Radhanapur & sanatalpur RWSS

Estimated Cost: Rs.

PRICE BID + Data Sheet+ Specification

Executive Engineer

Public Health Works Division

Gujarat Water Supply & Sewerage Board

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

VOLUME – III – PRICE BID

1.0 Extent of work

3.0 BID FORM (WITH PRICE)

5.0 BREAK UP FOR INTERIM PAYMENT

6.0 DATA SHEET FOR CIVIL STRUCTURE

7.0 Detailed Specification

Schedule – B - “Chlorine Safety equipments & Gravity feed type

gaseous chlorination Plant & Constructing

Chlorination Room At Various H.W.Site For

Radhanpur-Santlpur Group RWSS Tal : Radhanpur

/ Santalpur Dist : Patan ”

Specification Detailed Specification

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

GUJARAT WATER SUPPLY & SEWERAGE BOARD

(A WHOLLY OWNED GOVERNMENT OF GUJARAT UNDERTAKING)

Bid documents for “Chlorine Safety Equipments & Gravity feed type

gaseous chlorination Plant & Constructing Chlorination Room At

Various H.W.Site For Radhanpur-Santlpur Group RWSS Tal :

Radhanpur / Santalpur Dist : Patan”

Estimated Cost: Rs.

Executive Engineer

Public Health Works Division

Gujarat Water Supply & Sewerage Board

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

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VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

(1) Extent of Work

(2) Details of Proposed Scheme

(3) Special Attention

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

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VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

EXTENT OF WORKS

This is a single point responsibility contract comprising “ Chlorine Safety Equipments &

Gravity feed type gaseous chlorination Plant & Constructing Chlorination Room At Various

H.W. Site For Radhanpur-Santlpur Group RWSS Tal : Radhanpur / Santalpur Dist : Patan ”

The scope of work also includes post implementation operation and maintenance of the

constructed facilities under the package for a period of 5 (five) years.

The Scope of Work under this Contract includes the Design, Engineering, Manufacture,

Supply, Inspection and testing at works, Packing and forwarding, Delivery to site,

Unloading, Handling, Safe Storage, Insurance, Erection, Installation, Testing, Trial Run,

Commissioning and Demonstration of Performance Guarantee Parameters, handing over,

Training of Owner’s personnel, preparing “Operation & Maintenance Manual” and “As Built

drawings” of …………. as specified in different sections of this specification. The scope

broadly comprises the work specified in different sections of this Tender Specifications.

Any item of work, for erection of material / equipment which have not been specifically

mentioned in the specification but are necessary for safe and trouble-free operation and

guaranteed performance of the entire system, plant and equipment offered shall be

deemed to be included within scope of this specifications and shall be provided by the

bidder without any extra price and time implication to the employer.

The successful bidder shall have to undertake site surveys, route surveys for ascertaining

the terrain for planning and designing of the schemes in consultation with Engineer-in-

charge, as Structure as to conduct geotechnical investigations for designing of foundation

system of various structures. The bidders shall submit actual path of laying of transmission

network based on actual site condition and shall submit hydraulic design of transmission

network to Employer/Consultant for review/approval and thereafter as per approved

hydraulic design pipelines should be laid.

Civil, Mechanical, electrical & Instrumentation works shall include design, manufacture,

performance testing at manufacturer’s works, painting, supply, delivery at site, storage at

site, installation / erection, testing and commissioning at site, final painting and handing

over followed by Operation and maintenance for 5 years.

The scope of work shall also include obtaining necessary statutory approvals for the

components as required. The statutory approvals shall include but not limited to Load

Sanction from GEB/Load Release from GEB/ No Objection Certificates from Gujarat

Electricity Board (GEB) / Electrical Inspector / relevant government agencies /any other

statutory authority as applicable. The same shall be in the scope of contractor.

GWSSB will be responsible to get all other statutory permissions and clearances from the

concerned central / state or local statutory authorities. However, the contractor shall

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

have to manage the day-to-day co-ordination and follow up activities based on these

clearances on site.

In the work of construction of structures, if the following condition like ground situation,

SBC reports, type of strata encountered in foundation, natural rainfall drain patterns,

Ground water table of locations, etc. occurs and the engineer in charge feels the necessity

of consideration of ground water table, the structural design shall be incorporate

necessary water uplift pressure. The decision of engineer-in-charge shall be binding to the

bidder. Bidders are advised to quote the rate keeping in view this point as no extra

payment shall be given for this. In case of any ambiguity, the decision of Superintending

Engineer shall be final and binding to the bidder.

Before starting the actual work, the contractor has to provide and fix necessary DISPLAY

BOARDS at all works site as per design, details, including writing with paints necessary

details as directed by Engineer-in-charge at Contractor’s own cost. No extra payment shall

be made for this work. These shall be property of GWSSB / Client after completion of

2.0 DETAILS OF PROPOSED SCHEME

The scope of this package starts from:

The general arrangements given in the specification is indicative, the contractor to

develop detailed drawings to suit process level requirements, capacity specified in

specification and available plot area.

- Valve Chambers

- Anchorage/Thrust Blocks/Culvert/Nalla/Drain/River Crossing

Valve chambers:

Contractor shall carry out the construction of valves chambers in consultation

with the engineer in charge.

Anchor/Thrust Block

Anchor/thrust blocks shall be provided wherever necessary in consultation with

engineer in charge. Contractor shall carry out the design and submit the same for

review and approval before execution.

Chlorination Rooms, Pump Houses, Staff Quarter, Inspection Bungalow:

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

- The Scope includes detailed design, civil general arrangement drawings, structural

drawings (including reinforcement) / construction drawing so fall civil works for

Chlorination Rooms, building services, water supply, storm water drainage, sewerage, and

waste water system and detailed design and drawings of all mechanical, electrical and

instrumentation system and equipment on the basis of the approved design, layout and

general arrangement.

- The Chlorination Rooms shall be design so that Chlorination plant be easily install and

maintenance can be done easily.

Overall work to be executed under project is as listed below.

Sr. No. Description Quantity

MECHANICAL WORKS:

The scope includes design, engineering, supply, installation, testing and commissioning of

Suitable Pumping machinery as specified in the price-bid with required electrical &

mechanical accessories, including comprehensive operation & maintenance at various

pumping stations of clear & raw water included in the scope of the tender.

a) SITC of Suitable Pumping Machinery as specified in price-bid for 0 Different pumping

station for raw/clear water transmission.

b) The contractor must complete & furnish pump/ model study, Sump/ Intake

Structure model study and CFD Analysis before submission of drawings & documents.

c) Design & supply associated piping, Valves, instrumentation & accessories as

specified in price bid.

d) Installation, testing & commissioning of the above equipment & accessories.

e) Submission of data sheets, QAP, GA drawing, cross section drawing, layout

drawings of all equipment and to get approval of same.

f) For effective running of pumping machinery, operating staff is required to stay at

HW site; so necessary provision is to made at all HW site.

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

Summary of Pumping machinery at Village Level Sumps:

Sr. Name of Name of Discharge Capacity

Type of pump in

No Village Village/Hamlet in LPM in HP

Allocation of pumping machinery should be finalised by Engineer in charges as per Site

Situation and May Be allocated to other villages as per site requirement.

ELECTRICAL AND INSTRUMENTATION WORKS:

Scope of Work includes the Design, detailed engineering, preparation of construction

drawings, manufacture, acceptance testing and inspection at places of manufacturer,

painting, supply, packing, forwarding, and delivery to site including transit insurance,

storage at site, installation/erection, final painting, testing and commissioning of the

electrical & instrumentation equipment’s adhering to the standards, regulatory

requirements & best engineering practices.

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

1. Name of work “Chlorine Safety equipments & Gravity feed type gaseous

chlorination Plant & Constructing Chlorination Room At Various H.W.Site For

Radhanpur-Santlpur Group RWSS Tal : Radhanpur / Santalpur Dist : Patan”

2. The bidder shall quote his firm and fixed price for the entire work under this Contract,

defined in more details in various sections of this bid document.

3. The rates and prices shall be submitted in the electronic formats given by n-procure which

is called Schedule-B (Schedule B1, Schedule B2...., Schedule C), rates and prices received

in any other formats will be rejected and the Bids will be disqualified.

4. It will be entirely at the discretion of the Employer to accept or reject the bidder’s

proposal, without giving any reasons whatsoever and the bidder shall not be permitted to

withdraw his bid on this account.

supplied from the by client.

6. In Schedule-B the Bidder shall quote prices for the items on lump sum / unit rate as called

for against the BOQ item.

only will be considered for price evaluation & shall form a part of the Contract Agreement.

9. The Bidder shall quote his prices for Operation & Maintenance in Schedule-C. Bidder shall

give year wise break up of cost for 5 years O&M in Schedule-C/1 to Schedule-C/5

seperately for Schedule-C. The total shall be inline to the price quoted in Schedule-C. The

total shall be carried forward to Schedule-B for comparison and evaluation.

10. Wherever for a particular item the quantities have been specified payment shall be on unit

rate basis and unit variation in quantity will be paid with pro rata basis.

11. Each item is to be individually priced online and the amounts shall be added up to arrive at

except where the item description requires the item to be priced on "as applicable” basis.

The item shall not be priced if it is “not applicable” to the bidder’s design, in which case

the bidder shall add the words “NOT APPLICABLE”. The wording in the item description is

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

for subject matter guidance only; clause references are indicative only and all other

relevant clauses shall also be referred to. The prices shall allow for all the works covered

under the bid and all liabilities and contractual obligations whether separately specified or

not. Items against which no prices are quoted shall not be separately paid for and the

bidder shall be deemed to have covered the cost of execution of such items (according to

the requirements of the bid document) in the prices quoted for other items.

satisfactory working/safety of the system as specified, will not be separately paid for by

the Employer when executed and shall be deemed to be already covered by other items

and rates listed in the price sheets No extra payment shall be given for any item which is

required to complete and perform the project.

during the pendency of the Contract. In case of any discrepancy noted in the various price

schedules, those in Schedule B will be considered and binding on the Contractor. The prices

corrections if any will be considered for financial evaluation of the bid.

14. Schedule ‘D gives the basis of interim payment for construction of civil works.

15. The bidder shall be deemed to have allowed in his price for provision, maintenance and

final removal of all temporary works of whatsoever nature required for construction

including temporary bunds, diverting water, pumping, de-watering etc. for the proper

execution of works. The rates shall also be deemed to include any works and setting out

that may be required to be carried out for laying out of all the works involved.

16. Prices shall be filled online only.

Specifications and other sections of these bid documents and these documents are to be

taken as mutually explanatory of one another.

18. The bidder shall interpret the data furnished and carry out any additional survey work, or

investigation work required at his own cost.

19. The prices quoted shall also include the cost of materials utilized for testing.

20. The bidder should acquaint himself with the site conditions including the access to Work

site. The successful bidder shall have to make suitable access to work sites at his own cost.

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

These accesses will be used by the other contractors working for GWSSB.

shall include all the equipments / materials / accessories and services required as per the

22. The amount to be quoted for O & M / year shall be as per Volume-IB, General Conditions of

Contract, Clause No. 1, Security Deposit.

23. 1% of the value of work will be deducted from the Running bill against labour cess which is

24. Third Party Inspection / CSC agency will be deployed by GWSSB and charges of the same

will be borne by GWSSB.

25. Any expenditure incurred by inspection/ CSC agency for the work misinformed by the

contractor and charges of inspection/ CSC agency without any work due to misinformation

shall be recovered from the contractor.

26. The rates to be quoted by the Contractor must be exclusive of GST but inclusive of all

other taxes. GST should be paid extra on the admissible payment as per the approved

tender rates and condition of price variation; GST should be paid as per prevailing

rates at the time of payment. The TDS as per provision of IT rules and GWSSB policy.

27. The rates Should be quoted exclusive of GST but inclusive of all other taxes as per

Volume-I (B) General Condition of Contract, Clouse No.

28. The process requires that the bidder shall quote his price for the work components

during the entire period of performance of the contract except price variation allowed for

supply of MS/DI/PVC/HDPE pipe as per Volume-II(A), General Conditions of Contract.

29. Payment shall be made for the components for which lump sump prices are quoted, as per

the schedule of payment. Total cost will be worked out on the basis of work done of

individual items and rates quoted against those particular items only.

30. Royalties: The contractor shall be liable to pay the royalty of the quarried materials/

minerals used in the construction of works at the rates specified in the Narmada Water

Resources, Water Supply & Kalpsar Dept. Resolution No. GEN-2010-595- (6)- M.I.Cell ( K-1)

Dt. 29-4-2011 ( Gujarati Version Copy enclosed) and shall be recovered from the running

bills of the work from time to time and remaining amount if any shall be recovered from

the final bill before releasing the security deposit of the work. The contractor shall furnish

the statement showing the quantity of quarried materials / minerals from whom purchased

( with full address of the seller) and copies of the bills for purchase to the Executive

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

Engineer of the in charge of the work. The contractor shall also furnished such additional

information as regards royalty payment to the competent authority.

31. Agency shall have to take Insurance policy and intimate to GWSSB along with the evidence

within time limit. In case of noncompliance entire responsibility shall be rest with the

agency and required amount shall be recovered from any due amount of the agency.

32. GWSSB can recover penalty amount from the agency for not taking the insurance. Though

the penalty amount is recovered, responsibility of the agency for taking insurance shall be

continued and will not be escaped from the responsibility.

33. The contractor shall apply fair means of stock maintenance and shall adopt accounting

standard as may be prescribed under GST Act as applicable in the state of Gujarat. For

arriving at the difference in procurement prices due to introduction of GST it will be open

for the Board to ask for original invoices, lorry receipt, weigh bridge slips, payment details

and such other documents as may be required for the purpose.

The claim of contractor regarding GST shall have to be backed by documentary evidence

substantiating the actual payment of tax duly certified by the competent tax authority. The

final decision regarding the quantum of the claim amount to be recovered or reimbursed shall

be of the competent authority of the GWSSB and shall be binding on the contractor.

Signature of Contractor Executive Engineer

P.H. Works Division Radhanpur

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

2. BID FORM (WITH PRICE)

Bidders are required to fill up all the blank spaces in this Bid Form.

SUB: Chlorine Safety Equipments & Gravity feed type gaseous chlorination Plant &

Constructing Chlorination Room At Various H.W.Site For Radhanpur-Santlpur

Group RWSS Tal : Radhanpur / Santalpur Dist : Patan.

1. Having visited the site and examined the Bid Documents, Drawings, Conditions of Contract,

including Addenda / Amendments to the above, for the execution of the above Contract, we

the undersigned offer to Design, Engineer, Procure, Construct, Complete, Commission,

operate, maintain and Run the whole of the said works for 4 (Four) Months from the date of

commissioning including defects liability period as given in Conditions of Contract and in

conformity with the drawings, conditions of Contract, specifications, Preamble to Price

Nos.____________________(insert numbers) for Lump sum fixed price of

) for Construction including free trial run (If Applicable) for three months or such other sum as

may be ascertained in accordance with the conditions.

2. I / We agree that

(a) If we fail to provide required facilities to the Employer’s representative or any other person

/ Agency by the Employer to perform on his behalf for carrying out the inspection and

testing of materials and workmanship.

(b) If we incorporate into the Works, materials before they are tested and approved by the

Engineer’s representative

(c) If we fail to deliver pure water of required quantity according to the conditions / stipulations

of the Contract, the Engineer will be at liberty to take any action including termination of

Contract and impose at his absolute discretion any penalties, and / or reject the work.

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

3. We undertake, if our Bid is accepted, to complete and deliver the works in accordance with the

Contract with in ......... Months, inclusive of monsoons, from the date or receipt of Letter of

Acceptance issued to us by you.

4. We agree to abide by this Bid for a period of 180 days from the last date of submission of bid

and it shall remain binding upon us and may be accepted at any time before the expiry of that

5. In the event of our Bid being accepted, we agree to enter into a formal Contract Agreement

with you incorporating the conditions of Contract thereto annexed but until such agreement is

prepared this Bid together with your written acceptance thereof shall constitute a binding

Contract between us.

6. We agree, if our Bid is accepted, to furnish performance Security in the forms and of value

specified in the Clause 1 of Volume-IB, General Conditions of Contract.

7. We have independently considered the amounts of liquidated damages shown in Appendix to

Bid and agree that they represent a fair estimate of the damages likely to be suffered by you in

the event of the work not being completed by us in time.

8. We understand that you are not bound to accept the lowest or any bid you may receive.

(Name of the person)

(In the capacity of)

Duly authorized to sign Bid for and on behalf of (Fill in block capitals)

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

Name Of Work :-Chlorine Safety Equipments & vacuum control type gaseous

chlorination Plant. At Various Headworks Ta. Radhanpur / Santalpur Dist. Patan Under

M & R to Radhanpur-Santalpur Group RWSS

(M and R Programme 2026-27)

Sr. Rate at Which the Place of

materials will be charged to the

No Particulars Quantity Unit

Agency Delivery

The Contractor submitting the tender should see that the rate in Schedule - A (of tender

documents) are filled by the Engineer in charge prior of the time of issue of tender.

Any additional materials to be supplied free of cost as per Schedule-A if found necessary at

the time of execution will be supplied to the contractor free of cost

Any materials other than that provided in Schedule-A if required for the labour items of

3 Schedule-B issued on request to the contractor provided the same are available with

department at prevailing market rate or department issue rate whichever is higher.

The contractor shall provide his own arrangement at his own cost for loading, unloading and

transport to the site of work for the material stipulated in Schedule-A.

Those works will be executed which are found necessary at the time of execution, contractor

will not be entitle for any claim for saving in any items as per site condition.

The rate of recovery for short fall or damage of material issued free of cost will be present

S.O.R. plus 3% storage charge or rates of Board R/C Plus 3 % storage whichever is higher.

7 No negotiation at present in from and hence contractor should quote their rates accordingly.

8 The sub contract, if any given by the contractor would not create any right against the Board.

The Amount Recoverable from the contractor by the Gujarat water supply and sewerage board

9 on any account shall be liable to be recovered from the amount payable to the contractor /

After passing the bill fund shall be demanded to higher authority payment shall be made after

getting fund from higher authority.

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

Labour Cess under the prevailing rules of the Government Resolution shall be borne by the

bidder. (Present rate is 1%).

Royalty on Minerals Consumed in works from End User under the prevailing rules of the

12 Government Resolution (No.GJ/2016/MCR-102013-3289 Dtd.18/06/2016) shall be borne by

Date & Signature of Contractor

Deputy Executive Engineer Executive Engineer

Public Health Sani. Sub

Public Health Works Division

Radhanpur Radhanpur

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

Name Of Work :-Chlorine Safety Equipments & vacuum control type gaseous chlorination Plant. At Various

Headworks Ta. Radhanpur / Santalpur Dist. Patan Under M & R to Radhanpur-Santalpur Group RWSS

Item No. ITEM DESCRIPTION Qty Unit Rate Amount

Designing (aesthetically) and constructing R.C.C frame

structure of pump room with positive suction / Negative

Without Gantry structure (Upto 3.60 M)

1. Minimum 15 % opening for ventilation should be

2. Pump room rolling shutter, door and windows of 138.00 sq.mt. 10624.82

aluminium section and window grill of iron should be

provided (Included in Cost).

3. Plinth level of Pump house should be min.1 meter

4.Cost does not include foundation for pumping

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

2 Chlorination Plant:

Providing, installing & commissioning Chlorination plant as per

design capacity with

Gravity feed type chlorinator 34.00 Set 33850.00

5 Kg / hr capacity

3 Providing, Supplying & Safety Kit for 100 Kg Capacity Tonner

4 Providing, Supplying & Safety Kit for 900 Kg Capacity Tonner 2.00 No. 46191.00

5 Providing, Supplying Digital Chlorine Detector Monitor meter-

to 20 ppm Capacity 15.00 No. 62551.00

6 Laboratory Instruments

Chloroscope 0.5 ppm including testing materials. 4.00 No. 1443.00

7 Laboratory Instruments

Chloroscope 0.2 ppm including testing materials. 15.00 No. 866.00

8 U PVC SCH40 for cold water 25 mm dia (1)"

9 Excavation for pipe line trenches for water supply, sewerage

line, manhole etc all with shoring and struting if required as per

required gradient and line including safety provisions using site

rails and stacking excavated stuff including up to all required

lead cleaning the site etc Complete for all lifts and strata as

(a) In all sorts of soil and soft murrum

10 Refilling the pipeline trenches incl. ramming, watering,

consolidating desposal of surplus stuff as directed within a 427.03 Cum 22.55

radius of 3 km.

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

11 Supply of Chlorine Cylinders (Empty)

Providing and Supply of Chlorine cylinders Empty of required

capaciry with necessary explosive certificates includino all 2.00 No. 62551.00

(A) 900 Kg Capacity

(B) 100 Kg Capacity 30.00 No. 26945.00

12 Refilling of Chlorine gas in cylinder including transportation to

and from factory and back 2.00 No. 7737.00

(A) 900 Kg Capacity

(B) 100 Kg Capacity 2.00 No. 1741.00

I / We, am / are willing of carry out the work ........................ % above / below %................ age (Percentage

should be writing in figure and word below above at the tender rate mentioned above amount my / our tender workas

1. Estimated cost put to tender 1. Estimated cost put to tender

2. Tender Cost. 2. Tender Cost.

3. Below Rs…………% below 3. Above Rs……………. % above

5. In word Rs…………………………. 5. In word Rs………………………

Executive Engineer

Signature of Contractor P.H. Work Division

VOLUME: III Price Bid, Specification Chlorine plant RAS RWSS

Volume-III: Price Bid Daisar Sump

BREAK UP FOR INTERIM PAYMENTS

Percentage Payment to

Item Description of Items

1 PUMPING STATION / STAFF QUARTERS /

MATERIAL SAFETY ROOM / PUMP ROOM

a. On approval of Designs 2.0 % of Quoted rate

b. On completion of Excavation & base slab 18.0 % of Quoted rate

c. On completion of vertical wall up to plinth 20.0 % of Quoted rate

d. Full supporting structure incl. ring beam and top 15.0 % of Quoted rate

e. On completion of pump house incl. fixing doors 10.0 % of Quoted rate

f. Plastering inside & outside with epoxy paint etc 10.0 % of Quoted rate

(completed with all respects)

g. Painting of letters, MS ladder pipe, railing and all 15 % of Quoted rate

miscellaneous items such as snowcem paints in

three coats etc. (completed with all respects)

h. After Completion 10 % of Quoted rate

3 Miscellaneous work

A All other items such as encasing, columns 80% of quoted rate on

support for culvert, pipe bridges for Canal completion of works

/Drain/Khadi crossing, internal roads,

railway/highway crossing, Anchor/thrust blocks,

steel bridge for pipe crossing, Construction of

Compound Wall & Repairing and Renovation

B On commissioning of the system 20% of quoted rate

Volume-III: Price Bid Daisar Sump

BREAK UP FOR INTERIM PAYMENTS

(CIVIL, MECHANICAL, INSTRUMENTATION & ELECTRICALWORKS)

Percentage Payment to

Item Description of Items

a On receipt of materials at project site 65 % of Quoted rate

b On Excavation, Lowering, laying and Jointing 20 % of Quoted rate

c On Hydraulic testing 5 % of Quoted rate

d On refilling and disposal of surplus stuff 5 % of Quoted rate

e After commissioning 5 % of Quoted rate

a On receipt of materials on site 70 % of Quoted rate

b On erection 20 % of Quoted rate

c On Hydraulic testing 5 % of Quoted rate

d After commissioning 5 % of Quoted rate

3 PUMPING STATION / STAFF QUARTERS

/STORE ROOM / MATERIAL SAFETY ROOM /

a. On approval of Designs 2.0 % of Quoted rate

b. On completion of Excavation & base slab 18.0 % of Quoted rate

c. On completion of vertical wall up to plinth 20.0 % of Quoted rate

d. Full supporting structure incl. ring beam and top 15.0 % of Quoted rate

e. On completion of pump house incl. fixing doors 10.0 % of Quoted rate

f. Plastering inside & outside with epoxy paint etc 10.0 % of Quoted rate

(completed with all respects)

g. Painting of letters, MS ladder pipe, railing and all 15 % of Quoted rate

miscellaneous items such as snowcem paints in

three coats etc. (completed with all respects)

h. After Completion 10 % of Quoted rate

Volume-III: Price Bid Daisar Sump

GUJARAT WATER SUPPLY & SEWERAGE BOARD

(A WHOLLY OWNED GOVERNMENT OF GUJARAT UNDERTAKING)

Bid documents for “Chlorine Safety equipments & Gravity feed type

gaseous chlorination Plant & Constructing Chlorination Room At

H.W.Site For Radhanpur-Santlpur Group RWSS Tal : Radhanpur

/ Santalpur Dist : Patan”

Estimated Cost: Rs.

Technical Data Sheets Civil Works

Executive Engineer

Public Health Works Division

Gujarat Water Supply & Sewerage Board

Volume-III: Price Bid Daisar Sump

VOLUME – III – B – Technical Data Sheets Civil Works

6.0 Technical Data Sheets Civil Works

Schedule - Technical Data Sheets Civil Works

Volume-III: Price Bid Daisar Sump

THIS PAGE IS LEFT INTENTIONALLY BLANK.

Volume-III: Price Bid Daisar Sump

DATA SHEET FOR PUMP HOUSE/ CHLORINE ROOM

Sr. No. DETAILS DATA for Chlorination House

Location/ Size (tentative)/

1 Carpet area of the Pump As Per Attached Table

2 Plinth level of Pump house Avg. G.L. + 1.0 Mt. Ht.

Height of Pump House above

3 Plinth level to Bottom beam 3.0 Mt. (Plinth level to top slab beam Bottom)

Live Load on the Pump Floor

4 As Per BIS code.

Level (kg/ sqm.)

Live load for non accessible

5 As Per BIS code.

pump house roof (kg/sqm)

Material handling

6 As per electro – Mechanical requirement.

7 Flooring Polish kota stone 25 mm thick

All Window shall be of alluminium sliding section

8 Window also provided with MS grill and 2*2 inch

alluminium jali.

9 Doors Entry door should be 1.2 meter wide.

10 Type of structure RCC frame work with brick masonry

15 mm thick CM 1:3 with water proofing

11 Inside Plaster

20 mm thick sand faced cement plaster

(Gutaka), 12 mm thick backing coat of CM 1:3 (1

12 Outside plaster

cement: 3 sand) and 8 mm thick finishing coat of

CM 1:1 (1 cement: 1 sand)

Approved 2 Coat Asian Weather Proof Paint with

Primer should be applied. (Asian Make –

Combination of Burnt Yellowstone N-4120 &

13 Colour Crushed Ice L-140 shade must be used)) &

Internal – Distemper of approved brand and

quality, Painting two coat with Priming coat on

Volume-III: Price Bid Daisar Sump

Terrace shall be finished with high quality water

15 terrace Flooring proofing like china mosaic flooring with proper

slope and drainage for rain water

02 No. LED Tube light, 1.0 No Fan, 01 No.Out

16 Electrification Side LED Flood Light for internal as per

17 Grade of Concrete RCC –M25

18 Steel TMT Steel Fe-415/500 Confirming to Relevant IS

All other Requirement as per Price bid &

specifications Including all obligatory

requirement of department. With water proofing

20 Other Requirement

Treatment, insecticide pest control treatment to

floor, All railing should be SS railing (SS 304) as

per latest IS standard & as per EIC.

21 Seismic Zone IV

Supply, installation, testing, and commissioning

of medium-duty, wall-mounted exhaust fan (IS

2312 compliant). Motor shall be TEFC induction

22 Exhaust Fan type, continuous duty, operating at 230 V/ 415 V

± 10%, 50 Hz, with Class F insulation, IP-55

protection, integrated thermal overload

protection, and pre-lubricated ball bearings.

S SIGNATURE OF CONTRACTOR EXECUTIVE ENGINEER

Volume-III: Price Bid Daisar Sump

GUJARAT WATER SUPPLY & SEWERAGE BOARD

(A WHOLLY OWNED GOVERNMENT OF GUJARAT UNDERTAKING)

Bid documents for “Chlorine Safety equipments & Gravity feed type

gaseous chlorination Plant & Constructing Chlorination Room At

H.W.Site For Radhanpur-Santlpur Group RWSS Tal : Radhanpur

/ Santalpur Dist : Patan”

Estimated Cost: Rs.

Detailed Specification

Executive Engineer

Public Health Works Division

Gujarat Water Supply & Sewerage Board

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VOLUME – III – B – Detailed specification

7.0 Detailed specification

Schedule - Detailed Specification

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NAME OF WORK: Chlorine Safety equipments & Gravity feed type gaseous chlorination

Plant & Constructing Chlorination Room At H.W.Site For Radhanpur-Santlpur Group

RWSS Tal : Radhanpur / Santalpur Dist : Patan.

Designing (aesthetically) and constructing R.C.C frame structure of pump room with

positive suction / Negative suction

Without Gantry structure (Upto 3.60 M)

1. Minimum 15 % opening for ventilation should be provided.

2. Pump room rolling shutter, door and windows of aluminium section and window

grill of iron should be provided (Included in Cost).

3. Plinth level of Pump house should be min.1 meter above GL.

4.Cost does not include foundation for pumping machinery.

Ancillary works such as site grading, site drainage; fencing and gates for outdoor substation etc. as

described under specifications for Civil & Building Works shall be undertaken.

Design Requirements:

The following are the design requirements for all reinforced or plain concrete structures:

a) All binding and leveling concrete shall be a minimum 100 mm thick in concrete grade M15 or

in concrete mix 1:2:4 to be used.

b) All structural reinforced concrete for water retaining structures shall be of a minimum M30

grade with a maximum 40 mm aggregate size for footings and base slabs of thickness more than

450mm and with a maximum 20 mm aggregate size for all other structural members. For non water

retaining structures the concrete shall be of M 25 grade with a maximum 20 mm aggregate size. The

water retaining structures shall have to be designed as per IS: 3370 (Part I-IV).

c) The reinforced concrete for water retaining structures shall have minimum cement content

d) The reinforcement to be used shall be TMT reinforcement of grade Fe-415 of reputed make,

conforming to IS:

e) The minimum reinforcement for water retaining structures in each direction should be as per

IS 3370. The minimum clear cover to all reinforcement including stirrups and links shall be 40 mm for

Volume-III: Price Bid Daisar Sump

all water retaining structures.

f) The minimum size main reinforcement bar shall be

g) 12mm in case of columns and beams,

h) 10mm in case of walls,

i) 8mm in case of slabs.

j) The minimum size of secondary reinforcement shall be 8mm

k) All buildings shall have a minimum 1 meter wide, 100 mm thick plinth protection paving in

M15 grade concrete or stone slabs/tiles. All plinth protection shall be supported on well compacted

l) Any structure or pipeline crossing below roads shall be designed for Class A of IRC loading.

m) The bridges & bridge supporting structures shall be designed to safely withstand the loading.

n) All pipes & conduits laid below the structural plinth & road works shall be embedded in

reinforced concrete of grade M15 of minimum thickness 150 mm.

o) Approved quality water proofing compound (chloride free) shall be added during concreting

of all liquid containing structure in the proportions specified by manufacturer or 2 % by weight of

cement whichever is higher.

p) The wall and floor panels shall be poured in sequential order with a minimum time gap of

q) Flooring should be vitrified tiles first quality.

The following minimum thickness shall be used for different reinforced concrete members,

irrespective of design thickness:

(i) Walls for liquid retaining structures : 250 mm

(ii) Roof slabs for liquid retaining structure : 150 mm

(other than flat slabs)

(iii) Bottom slabs for liquid retaining structure : 200 mm

(iv) Floor slabs including roof slabs, walkways,

canopy slabs : 100 mm

(v) Walls of cables / pipe trenches,

underground pits etc. : 125 mm

(vi) Column footings : 300 mm

(vii) Parapets, chajja : 100 mm

(viii) Precast trench cover : 75 mm

Construction Requirement

Pump house structures shall be constructed in M25 grade concrete respectively and reinforcement

steel shall be of TMT Fe 415 grade.

The general specification of cement, sand, brick, metal, water, mixing, placing and curing, plastering

and color work etc shall be as per general specifications laid down in this contract.

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Pump house should be painted with weather proof paint after construction.

The detailed specification of the work shall be as per item wise specifications of building/civil works

attached to this volume.

The data sheet details shall be used for designing the pump house.

The design/drawings of pump house shall be got approved by the engineer in charge & design cell of

GWSSB before execution of work.

All Window shall be of alluminium sliding section also provided with MS grill and 2*2 inch alluminium

The construction of pump room shall be carried out as per direction/instruction of engineer in charge.

Mode of measurement and payments

The measurement shall be taken per Pump Room Design & constructed on site as per dept.

requirement/data sheet. The measurement shall be per square meter basis.

Mode of Measurement & Payment:

The payment shall be made on sq.mt. as per Schedule-B.

Chlorination Plant:

Providing, installing & commissioning Chlorination plant as per design capacity with

Gravity feed type chlorinator

5 Kg / hr capacity

The conceptual design based on raw water characteristics adopts the following rates of dosing :

Post chlorination : 3 mg/l maximum

Gravity feed type : 2 mg/l average.

The contractors shall supply the chlorinators of the capacities shown below, based on the rates of

dosing set out herein.

Post chlorination : Gravity feed type.

Proposed system : Chlorination plants 5 kg/hr capacity including piping, valves etc comp.

chlorinators of requirement and types set out shall have the following facilities.

(a) Manual adjustment of dose rate.

(b) Substantially liner scale.

(c) Internal gas inlet pressure reducing valve.

(d) Safely vent to be pipes to external atmosphere.

(e) Pressure / Vacuum relief valve.

The chlorinator shall be arranged in a separate moisture proof chlorine room. The chlorine room shall

be accommodated in connection with chlorine drum storage on the ground floor of chemical house

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and arranged for a separate access from outside of the chemical house. The contractor shall provide

an air-tight glazed partition or window in the chlorinator room to enable the staff to inspect the dose

rates without entering the room.

Adequate externally switched lighting shall be provided and detailed by the contractor on his

Apart from the chlorinators no other equipment shall be accommodated in the chlorine room. Door-

ways to the room shall be shown as outward opening and preferably to the building exterior.

CHLORINE GAS PIPE WORK VALVES AND PRESSURE GAUGES :

The contractor shall include suitable pressure reducing valves to limit the pressure delivered to

The standards required for the pipes and fittings shall be :

i) Pipe work chlorine gas shall be mild steel seamless to B.S. 3602 C.D.S or H.F.S or

electrical resistance welded pipe to B.S.3602.

ii) Pipe couplings shall be with British standard H flanges (Front and back welded) using ring

joints tagged, made of 1/16 thickness compressed asbestos fibre (CAF BS 2815 Grade-B).

iii) Valves shall be of the globe type with forged steel bodies monel metal spindles and valve

heads with malleable cast iron valve seats Glad packing shall be of Teflon.

OPERATING WATER :

The contractor shall draw his water supplies from the back wash water tank and need not provide any

facility for feeding the chlorinators from other source.

Dosing line shall be provided for post chlorination points for the proposed system.

DOSING POINTS :

The exact dosing points for post in chlorination are as below :

Post chlorination proposed sys. : Pure water channel in the filter house.

For Pre Chlorination Plant

Pressure feed type chlorinator with injector booster etc. complete.

5 Kg / hr capacity

This specification covers design, manufacture, inspection, testing, supply, erection and

commissioning (including supervision of erection and commissioning) of Wall mounted gas

chlorinator. It is not the intent to specify completely all details of design, construction, etc. of the

equipment. However, equipment shall conform in all respects to high standards of engineering, design

and workmanship.

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2 CODES AND STANDARDS:

The chlorination equipment and accessories shall comply, wherever applicable, with the current

codes / standards of Indian Standards, Hydraulic Institute Standards- USA, American Society of

Testing Materials, ASME and SA power test code and Recommendations of chlorine institute.

3 GENERAL DESCRIPTION OF THE CHLORINATION SYSTEM:

It is proposed to introduce gas chlorinator of capacity up to 25 Kg/Hr for sea water system treatment.

Two tonners will be connected to gas header for achieving the gas chlorine capacity up to 2 Kg/hr &

This wall mounted chlorinator shall take the gas input from the existing line and deliver chlorinated

water at outlet of injector. The injector outlet is connected to our existing dosing line flange.

The wall mounted chlorinator is vacuum operated, solution feed devices are wall mounted remote

vacuum regulator/Auto vacuum regulator. The injector is floor mounted, away from the Chlorinator

which houses a Rota meter, a flow control valve, a differential regulator (optional) and a vacuum relief

valve. Feed range is 20:1 for any flow meter. The flow meter has an accuracy of ± 4% of the indicated

flow. The float and packing are made of PTFE.

The system is provided with a check valve, vacuum relief valve, and emergency drain relief valve.

Water passes through the injector to produce vacuum. This vacuum opens the check valve and

extends the vacuum up to the remote vacuum regulator. The chlorine supply under pressure is

reduced to a constant vacuum at the remote vacuum regulator. The gas under vacuum is controlled at

the gas flow meter and flow control valve to differential regulator which maintains a constant vacuum

differential. The chlorine solution is then discharged from the injector to the point of application.

Exclusively designed remote/auto vacuum regulator is a vacuum-to-open and normally closed. It

continuously monitors vacuum and regulates gas flow to a closely controlled value. When located as

close as possible to the source of gas supply, the risk of handling gas under pressure is reduced to a

minimum. Injectors are designed to create required vacuum and to limit chlorine solution strength to

3500 ppm at 25 c or 2500 ppm at 40 c.

The power water for injector shall be supplied by MAPS with existing setup

The details of power water available;

Power water : filtered sea water

Flow : 75 M3/Hr.

Head available: 32meters of WC.

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Note: - The existing inlet and outlet of the injector is 1” (25 mm) flange confirming to BS 10 table D.

The supplied injector should be mounted on these flanges. The Power water isolating valve will be

provided by MAPS.

4. EQUIPMENT TO BE FURNISHED BY THE SUPPLIER:

The WALL mounted chlorinator shall comprise of the following parts as minimum requirements.

Sr.No DESCRIPTION QTY

1 MOUNTING FRAME/SKID FOR GAS CHLORINATOR

ASSEMBLY. 1 SET

2 M.S. BALL VALVE (CHLORINE MANUAL ISOLATING VALVE). 1 NO

3 CHLORINE GAS FILITER 1 NO

4 CHLORINE GAS PRESSURE REDUCING VALVE(CPRV) 1 NO

5 REMOTE/AUTO VACUUM REGULATOR 1 NO

6 PRESSURE RELIEF VALVE 1 NO

7 ROTA METER 1 NO

8 FLOW CONTROL VALVE 1 NO

9 VACUUM RELIEF VALVE 1 NO

10 EMERGENCY DRAIN RELIEF VALVE 1 NO

11 CIRL DIAPHRAGM VALVE 1 NO

12 REQUIRED FITTINGS/ FLANGES/GASKETS/FASTENERS 1 SET

13 INTER CONNECTING VACUUN PIPING/FITTINGS 1SET

14 REQUIRED CHLORINE GAS LINE 1SET

15 INJECTOR ASSEMBLY WITH REQUIRED PIPE SPOOL

FOR CONNECTING ON THE EXISTING FLANGES OF 1SET

POWER WATER SUPPLY AND DOSING LINE.

16 CHECK VALVE 2 NO

17 VACUUM GAUGE VACUUM LINE 1 NO

18 CHLORINE GAS PRESSURE GAUGE 2 NO

19 DIFFERENTIAL PRESSURE REGULATOR (OPTIONAL IF 1 NO

REQUIRED FOR CAPACITY UP TO 2KG/HR & 1KG/HR.)

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20 MANIFOLD VALVE ( FOR CONNECTING THE COPPER 6 NO

TUBE FROM THE CYLINDER)

21 COPPER TUBE WITH CONNECTORS FOR CONNECTING 4 SET

CYLINDER AND MANIFOLD VALVE, OF 2MTS LENGTHS WITH

REQUIRED GASKETS.

SERVICES TO BE FURNISHED BY THE SUPPLIER:

The perspective firm shall visit the site for erection and commissioning of the chlorinator. The exact

requirement pipes and fittings depend upon the site condition. The chlorinator shall be erected and

commissioned at MAPS chlorination plant. The supplier is responsible for satisfactory injection of the

chlorine gas capacity up to 2Kg/hr & 1Kg/hr without any leak of chlorine gas / defect in the system.

6 WARRANTY PERIOD:

After successful commissioning of the chlorinator, the equipments /arts shall perform for the period of

one year from the date of hand over. Any defect arising during the warranty period, the supplier shall

visit the site; take necessary action for replacement of parts/equipments at free of cost within in the

shortest time possible.

7 DELIVERY PERIOD:

Delivery of materials, erection, commissioning and testing shall be done within 30 days from receipt of

Mode of Measurement & Payment:

The payment shall be made on Set as per Schedule-B.

Providing, Supplying & Safety Kit for 100 Kg Capacity Tonner

PACKING AND LABELLING

The packing, labelling, handling, and transportation of chlorine gas, when contained in a metal

container in a compressed or liquefied state is governed by the Gas Cylinder Rules,

Hydraulic Test—No cylinder should be filled with chlorine gas unless such cylinder has been,

subjected by the person filling it to the hydraulic test specified in Schedule I of the Gas Cylinder

Rules, 2004, within the preceding 2 years and has passed that test. Any cylinder which fails to pass

Volume-III: Price Bid Daisar Sump

the hydraulic test or which for any other reason is found to be unsafe for use should be destroyed or

rendered useless by cutting holes in it.

Examination Prior to Filling of Cylinder—Every cylinder should be completely emptied, thoroughly

cleaned and dried, before it is passed for filling. It should also be examined externally and so far, as

practicable internally, for surface defects, corrosion and foreign matter.

Filling Ratios and Working Pressure—Cylinders should not be filled with liquid chlorine in excess of

the filling ratio of 1: 19 as specified in Schedule II. of Gas Cylinder Rules,

The working or internal pressure in the cylinder charged with chlorine should not exceed 19.9 kg/cm2

gauge in tropical climates at a maximum of 65°C.

printed in the lower half of the label:

Warning! CHLORINE!

1. Do not change the colour of this cylinder.

2. This cylinder may not be filled with any gas other than chlorine.

3. This cylinder should be kept cool. It should not be placed near a stove or any other source of

heat, nor be exposed to the sun.

4. No oil or similar lubricant should be used on the valves or other fittings of this cylinder.

5. This cylinder should not be stored with any inflammable or explosive material.

GENERAL PREVENTIVE MEASURES

The fundamental steps for safe working conditions in a plant or area where chlorine is produced,

stored or processed are:

a. designing of layout of area with due consideration for adequate natural or mechanical

b. use of properly selected material for construction of plant and equipment for handling of

c. preventive maintenance of all equipment in proper working condition, and

d. availability and use of adequate and suitable personal protective equipment at all times.

Employee Selection and Training

Employee Selection—Chlorine is particularly irritating to persons afflicted with asthma, certain types

of bronchitis, other chronic lung conditions, and irritations of the upper respiratory tract; such persons

should not be employed where exposures to chlorine gas might occur. Pre-placement medical

examination including a chest X-ray is recommended for all new entrants and follow-up medical

examinations at suitable intervals for all workers handling chlorine.

Employee Training—Training classes for both new and old employees should be conducted

periodically to keep them conscious and informed of the hazards. There should be periodic drill and

instruction regarding location, purpose and use of personal protective equipment, safety showers, eye

fountains, first aid kits, etc. They should be cautioned to prevent leaks, avoid inhalation of gas and

Volume-III: Price Bid Daisar Sump

direct contact with the liquid. They, should be told to report to proper authorities immediately in case

of an equipmen failure.

All workers should be instructed and trained to adopt preventive measures in case of emergency.

Such training should include knowledge of emergency, firefighting equipment, fire alarms, crash shut-

down procedures for valves and switches, steps to be taken before starting repairs anywhere in the

plant, use of personal protective equipment and first-aid. Regular and surprise drills for the above

should be conducted to improve further the training in preventive and emergency aspects.

Eye protection devices should always be worn in a chemical plant. If there is danger of contact with

liquid chlorine, it is essential to wear a gas mask with a full facepiece.

Respiratory Protection

A suitable gas mask should be available to every employee involved with chlorine handling.

Respiratory protective equipment should be carefully maintained and kept in clean, dry, light-proof

cabinets properly protected by paraffined paper or polyethylene bags. Cleaning and inspection by

competent person is generally necessary after each occasion on which the apparatus is used and

should, in any case, take place at least once a month. Equipment used by more than one person

should be sterilized after each use. A defective or. inoperable mask is worse than none at all.

So far as it is possible and consistent with efficient protection and use, the protective equipment

should be comfortable to work with.

No person wearing a respirator should enter a chlorine contaminated area unless attended to by an

observer who can rescue him in the event of respirator failure or other emergencies.

Respiratory Protective Devices—have moulded flexible face pieces with transparent windows which

vary in size and shape. Eye protection is imperative due to the irritating nature of moist chlorine gas or

liquid chlorine splashes. Provision for exhaust air is accomplished by various types of valving devices

which remain tightly closed during the intake cycle of breathing. Connections between the face piece

and other parts of the apparatus utilize a flexible tube, which permits free head movement. This tubing

shall be visually inspected and tested for performance at frequent intervals. If leaks in the face piece,

tube, or tube connections cannot be eliminated by tightening the head straps, the complete face piece

and attached flexible tube shall be replaced.

It is equipped with a cylinder of respirable air carried on the body, and is suitable for high

concentrations of chlorine in an oxygen-deficient atmosphere and is preferred means of respiratory

protection. Such apparatus operates for a specified length of time.

Industrial Canister-Type Masks—It is equipped with a chlorine or all-purpose canister and is suitable

for moderate concentrations of chlorine,

provided sufficient oxygen is present. The mask should be used for a relatively short exposure period

only. It may not be suitable for use in an emergency. For example, the rupture of a chlorine container

Volume-III: Price Bid Daisar Sump

coincident with oxygen-consuming fire would clearly indicate the use of a self-contained or supplied-

air protective device, since, at that time, the actual chlorine concentration may exceed the safe 1-

percent limit and the oxygen content may be less than 16 percent by volume. Under this condition

suffocation is likely to result.

The canister removes contaminants during inhalation but does not supply oxygen. The wearer must

leave the contaminated area immediately on detecting the odour of chlorine or on experiencing

dizziness or difficulty in breathing; these are indications that the mask is not functioning properly, that

the chlorine concentration is too high, or that sufficient oxygen is not available.

Unless the presence of other gases requires the use of an all-purpose canister, the chlorine canister

should be used. The service life of a canister depends on the size of the unit, the chlorine

concentration and humidity of the atmosphere to which it is exposed, and the rate of breathing. It

usually varies from 15 minutes or less at high concentration up to several hours at very low

concentrations. Canisters installed in the mask proper with seals broken to render the unit

immediately available, do not retain their chlorine-absorptive capacity and shall be replaced

immediately after use or within 1 year in any case.

Spare canisters should be stored in a cool, dry, accessible place, with seals intact, and dated so that

rotation of new supplies is possible.

Exceeding manufacturers recommended limits on maximum non-use shelf life might be hazardous.

Regular replacement of over-age canisters, even though unused, is recommended. Canisters should

be periodically checked for their efficiency.

Positive Pressure (Blower) Hose Mask—It is equipped with air supplied through a hose from a remote

blower and is suitable for high concentrations of chlorine provided conditions will permit safe escape if

the air supply fails. This device is suitable in any atmosphere, regardless of the degree of

contamination or oxygen deficiency, provided that clean, breathable air can be reached. This device is

of the continuous flow type.

Demand-Type Hose Mask—It supplies air to the facepiece (at a rate governed by breathing) of the

user only when he inhales. Air supply for this device may be full-sized compressed air ^cylinders or a

compressor. As for continuous flow type units, the air supply must be suitable for respiration.

Combination units are available which consist of a self-contained demand air unit with a reinforced,

high-pressure hose through which air is supplied to the demand regulator from remote air cylinders or

a compressor. In the event that escape is not possible through the path of entry, the air hose

may be disconnected and escape made using air supplied by the demand air unit on the user’s back.

The information given above should be abstracted, and put into a form which is not only suitable for

instant use in the event of emergency, but which may also be used as the basis for first-aid drill.

Regular rehearsals, which include the entire testing procedure and wearing of the equipment, will help

to save the life of an employee faced with an emergency.

Prevention From Long-Term Effects—The danger from long-term effects may be minimized by

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maintaining careful medical supervision of those exposed to the hazard, removing from contact

anyone who shows early symptoms of being affected, and by excluding anyone who may be expected

to show undue sensitivity by reason of existing bodily defect or disease.

Containers, piping and equipment should be checked for leaks daily. If a leak is detected it should be

reported and immediate steps taken to correct the conditions.

EMERGENCY MEASURES

Wherever chlorine is handled a potential risk is involved and a serious, emergency might suddenly

and unexpectedly occur. Emergency situations should be anticipated, plans established and persons

trained to counteract them.

Mode of Measurement & Payment:

The payment shall be made on Number as per Schedule-B.

Providing, Supplying & Safety Kit for 900 Kg Capacity Tonner

PACKING AND LABELLING

The packing, labelling, handling, and transportation of chlorine gas, when contained in a metal

container in a compressed or liquefied state is governed by the Gas Cylinder Rules,

Hydraulic Test—No cylinder should be filled with chlorine gas unless such cylinder has been,

subjected by the person filling it to the hydraulic test specified in Schedule I of the Gas Cylinder

Rules, 2004, within the preceding 2 years and has passed that test. Any cylinder which fails to pass

the hydraulic test or which for any other reason is found to be unsafe for use should be destroyed or

rendered useless by cutting holes in it.

Examination Prior to Filling of Cylinder—Every cylinder should be completely emptied, thoroughly

cleaned and dried, before it is passed for filling. It should also be examined externally and so far, as

practicable internally, for surface defects, corrosion and foreign matter.

Filling Ratios and Working Pressure—Cylinders should not be filled with liquid chlorine in excess of

the filling ratio of 1: 19 as specified in Schedule II. of Gas Cylinder Rules,

The working or internal pressure in the cylinder charged with chlorine should not exceed 19.9 kg/cm2

gauge in tropical climates at a maximum of 65°C.

printed in the lower half of the label:

Warning! CHLORINE!

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6. Do not change the colour of this cylinder.

7. This cylinder may not be filled with any gas other than chlorine.

8. This cylinder should be kept cool. It should not be placed near a stove or any other source of

heat, nor be exposed to the sun.

9. No oil or similar lubricant should be used on the valves or other fittings of this cylinder.

10. This cylinder should not be stored with any inflammable or explosive material.

GENERAL PREVENTIVE MEASURES

The fundamental steps for safe working conditions in a plant or area where chlorine is produced,

stored or processed are:

e. designing of layout of area with due consideration for adequate natural or mechanical

f. use of properly selected material for construction of plant and equipment for handling of

g. preventive maintenance of all equipment in proper working condition, and

h. availability and use of adequate and suitable personal protective equipment at all times.

Employee Selection and Training

Employee Selection—Chlorine is particularly irritating to persons afflicted with asthma, certain types

of bronchitis, other chronic lung conditions, and irritations of the upper respiratory tract; such persons

should not be employed where exposures to chlorine gas might occur. Pre-placement medical

examination including a chest X-ray is recommended for all new entrants and follow-up medical

examinations at suitable intervals for all workers handling chlorine.

Employee Training—Training classes for both new and old employees should be conducted

periodically to keep them conscious and informed of the hazards. There should be periodic drill and

instruction regarding location, purpose and use of personal protective equipment, safety showers, eye

fountains, first aid kits, etc. They should be cautioned to prevent leaks, avoid inhalation of gas and

direct contact with the liquid. They, should be told to report to proper authorities immediately in case

of an equipmen failure.

All workers should be instructed and trained to adopt preventive measures in case of emergency.

Such training should include knowledge of emergency, firefighting equipment, fire alarms, crash shut-

down procedures for valves and switches, steps to be taken before starting repairs anywhere in the

plant, use of personal protective equipment and first-aid. Regular and surprise drills for the above

should be conducted to improve further the training in preventive and emergency aspects.

Eye protection devices should always be worn in a chemical plant. If there is danger of contact with

liquid chlorine, it is essential to wear a gas mask with a full facepiece.

Respiratory Protection

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A suitable gas mask should be available to every employee involved with chlorine handling.

Respiratory protective equipment should be carefully maintained and kept in clean, dry, light-proof

cabinets properly protected by paraffined paper or polyethylene bags. Cleaning and inspection by

competent person is generally necessary after each occasion on which the apparatus is used and

should, in any case, take place at least once a month. Equipment used by more than one person

should be sterilized after each use. A defective or. inoperable mask is worse than none at all.

So far as it is possible and consistent with efficient protection and use, the protective equipment

should be comfortable to work with.

No person wearing a respirator should enter a chlorine contaminated area unless attended to by an

observer who can rescue him in the event of respirator failure or other emergencies.

Respiratory Protective Devices—have moulded flexible face pieces with transparent windows which

vary in size and shape. Eye protection is imperative due to the irritating nature of moist chlorine gas or

liquid chlorine splashes. Provision for exhaust air is accomplished by various types of valving devices

which remain tightly closed during the intake cycle of breathing. Connections between the face piece

and other parts of the apparatus utilize a flexible tube, which permits free head movement. This tubing

shall be visually inspected and tested for performance at frequent intervals. If leaks in the face piece,

tube, or tube connections cannot be eliminated by tightening the head straps, the complete face piece

and attached flexible tube shall be replaced.

It is equipped with a cylinder of respirable air carried on the body, and is suitable for high

concentrations of chlorine in an oxygen-deficient atmosphere and is preferred means of respiratory

protection. Such apparatus operates for a specified length of time.

Industrial Canister-Type Masks—It is equipped with a chlorine or all-purpose canister and is suitable

for moderate concentrations of chlorine,

provided sufficient oxygen is present. The mask should be used for a relatively short exposure period

only. It may not be suitable for use in an emergency. For example, the rupture of a chlorine container

coincident with oxygen-consuming fire would clearly indicate the use of a self-contained or supplied-

air protective device, since, at that time, the actual chlorine concentration may exceed the safe 1-

percent limit and the oxygen content may be less than 16 percent by volume. Under this condition

suffocation is likely to result.

The canister removes contaminants during inhalation but does not supply oxygen. The wearer must

leave the contaminated area immediately on detecting the odour of chlorine or on experiencing

dizziness or difficulty in breathing; these are indications that the mask is not functioning properly, that

the chlorine concentration is too high, or that sufficient oxygen is not available.

Unless the presence of other gases requires the use of an all-purpose canister, the chlorine canister

should be used. The service life of a canister depends on the size of the unit, the chlorine

concentration and humidity of the atmosphere to which it is exposed, and the rate of breathing. It

usually varies from 15 minutes or less at high concentration up to several hours at very low

Volume-III: Price Bid Daisar Sump

concentrations. Canisters installed in the mask proper with seals broken to render the unit

immediately available, do not retain their chlorine-absorptive capacity and shall be replaced

immediately after use or within 1 year in any case.

Spare canisters should be stored in a cool, dry, accessible place, with seals intact, and dated so that

rotation of new supplies is possible.

Exceeding manufacturers recommended limits on maximum non-use shelf life might be hazardous.

Regular replacement of over-age canisters, even though unused, is recommended. Canisters should

be periodically checked for their efficiency.

Positive Pressure (Blower) Hose Mask—It is equipped with air supplied through a hose from a

remote blower and is suitable for high concentrations of chlorine provided conditions will permit safe

escape if the air supply fails. This device is suitable in any atmosphere, regardless of the degree of

contamination or oxygen deficiency, provided that clean, breathable air can be reached. This device is

of the continuous flow type.

Demand-Type Hose Mask—It supplies air to the facepiece (at a rate governed by breathing) of the

user only when he inhales. Air supply for this device may be full-sized compressed air ^cylinders or a

compressor. As for continuous flow type units, the air supply must be suitable for respiration.

Combination units are available which consist of a self-contained demand air unit with a reinforced,

high-pressure hose through which air is supplied to the demand regulator from remote air cylinders or

a compressor. In the event that escape is not possible through the path of entry, the air hose

may be disconnected and escape made using air supplied by the demand air unit on the user’s back.

The information given above should be abstracted, and put into a form which is not only suitable for

instant use in the event of emergency, but which may also be used as the basis for first-aid drill.

Regular rehearsals, which include the entire testing procedure and wearing of the equipment, will help

to save the life of an employee faced with an emergency.

Prevention From Long-Term Effects—The danger from long-term effects may be minimized by

maintaining careful medical supervision of those exposed to the hazard, removing from contact

anyone who shows early symptoms of being affected, and by excluding anyone who may be expected

to show undue sensitivity by reason of existing bodily defect or disease.

Containers, piping and equipment should be checked for leaks daily. If a leak is detected it should be

reported and immediate steps taken to correct the conditions.

EMERGENCY MEASURES

Wherever chlorine is handled a potential risk is involved and a serious, emergency might suddenly

and unexpectedly occur. Emergency situations should be anticipated, plans established and persons

trained to counteract them.

Mode of Measurement & Payment:

The payment shall be made on Number as per Schedule-B.

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Providing, Supplying Digital Chlorine Detector Monitor meter- 0 to 20 ppm Capacity

 LCD dot matrix display, direct readout of gas type, unit, concentration, local time, etc.

 Support English/Chinese operation, easy to shift.

 Gas concentration unit PPM and mg/m3 can be shift quickly.

 Built-in micro-sampling pump, 10 grades of suction are available.

 Explosion-proof certification

Gas Detector Functions

 With self-calibration and zero calibration functions, makes the detection more accurate

 One key to restore factory setting, free from maloperation.

 With temperature and pressure compensation, able to realize the compensation for the

gas concentration under different temperature and pressure environments.

 Two-stage alarm with sound and light, and alarm point is settable.

 Rechargeable lithium polymer battery with large capacity.

 High-strength special engineering plastic housing, with anti-slip, waterproof, dustproof

and explosion-proof

Model ATO-GAS-Cl2

Sampling Method Pump type, flow rate can be up to 750 ml/min

Detection Principle Electrochemistry

Gas Chlorine (Cl2)

Range (Optional) 0 to 20 ppm

Resolution 0.001 ppm (0-5ppm), 0.01ppm (0-100ppm)

Accuracy ≤±3% F.S.

Response Time ≤10s

Repeatability ≤±1%

Recovery Time ≤10s

Linearity Error ≤±1%

Zero Shift ≤±1% (F.S./year)

Data High speed data transmission by USB, available for data

Logging (Optional downloading and printing (The built-in IC card has about

Function) 2G memory, which can record 100,000 sets of data.)

Alarms Sound, light and vibration

Display LCD dot matrix display

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Language Chinese / English

3.7V rechargeable lithium battery, 3.7 Watt

Battery (Charger included: Input AC 100-240V 50/60Hz with

optional USA, Europe or UK plug)

Operating Time 100h (Pump off)

Mini USB interface supports standard MODBUS

communication protocol

Explosion-proof

Case Material ABS+PC

Case Material ABS+PC

Protection Grade IP66

Certification CE, ATEX

Operating Humidity 0~95%RH (non-condensing)

Operating Pressure 0.8~1.2bar

Dimension 205*75*32mm

Warranty 12 months

Calibration kit - gas pressure regulator (calibration gas

cylinder NOT included)

• Body Material: Stainless steel

• Input Range of Pressure Gauge: 0-25MPa

• Output Range of Pressure Gauge: 0-0.6Mpa

• Input Pressure: ≤15MPa

• Output Pressure: ≤0.45MPa

• Rated Flow: 0.6 m3/h

• Connection: Inlet: W21.8-14 teeth/inch (levorotation,

dextrorotation) ; Outlet: Ф6 flexible tube

Mode of Measurement & Payment:

The payment shall be made on Number as per Schedule-B.

Laboratory Instruments

Chloroscope 0.5 ppm including testing materials.

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The Chloroscope (Free Residual Chlorine Test Kit) shall be a portable, heavy-duty

field instrument designed for the rapid visual determination of free

residual chlorine levels in drinking water and municipal supplies. The kit

must incorporate a robust comparator block constructed from UV-

resistant, non-corrosive ABS plastic housing a series of permanent,

non-fading optical color reference standards. The optical scale shall be

calibrated to measure chlorine concentrations ranging from 0.1 mg/L

(ppm) to 2.0 mg/L (ppm), with a distinct, high-precision reference

marker specifically at 0.5 mg/L (ppm) to facilitate clear verification

against regulatory drinking water standards. The visual comparison

mechanism must feature a dual-slot arrangement allowing side-by-side

illumination and color matching between the reacted sample and the

reference glass or optical film.

The complete supply shall include two precision optical glass or shatterproof

acrylic sample tubes featuring clear 10 mL volume graduation lines.

Chemical testing materials shall consist of either stabilized Orthotolidine

(OT) liquid reagent in a 125 mL leak-proof amber dropper bottle or a

minimum of 100 DPD No. 1 rapid-dissolving tablet reagents compliant

with standard testing methods (IS 3025 / APHA). All reagents provided

must carry a minimum shelf life of 12 months from the date of delivery.

The unit, tubes, reagents, glass dropper with teat, test tube cleaning

brush, and laminated operation manual must be housed within a

custom-fitted, high-impact molded plastic carrying case designed to

withstand field handling and moisture exposure. The manufacturer must

hold ISO 9001 certification, and each kit shall be supplied with a batch

quality inspection certificate and a 12-month manufacturer warranty.

Mode of Measurement & Payment:

The payment shall be made on Number as per Schedule-B.

Laboratory Instruments

Chloroscope 0.2 ppm including testing materials.

The chloroscope shall be a portable, manually operated residual chlorine testing kit suitable

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for the determination of free residual chlorine in drinking water at water treatment plants,

overhead service reservoirs, clear water reservoirs, and distribution systems. The instrument

shall operate on the colorimetric comparison principle using the Orthotolidine (OT) or DPD

reagent method and shall be capable of accurately measuring free residual chlorine with a

resolution sufficient to determine a concentration of 0.2 ppm (mg/L). The comparator shall be

manufactured from high-quality transparent acrylic or impact-resistant plastic and shall

include a permanent colour standard for visual comparison. The kit shall consist of a colour

comparator block, two graduated transparent test tubes of approximately 10 mL capacity,

reagent bottle(s) containing Orthotolidine or DPD reagent, a reagent dropper, test tube caps

or stoppers, cleaning brush, instruction manual, and a durable carrying case for safe storage

and transportation. The instrument shall require no external power source and shall provide

rapid test results within approximately one minute. The testing procedure shall involve

collecting the water sample in the test tube, adding the specified number of reagent drops,

mixing thoroughly, and comparing the developed colour with the standard colour comparator

to determine the free residual chlorine concentration. The chloroscope shall be suitable for

routine field testing and laboratory use for monitoring the residual chlorine level in potable

water supplies. The complete kit shall be supplied with all necessary accessories and

sufficient reagent for routine testing, ensuring reliable measurement of a free residual

chlorine concentration of 0.2 ppm in accordance with standard drinking water quality

monitoring practices.

Mode of Measurement & Payment:

The payment shall be made on Number as per Schedule-B.

U PVC SCH40 for cold water 25 mm dia (1)"

GENERAL : The item includes supplying of UPVC soil, waste and rain water (SWR) and ventilation

pipes with fittings of specified diameter including laying, fixing, cutting, joining, painting if required

etc. 16.2 MATERIAL : The pipes shall conforming to IS 13592, UPVC - SWR (Type ‘A’ or ‘B’ as

specified) and fittings conforming to IS 13591 shall be free from cracks, flaws and defects and shall

be U. V. stabilized and able to withstand a pressure as mentioned in the schedule of work. Rubber

sealing rings conforming to IS 5382 with lubricant for sliding socket joints as mentioned in the

schedule of work.

EXAMINING : Before laying the pipe line, it shall be first examined for damages and cracks, No

cracked or damaged pipe and fittings shall be used in the work and they shall be removed from the

site by the contractor at his own cost and charge.

CLEANING : All the pipes and fittings shall be thoroughly cleaned with brush and washed if

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necessary to remove any accumulated stone, soil or dirt inside and out side surfaces.

: The pipes shall be carefully laid straight to the correct alignment in gradients as indicated in the

drawing. All the pipe shall be used in standard length as far as possible. Cut length may be used

only where it is necessary to make up exact length. The entire length of pipe shall be evenly

supported on bed of the trench through out. Care shall be taken to prevent any sand, earth or other

materials from entering into the pipes during laying. At the end of day's work the open end shall be

suitably plugged.

FIXING : The pipe line shall be fixed in position as shown in the drawing or as directed by the

Engineer-incharge. The pipe shall be fixed with G.I. clamps not less than 2.0 mm thick of with

suitable UPVC clamps/clips, The clamps/clips shall be fixed into the wall with G.I. nails not less than

40 mm long and wooden gutties keeping the pipe about 15 mm clear of the wall.

MAKING JOINT : The jointing of pipes and fittings generally shall be done with approved make

cement solvent including making surface rough or rubber sealing rings with lubricant for sliding

socket joints . The pipe shall be cut to desired length. Care shall be taken that that profile or cut

surfaces shall not be changed and the fibrous material shall be removed with scraper or knife. : 58 :

DETACHABLE JOINT : Detachable joints shall be made where pipes of different materials have to

be jointed or as specified in the schedule. The flanges are first pushed over the pipe ends and

jointing shall be made by cement solvent.

PAINTING : In case of underground piping, the pipe line shall be painted with two coats of approved

oil paint of matching colour over a coat of primer.

DEWATERING : In case of underground pipes ,the contract rate shall include bailing or pumping out

all the water till completion or work if accumulated during the progress of work either from seepage,

springs, rain or any other cause.

THE RATE INCLUDES FOR : 1. Supplying of UPVC-SWR pipes and fittings of specified diameter.

Laying and cutting the pipe wherever necessary and wastage. 3. Fixing the pipe line with G.I. clamps

not less than 2mm thick and G.I./M.S. nails length not less than 40mm or with UPVC clamps, screws,

wooden gutties etc. 4. Making the solution joint and painting if mentioned in schedule of work the

pipe line. 5. In case of underground pipes , dewatering if necessary till completion of work. 6. All

necessary materials, labour and use of tools.

MODE OF MEASUREMENT : The measurement shall be for unit running meter length of pipe line

laid of fixed. The measurement shall be taken along the center line of pipe. No measurement shall be

recorded separately for fittings, making joint, painting if mentioned in schedule of work and testing.

Mode of Measurement & Payment:

The payment shall be made on Running meter as per Schedule-B.

Excavation for pipe line trenches for water supply, sewerage line, manhole etc all with

shoring and struting if required as per required gradient and line including safety

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provisions using site rails and stacking excavated stuff including up to all required

lead cleaning the site etc Complete for all lifts and strata as specified.

(a) In all sorts of soil and soft murrum

Upto 1.5mtr Depth

1.5 to 3.0 mtr Depth

1.1 The excavation for trenches will generally, refer to open excavation for trenches in wet / dry

conditions for pipe laying work.

CLEARING OF SITES:

The site on which the pipelines are to be laid and shown on plan and the area required for setting out

and other operations shall be cleared and all obstruction loose stones and materials, rubbish of all

kinds, stumps, brushwood as trees shall be removed as directed the roots shall be entirely grubbed

The products of the clearing to restocked in such a place and in such a manner, as directed by

the engineer in charge.

In jungle clearings, all trees not specially marked for preservation, bamboo’s jungle wood and

brushwood shall be cut down their roots grubbed up. All wood and materials from the clearing shall

be the property of the Board shall be arranged as directed by the Board Engineer or his authorized

agent, the material pronounced as useful by the Engineer will be conveyed and properly stacked as

directed within the specified limit. Unless materials will be burnt or otherwise disposed of as directed.

All holes or hollows whether originally existing or produced by digging up roots, shall be carefully

filled up with earth, well earth, well rammed leveled off, as may be directed.

3.0 SETTING OUT:

The center lines of all pipe trenches etc. shall be given by the Engineer-in-charge and it will be the

responsibility of the contractor to install substantial reference marks, bench marks, etc. and maintain

then as long as required true to line, level curve and slopes. The contractor shall assure full

responsibility for alignment, and dimension of trench.

The labor materials etc. required for setting out and establishing benchmarks and other reference

marks shall be arranged by the contractor at his own cost.

The excavation incl. Bailing out of water for the pipe trenches shall also incl. Removal of all materials

of whatever nature and whether wet or dry condition necessary for laying of pipelines exactly in

accordance with alignment, levels grades and curves shown on the plans or as directed by the

Engineer-in-charge. Trenches shall be excavated to the exact width and depth according to the size

of pipe and the sides shall be left vertical as far as possible or according to the angle of repose of

various soils. Unless there is a specific extra provision in the contract for shoring and strutting or for

cutting side slopes the contractor shall at his own cost do the necessary shoring and strutting or

cutting of slopes to a safe of repose or both approved by the Engineer-in-charge. As per Site

condition if Extra width or depth require then prior permission of concern chief engineer is required.

The contractor shall notify the Engineer before starting excavation to enable him to take cross

sectional levels for purpose of measurements before the ground is disturbed. The bottom of the

trenches shall be leveled both longitudinally and transversely or slopped as directed by the Engineer.

The contractor shall at his own cost to remove such portions of boulders or rocks, as are rectified to

make the bottom of the trench level. No filling shall be allowed to bring the trench to level. If by

contractor’s mistake excavation is made deeper than shown on the plans and if ordered by the

Engineer the extra depth shall have to be made with selected excavated stuff only with watering,

remedying etc. as directed, by the Engineer and at the cost of the contractor. Other hard excavation

shall be cleared of all sorts and loose materials and cut to firm surface, either level, stepped as

directed by the Engineer. The Engineer may order such charges in the dimensions and alignment of

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pipe trench as may be deemed necessary to secure satisfactory cover over pipeline. The contractor

shall, at his own expense, make provision for bailing out of draining water and the trenches shall be

kept free of water, during laying work.

After each excavation is completed, the contractor shall notify the Engineer to that effect and no

laying of pipeline will be allowed to laid until Engineer has approved the depth and dimensions of

trenches level and measurements.

The minimum width of trench should be 25 CM on each side of the pipe the rate includes cost of

dewatering, blasting if required and as per detailed specification etc complete.

5.0 SHORING AND STRUTTING:

Shoring & strutting and dewatering if required shall have to be carried out by the contractor, for which

any extra charge will not be paid During excavation if water connections, sewage connections,

telephone lines khalkuva (soak pits) etc. are damaged by the contractor, the same shall have to be

restored by the contractor without any extra payment.

The trenches shall be strongly fenced and red-light signal shall be kept at night and arrangement

of watchman to prevent accidents should be done, sufficient care protective measure shall be taken

to see that the excavation shall not affect or damage the adjoining structure. The contractor shall be

entirely responsible for any injury to life and damage to the properties etc. Necessary protection

works such as guide ropes, crossing places, barricades, caution boards etc. shall be provided by the

7.0 The excavation in all sorts of soil, hard murram, soft rock or hard rock or any type of soil shall

have to be carried out up to the required depth by the agency, no extra payment shall be given for

soft/ hard rock.

8 DISPOSALS OF EXCAVATED STUFF

No excavated stuff from trench are to be placed even temporarily nearer than 1.5 meter or

greater distance up to 90 meter or as prescribed by the Engineer from the outer edge of trench. All

excavated material will be the property of the board. The rate of excavated includes sorting out of

useful materials and stacking then separately as directed within specified lead. The excavated stuff

suitable and useful for refilling or for other use shall be stacked at convenient places. The materials

not useful in any wet shall be disposal off as directed by the Engineer from the outer edge of trench.

8.2 The site should be cleared off on completion of work.

9.0 ADDITIONAL REQUIREMENTS

At the joints of pipes, the trench shall be excavated to an additional depth of 15 cm. and width of

30 cm. And length of 15 cm. beyond the edge of collar on both the sides or as directed. The rate

includes for such extra excavation made at the joints. The trenches shall be excavated perfectly in

straight line. The bottom of the trench shall be kept as per invert level or as directed. To maintain the

proper slop the usual method of site rails and boning rods shall be adopted. The contractor shall

have to provide and fix and maintain sight rails and boning rod without any extra cost.

9.1 If the contractor fails or makes delay to give hydraulic test of the pipe line laid in any of the

section, without any genuine reason, he shall be responsible to get any part of the length trenches

refill in such case i.e. before tasting for safety of pedestrian and/or vehicular traffic as found

necessary by the engineer-in-charge without any extra cost. If found necessary any directed by the

Engineer-in-charge. The contractor shall have to excavate the refilled trenches, during hydraulic test

without any extra cost.

At all road crossings, trenches shall be excavated only for half width of the road and pipe shall

be laid. The other half shall be excavated only after back filling over the laid pipeline is done so as to

make it suitable for the traffic. The contractor shall provide direction when the pipeline is to be laid

along the road as required and shall maintain the diversion or any part of it, without any extra cost. At

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all road crossings, the pipe shall be laid below the crest of read.

9.2 The contractor shall break the road surface by excavation chiseling to the exact width

and length as shown on the drawing or as directed by the Engineer-in-charge.

The excavated stuff shall be deposited in uniform layers to avoid mixing with other kind of

materials at non-objectionable place or as directed by the Engineer-in-charge.

MEASURMENT AND PAYMENT

As per Price bid or Payment Schedule.

This item of excavation shall include unless and otherwise mentioned.

(a) Clearing of site

(b) Setting out work including all materials and labour.

(c) Providing and subsequently removing, shoring and strutting outing slopes etc.

(d) Excavation and removal and staking of all excavated stuff as directed.

(e) Necessary protection including labour materials equipment etc. to ensure safety and protection

against risk or accident.

(f) Providing facilities for inspection and damage to property if caused during progress of work.

(g) Compensation for injury to life and damage to property if caused during progress of work.

(h) Restoring of water supply connections, sewer connections, telephone

lines, khalkuva soapiest etc. if damaged by contractor without extra

(i) Dewatering of excavated pit trench during the progress of work.

(j) Clearing the site on completion of works directed by the Engineer.

Mode of Measurement & Payment:

The payment shall be made on Cum as per Schedule-B.

Refilling the pipeline trenches incl. ramming, watering, consolidating desposal of

surplus stuff as directed within a radius of 3 km.

Refilling as directed

On completion of the pipe laying operations in any section, for a length of about 100m and while

further work is still in progress, refilling of trenches shall be started by the Contractor with a view of

restricting the length of open trenches. Pipe laying shall closely follow the progress of Trench

Excavation and the Contractor shall not permit unreasonably excessive lengths of trench excavation to

remain open while awaiting testing of the pipeline. If the Engineer considers that the Contractor is not

complying with any of the foregoing requirements, he may prohibit further trench excavation until he is

satisfied with the progress of laying and testing of pipes and refilling of trenches. The excavated

material nearest to the trench shall be used filling. Care shall be taken during backfilling, not to injure

or disturb the pipes, joints or coating. Filling shall be carried out simultaneously on both sides of the

pipes so that unequal pressure does not occur. Walking or working on the completed pipeline unless

the trench has been filled to height of at least 30cm over the top of the pipe except as may be

necessary for tamping etc., during backfilling work.

The remaining portion of the trench may be filled in with a mixture of hard and soft material free from

boulders and clods of earth larger than 150mm in size if sufficient quantity of good earth and murrum

are not available. The trench shall be refilled so as to build up to the original ground level, keeping due

allowance for subsequent settlement likely to take place. The top 300mm layer or fertile agricultural

soil shall be kept aside during excavation and shall be laid in layers near ground level during refilling.

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To prevent buckling of pipe shell of diameters 1200mm and above, pipes shall be strutted from inside

while the work of refilling is in progress, for which no separate payment shall be made.

Strutting shall be done by means of strong spiders having at least 6 arms which shall be sufficiently

stiff to resist all deformation. Spiders shall be provided at a maximum interval of 2m & shall be welded

in such a way that internal coating does not get burnt.

The Engineer shall, at all times, have powers to decide which portion of the excavated materials shall

be for filling and in which portion of the site and in what manner it shall be so used.

If any material remains as surplus it shall be disposed of as directed by the Engineer, which includes

loading, unloading, transporting and spreading as directed within all lead. If the Contractor fails to

remove the earth from site within 7 days after the period specified in a written notice, the Engineer

may arrange to carry out such work at the Contractor's risk and cost or may impose such fine for such

omission as he may deem fit. Particular care shall be taken to keep the trench dry during the entire

refilling operation.

If suitable material for refilling is not available for excavation the Contractor shall bring earth, murrum

of approved quality as directed by the Engineer.

No mechanical plant other than approved compacting equipment shall run over or operate within the

trench until backfilling has reached its final level or the approval of the Engineer has been obtained.

Subsidence in filling in : Should any subsidence take place either in the filling of the trenches or near

about it during the maintenance period of 24 months from the completion of the Contract Works, the

Contractor shall make good the same at his own cost or the Engineer may without notice to the

Contractor, make good the same in any way and with any material that he may think proper, at the

expense of the Contractor. The Engineer may also, if he anticipates occurrence of any subsidence,

employ persons to give him timely notice of the necessity of making good the same, and the expenses

on this account shall be charged to the Contractor.

Mode of Measurement & Payment:

The payment shall be made on Cum as per Schedule-B.

Supply of Chlorine Cylinders (Empty)

Providing and Supply of Chlorine cylinders Empty of required capacity with necessary

explosive certificates including all taxes.

(A) 900 Kg Capacity

Containerized liquid chlorine transport above 100 kg utilizes TONNERS (large horizontal cylindrical

containers typically designed to hold 900 kg net capacity). At the consumer’s end, tonners act as bulk

storage and feed directly into the chlorination process (either liquid or gas withdrawal depending on

orientation and manifold setup).

Because chlorine is liquefied under substantial pressure inside the container, these tonners strictly fall

under the purview of the Gas Cylinder Rules (and subsequent amendments). Design, fabrication,

filling, testing, inspection, storage, and transportation must comply with these statutory rules and

applicable standards (such as IS: 6512 / IS: 7285 equivalents or ASME / British Standards accepted by

the Chief Controller of Explosives). Any party possessing multiple containers must maintain statutory

licenses under the Gas Cylinder Rules.

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TECHNICAL SPECIFICATIONS :: 900 KG CAPACITY TONNER

Parameter Specification for 900 Kg Tonner

Manufactured and tested as per CCE-approved standard

Container Standard /

1 drawings ( conforming to IS / BS: 1500 / ASME Sec VIII

2 Water Capacity (WC) Approx. 780 Liters

900 Kg (Max filling up to 930 kg based on a maximum

3 Chlorine Capacity

filling ratio of 1.25)

Maximum Working /

4 1.99 MPa to 2.07 MPa

Design Pressure

Hydraulic / Pneumatic

5 Min. 29.85kg/cm2 to 31.15 kg/cm2

Outside Diameter: 760 mm – 798 mm

Nominal Dimensions

Overall Length: 2,060 mm – 2,100 mm

Shell: Min. 10.0 mm to 12.0 mm

Dished / Head Ends: Min. 9.6 mm to 14.0 mm

8 Tare Weight (Empty) Approx. 500 Kg to 625 Kg (excluding safety hood/valves)

Material of Heavy-duty Seamless/Welded Pressure Vessel Steel (e.g.,

Construction SA 516 Gr. 70 or equivalent carbon steel)

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Horizontal cylindrical container with rolling hoops/skids

10 Construction Type

welded to the body for safe rolling and support.

CONTAINER VALVES & FITTINGS ::

 Valves: Fitted with two identical standard dual-port valves (typically 3/4" or 5/8" thread

conforming to IS: 3224 / approved specifications) positioned on one end head, allowing liquid

or gas withdrawal. Valves must be approved by the Chief Controller of Explosives (CCOE).

 Valve Protection: Protected by a rigid, heavy-duty structural steel safety bonnet / protective

housing cap securely bolted over the valves during transit and storage.

 Fusible Plugs: Equipped with 4 to 6 fusible plugs (typically threaded into the container heads)

designed to melt at a precise temperature range (65°C to 74°C) to safely relieve pressure and

prevent tank rupture during a fire hazard.

ROLLING HOOPS & STRUCTURAL ATTACHMENTS ::

 Rolling Hoops: Two heavy-duty steel rolling hoops/chimes shall be securely fitted and welded

around the cylindrical shell to protect the body during rolling and handling.

 Lifting Lugs / Support Pads: Fitted with integrated lifting attachments designed to safely

handle the tonner via a spreader/lifting beam when empty or full.

TEST CERTIFICATES & STATUTORY APPROVALS ::

The contractor shall supply empty chlorine tonners accompanied by comprehensive test certificates

from a statutory/competent authority with all standard quality checks:

1. Explosive Department Approval: Valid No Objection Certificate (NOC) / Design

Approval from the Chief Controller of Explosives (Nagovernment of India, Nagpur)

permitting fabrication and safe gas filling.

2. Third-Party Inspection: Inspection certification from recognized agencies (e.g., Lloyd's

Register, Bureau Veritas, or equivalent CCE-recognized inspectorate).

3. Material & Fabrication Test Results:

o Full chemical and physical material test reports of steel plates.

o Details of welding processes (Longitudinal and circumferential seams, bungs/pads).

o Heat Treatment: Full stress-relief annealing certificate.

o Radiography / X-Ray Examination: 100% X-ray/radiography report for all

longitudinal and circumferential weld seams.

4. Pressure & Stress Test Records:

o Hydrostatic pressure test reports.

o Pneumatic leak test certificates for valve threads and bung joints.

o Burst test and volumetric permanent stretch documentation (as per prototype design

ADDITIONAL SUPPLIES ::

 Each tonner shall be delivered with a dedicated set of standard gaskets, spare valve caps, and a

comprehensive operator's maintenance manual.

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(B) 100 Kg Capacity

There are basically two types of containers used in the supply and consumption of chlorine, i.e., (1)

CYLINDERS and (2) TONNER. Cylinders are small containers with a net carrying capacity in the

range up to 100 kgs. At the consumer’s end the cylinder is directly connected to the process and the

chlorine withdrawn as required. Thus the container is also used as a storage medium at the

consumer’s end. Both in the interest of safety as also longer service life; it is necessary that these

containers are handled with appropriate care. Chlorine is filled in the container as liquid chlorine and

remains inside under substantial pressure. As such cylinders come within the ambit of the Gas

Cylinder Rules - 1981. All operations including the design, fabrication, filling, loading, unloading,

storage, transportation etc., are governed by the provisions of these Rules. Further any party

possessing more than 5 containers at any one time will have to take out a license under the Gas

Cylinder Rules -

1 Chlorine Gas Cylinder confirms. IS:

2 Liquid capacity. 84 Lit.

3 Chlorine Capacity. 100 Kg.

4 Maximum working pressure. 19.90 kg/cm 2 at 65 degree C.

5 Hydraulic test pressure. 29.85 kg/cm2

5 Nominal Dia (Approx.) INSIDE :: 356 mm.

OUTSIDE :: 368 mm.

6 Nominal wall thickness. 6 mm.

7 Tare weight excluding cap. 65 Kg.

8 Construction. 3 Piece.

The Indian Standard Institution has laid down standard specifications for a 100 Kgs., chlorine

cylinder in IS: 7681. The contractor shall supply empty chlorine gas cylinder according to standards

The standard Cylinder is a cylindrical container of welded steel construction with one end closed and

a valve at the other end. A valve protective hood is fitted on to the threaded neck ring.

In a vertical position, with the valve at the top, chlorine in gaseous form can be withdrawn from the

cylinder. If, however liquid chlorine is to be drawn, the cylinder can be inverted to bring the valve

towards the bottom with the use of an inverting rack.

CONTAINER VALVE ::

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Chlorine cylinders are fitted with standard valves confirming to IS: 3224 and approved by the Chief

Controller of Explosive.

The valve connection shall consist of a welded or brazed pad boss or nipple and shall be threaded to

suit the type of valve specified in IS: 3224-1971. If welding is adopted, then two runs of welding shall

be done for bungs, which have a backing pad (Either on the outside or one on outside and one on

inside). In the case of bungs without backing pad one run of welding shall be given on the inside and

one on the outside. If the positive projections of a bung inside the cylinder are more than 4 mm the

same may be welded only on the outside with two runs of weld.

The valve shall be protected on one of the following ways:

 By a stout metal cap perforated for ventilation and of thickness not less than 2.5 mm screwed

on to the neck. The construction of the metal cap shall to such that it is nowhere in contract with any

part of the value or valve body.

 By a stout metal collar welded to the upper end of the cylinder concentric with the neck. The

height and the diameter of the collar shall ensure adequate protection to the valve. The thickness of

the collar shall not be less than that of the cylinder wall thickness.

 By any other manner approved by the statutory authority.

Fittings other than valves ::

Handle or other suitable arrangement for handling the cylinder shall be provided it shall be

capable of withstanding static loadings in ay direction equal to twice the weight of the cylinder when

filled with water.

The foot ring where fitted as a separate fixture to the bottom end of the cylinder shall be at lest

mm away from the circumferential weld. The thickness of the head layer, which the foot ring is made,

shall not be less than 2.4 mm. The loot ring may be intermittently welded and its bottom edge shall

be curled inwards to facilitate safe handling. It shall be provided with holes for ventilation as well as

draining holes to avoid corrosion. The maximum permissible deviation from the vertical shall not

exceed 1’. The loot ring shall not be less than 25 mm below the outside bottom of the cylinder shell.

TEST CERTIFICATE ::

The contractor shall supply chlorine cylinder with test certificates from competent authority, with all

standard test as per IS code.

The contractor shall provide NO OBJECTION certificate of competent authority of Government of

India, Department of Explosive, Nagpur with all test certificate to permission for filling.

Contractor shall provide certificate of cylinder manufactured, inspected, and tested as per IS:

as per standard drawing approved by CCE.

Certificate having test results of ::-

Volume-III: Price Bid Daisar Sump

1 Welding Process.

Longitudinal seam.

Circumferential seam.

2 Method of support.

3 Heat treatment.

4 Shell & Dished end.

5 Bung and Bung welding.

6 Foot ring welding.

7 Internal examination before closing in

8 Longitudinal & Circumferential welding.

9 Serial No Stamping.

10 (i) Radiography/X-Ray examination for

welds. Longitudinal & Circumferential.

(ii) Bung Threads.

(iii) Gap Threads.

(iv) Leakage at valve thread joint.

12 Finishing and Painting.

13 Hydrostatic test at 45 kg/cm2.

From Date : ______ to Date :______ .

14 Pneumatic Test at 45 kg/cm2.

15 Acceptance Test.

(i) Cylinder No. :

(ii) Burst Pressure :

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(iii) Nominal Hoop Stress.:

(iv) Cylinder burst without fragmentation.

(v) Total Stretch.

(vi) Permanent.

Tool kits and operator’s manuals shall be supplied with each cylinder.

 Rate shall be paid per Number of cylinder supplied with all test certificates.

Mode of Measurement & Payment:

The payment shall be made on Number of cylinder supplied with all test certificates as per Schedule-

Refilling of Chlorine gas in cylinder including transportation to and from factory and

(A) 900 Kg Capacity

Containerized liquid chlorine transport above 100 kg utilizes TONNERS (large horizontal cylindrical

containers typically designed to hold 900 kg net capacity). At the consumer’s end, tonners act as bulk

storage and feed directly into the chlorination process (either liquid or gas withdrawal depending on

orientation and manifold setup).

Because chlorine is liquefied under substantial pressure inside the container, these tonners strictly fall

under the purview of the Gas Cylinder Rules (and subsequent amendments). Design, fabrication,

filling, testing, inspection, storage, and transportation must comply with these statutory rules and

applicable standards (such as IS: 6512 / IS: 7285 equivalents or ASME / British Standards accepted by

the Chief Controller of Explosives). Any party possessing multiple containers must maintain statutory

licenses under the Gas Cylinder Rules.

TECHNICAL SPECIFICATIONS :: 900 KG CAPACITY TONNER

Parameter Specification for 900 Kg Tonner

Manufactured and tested as per CCE-approved standard

Container Standard /

1 drawings ( conforming to IS / BS: 1500 / ASME Sec VIII

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2 Water Capacity (WC) Approx. 780 Liters

900 Kg (Max filling up to 930 kg based on a maximum

3 Chlorine Capacity

filling ratio of 1.25)

Maximum Working /

4 1.99 MPa to 2.07 MPa

Design Pressure

Hydraulic / Pneumatic

5 Min. 29.85kg/cm2 to 31.15 kg/cm2

Outside Diameter: 760 mm – 798 mm

Nominal Dimensions

Overall Length: 2,060 mm – 2,100 mm

Shell: Min. 10.0 mm to 12.0 mm

Dished / Head Ends: Min. 9.6 mm to 14.0 mm

8 Tare Weight (Empty) Approx. 500 Kg to 625 Kg (excluding safety hood/valves)

Material of Heavy-duty Seamless/Welded Pressure Vessel Steel (e.g.,

Construction SA 516 Gr. 70 or equivalent carbon steel)

Horizontal cylindrical container with rolling hoops/skids

10 Construction Type

welded to the body for safe rolling and support.

CONTAINER VALVES & FITTINGS ::

 Valves: Fitted with two identical standard dual-port valves (typically 3/4" or 5/8" thread

conforming to IS: 3224 / approved specifications) positioned on one end head, allowing liquid

or gas withdrawal. Valves must be approved by the Chief Controller of Explosives (CCOE).

 Valve Protection: Protected by a rigid, heavy-duty structural steel safety bonnet / protective

housing cap securely bolted over the valves during transit and storage.

 Fusible Plugs: Equipped with 4 to 6 fusible plugs (typically threaded into the container heads)

designed to melt at a precise temperature range (65°C to 74°C) to safely relieve pressure and

prevent tank rupture during a fire hazard.

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ROLLING HOOPS & STRUCTURAL ATTACHMENTS ::

 Rolling Hoops: Two heavy-duty steel rolling hoops/chimes shall be securely fitted and welded

around the cylindrical shell to protect the body during rolling and handling.

 Lifting Lugs / Support Pads: Fitted with integrated lifting attachments designed to safely

handle the tonner via a spreader/lifting beam when empty or full.

TEST CERTIFICATES & STATUTORY APPROVALS ::

The contractor shall supply empty chlorine tonners accompanied by comprehensive test certificates

from a statutory/competent authority with all standard quality checks:

5. Explosive Department Approval: Valid No Objection Certificate (NOC) / Design

Approval from the Chief Controller of Explosives (Nagovernment of India, Nagpur)

permitting fabrication and safe gas filling.

6. Third-Party Inspection: Inspection certification from recognized agencies (e.g., Lloyd's

Register, Bureau Veritas, or equivalent CCE-recognized inspectorate).

7. Material & Fabrication Test Results:

o Full chemical and physical material test reports of steel plates.

o Details of welding processes (Longitudinal and circumferential seams, bungs/pads).

o Heat Treatment: Full stress-relief annealing certificate.

o Radiography / X-Ray Examination: 100% X-ray/radiography report for all

longitudinal and circumferential weld seams.

8. Pressure & Stress Test Records:

o Hydrostatic pressure test reports.

o Pneumatic leak test certificates for valve threads and bung joints.

o Burst test and volumetric permanent stretch documentation (as per prototype design

ADDITIONAL SUPPLIES ::

Each tonner shall be delivered with a dedicated set of standard gaskets, spare valve caps, and a

comprehensive operator's maintenance manual.

(B) 100 Kg Capacity

Cylinders are small containers with a net carrying capacity in the range up to 100 kgs. At the

consumer’s end the cylinder is directly connected to the process and the chlorine withdrawn as

required. Thus the container is also used as a storage medium at the consumer’s end. Both in the

interest of safety as also longer service life; it is necessary that these containers are handled with

appropriate care. Chlorine is filled in the container as liquid chlorine and remains inside under

substantial pressure. As such cylinders come within the ambit of the Gas Cylinder Rules - 1981. All

operations including the design, fabrication, filling, loading, unloading, storage, transportation etc., are

governed by the provisions of these Rules. Further any party possessing more than 5 containers at

any one time will have to take out a license under the Gas Cylinder Rules -

1 Chlorine Gas Cylinder confirms. IS:

2 Liquid capacity. 84 Lit.

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3 Chlorine Capacity. 100 Kg.

4 Maximum working pressure. 19.90 kg/cm2 at 65 degree C.

5 Hydraulic test pressure. 29.85 kg/cm2

5 Nominal Dia (Approx.) INSIDE :: 356 mm.

OUTSIDE :: 368 mm.

6 Nominal wall thickness. 6 mm.

7 Tare weight excluding cap. 65 Kg.

8 Construction. 5 Piece.

The Indian Standard Institution has laid down standard specifications for a 100 Kgs., chlorine cylinder

in IS: 7681. The contractor shall supply empty chlorine gas cylinder according to standards of IS:

The standard Cylinder is a cylindrical container of welded steel construction with one end closed and

a valve at the other end. A valve protective hood is fitted on to the threaded neck ring.

In a vertical position, with the valve at the top, chlorine in gaseous form can be withdrawn from the

cylinder. If, however liquid chlorine is to be drawn, the cylinder can be inverted to bring the valve

towards the bottom with the use of an inverting rack.

CONTAINER VALVE ::

Chlorine cylinders are fitted with standard valves confirming to IS: 3224 and approved by the Chief

Controller of Explosive.

The valve connection shall consist of a welded or brazed pad boss or nipple and shall be threaded to

suit the type of valve specified in IS: 3224-1971. If welding is adopted, then two runs of welding shall

be done for bungs, which have a backing pad (Either on the outside or one on outside and one on

inside). In the case of bungs without backing pad one run of welding shall be given on the inside and

one on the outside. If the positive projections of a bung inside the cylinder are more than 4 mm the

same may be welded only on the outside with two runs of weld.

The valve shall be protected on one of the following ways:

 By a stout metal cap perforated for ventilation and of thickness not less than 2.5 mm screwed

on to the neck. The construction of the metal cap shall to such that it is nowhere in contract

with any part of the value or valve body.

 By a stout metal collar welded to the upper end of the cylinder concentric with the neck. The

height and the diameter of the collar shall ensure adequate protection to the valve. The

thickness of the collar shall not be less than that of the cylinder wall thickness.

 By any other manner approved by the statutory authority.

Fittings other than valves ::

 Handle or other suitable arrangement for handling the cylinder shall be provided it shall be

capable of withstanding static loadings in ay direction equal to twice the weight of the cylinder

when filled with water.

The foot ring where fitted as a separate fixture to the bottom end of the cylinder shall be at lest 20 mm

away from the circumferential weld. The thickness of the head layer, which the foot ring is made, shall

not be less than 2.4 mm. The loot ring may be intermittently welded and its bottom edge shall be

curled inwards to facilitate safe handling. It shall be provided with holes for ventilation as well as

Volume-III: Price Bid Daisar Sump

draining holes to avoid corrosion. The maximum permissible deviation from the vertical shall not

exceed 1’. The loot ring shall not be less than 25 mm below the outside bottom of the cylinder shell.

TEST CERTIFICATE ::

The contractor shall supply chlorine cylinder with test certificates from competent authority, with all

standard test as per IS code.

The contractor shall provide NO OBJECTION certificate of competent authority of Government of

India, Department of Explosive, Nagpur with all test certificate to permission for filling.

Contractor shall provide certificate of cylinder manufactured, inspected, and tested as per IS: 7680, as

per standard drawing approved by CCE.

Certificate having test results of ::-

1 Welding Process.

(i) Longitudinal seam.

(ii) Circumferential seam.

2 Method of support.

3 Heat treatment.

4 Shell & Dished end.

5 Bung and Bung welding.

6 Foot ring welding.

7 Internal examination before closing in operation.

8 Longitudinal & Circumferential welding.

9 Serial No Stamping.

10 (v) Radiography/X-Ray examination for welds.

Longitudinal & Circumferential.

(vi) Bung Threads.

(vii) Gap Threads.

(viii) Leakage at valve thread joint.

12 Finishing and Painting.

13 Hydrostatic test at 45 kg/cm2.

From Date : ______ to Date :______ .

14 Pneumatic Test at 45 kg/cm2.

15 Acceptance Test.

(vii) Cylinder No. :

(viii) Burst Pressure :

(ix) Nominal Hoop Stress.:

(x) Cylinder burst without fragmentation.

(xi) Total Stretch.

(xii) Permanent.

Operator’s manuals shall be supplied with each cylinder.

Mode of Measurement & Payment:

The payment shall be made on No of cylinder supplied as per Schedule-B.

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GENERAL CONDITIONS:

(1) 10% of the gross bill amount shall be kept in deposit from each running

bill till satisfactory testing in required work and commissioning the whole

(2) Labour cess shall be deducted as per prevailing rules.

(3) The Agency have to follow the rules prescribed by The Govt. for GST and

to pay the GST as per the prevailing rules applicable as per guide line of

(4) GST Will be paid Extra as Per CE Letter No. Tech cell / GST / Revise /

As per Provision Laid down in Govt. of Gujarat Circular No. GEN-2010-595(6) MI

Cell (K-1) det: 29th April 2011) and Notification of industries and mines Department

Gandhinagar dated 18 june 2016 the royalty will be deducted from the bill of work.

Excess Payment Recovery Clause

The amount recoverable from the contractor by the GWSSB on any account shall be

liable to be recovered from the amount payable to the contractor suppliers under this clause.

I HERE BY DECLARE THAT I HAVE MADE MAY SELF THROUGHLY

CONVENANTS WITH THE LOCAL CONSITIONS REGARDING THE AVAILABILITY OF ALL

MATERIALS AND LABOUR ON BASED OF WHICH I HAVE QUOTED RATES FOR THIS

THE SPECIFICATIONS AND NATURE OF THIS WORK HAVE BEEN CAREFULLY

STUDIED BY ME BEFORE SUBMITTING THE TENDER.

S SIGNATURE OF CONTRACTOR EXECUTIVE ENGINEER