Rehabilitation of earthing system including Surge Protection device over South section of Sealdah division.

18% HAS BEEN SHOWN IN ITEM BREAKUP SEPARATELY.

NON-SCHEDULE/SOR ITEM vide SL. NO. 1 to 45 GIVEN IN SCHEDULE OF WORK. GST @ 18% HAS

BEEN SHOWN IN ITEM BREAKUP SEPARATELY.

S No. Item Description of Item Unit Qty Rate Amount

strand copper power wire as per IS:

694:2010 orlatest, 84 conductor each dia

0.30mm +/- 0.01 with insulation thickness

of 0.8 mm and nominal conductor

resistance of 3.3 ohms/km and test

parameters as per RDSO Specn.No.IRS:S-

76/89 (Amnd.3) or latest. Color of the wire

which is required will be specified by the

Engineer in-charge Inspection: Consignee"

SEALDAH DIVISION-S AND T/EASTERN RLY

strand copper power wire as per IS:

694:2010 or latest, 140 conductor each dia

0.30mm +/- 0.01 with insulation thickness

of 1.0 mm and nominal conductor

resistance of 1.91 ohms/km and test

parameters as per RDSO Specn.No.IRS:S-

76/89 (Amnd.3) or latest. Color of the wire

which is required will be specified by the

Engineer in-charge Inspection: Consignee"

strand copper power wire as per

IS:694:2010 or latest, 1 2 6 conductor each

dia 0.40mm +/- 0.01 with insulation

thickness of 1.0 mm and nominal conductor

resistance of 1.21 ohms/km and test

parameters as per RDSO Specn.No.IRS:S-

76/89(Amnd.3) or latest.Colour of the wire

which is required will be specified by the

Engineer incharge. Inspection: Consignee"

strand copper power wire as per

IS:694:2010 or latest, 276 conductor each

dia 0.40mm +/- 0.01 with insulation

thickness of 1.2 mm and nominal conductor

resistance of 0.554 ohms/km and test

parameters as per RDSO Specn.No.IRS:S-

76/89(Amnd.3) or latest.Colour of the wire

which is required will be specified by the

Engineer incharge. Inspection: Consignee"

multi strand copper power wire as per

IS:694:2010 or latest, Inspection:

6 6 "Supply of Tinned Copper LUGs for fitting in Numbers 2000.00 1.27 2540.00

Cable Size: 2.5 sqmm, Barrel Inner-dia:

2.4mm, Barrel Outter-Dia: 3.90mm, Barrel

Length: 8mm, Stud Hole Center-dia:

5.2mm, Palm Width: 9mm, Thickness: 1.3-

1.5mm, Lug Length: 17-19mm,Thimble

Type: Ring. Inspection: Consignee"

7 7 "Supply of Tinned Copper LUGs for fitting in Numbers 800.00 2.54 2032.00

Cable Size: 6 sqmm, Barrel Inner-dia:

4.0mm, Barrel Outter-Dia: 5.5mm, Barrel

Length: 10mm, Stud Hole Center-dia:

8.2mm, Palm Width: 10.0mm, Thickness:

1.3-1.5mm, Lug Length: 24mm,Thimble

Type: Ring. Inspection: Consignee"

8 8 "Supply of Tinned Copper LUGs for fitting Numbers 1000.00 3.39 3390.00

Cable Size: 10sqmm, Barrel Inner-dia:

4.7mm, Barrel Outter-Dia: 7.10mm, Barrel

Length: 10mm, Stud Hole Center-dia:

9.9mm, Palm Width: 12.6mm, Thickness:

1.8, Lug Length: 27mm,Thimble Type: Ring.

Inspection: Consignee"

9 9 "Supply of Tinned Copper LUGs for fitting in Numbers 546.00 4.36 2380.56

Cable Size: 16 sqmm, Barrel Inner-dia:

6.4mm, Barrel Outter-Dia: 8.0mm, Barrel

Length: 12.2mm, Stud Hole Center-dia:

10mm, Palm Width: 12.6mm, Thickness:

1.8, Lug Length: 28-30mm,Thimble Type:

Ring. Inspection: Consignee"

10 10 "Supply of Tinned Copper LUGs for fitting in Numbers 300.00 8.35 2505.00

Cable Size: 35 sqmm, Barrel Inner-dia:13

mm, Barrel Outter-Dia: 17 mm, Barrel

Length: 12.2mm, Stud Hole Center-dia:

10mm, Palm Width: 12.6mm, Thickness:

1.8, Lug Length: 28-30 mm,Thimble Type:

Ring. Inspection: Consignee"

SEALDAH DIVISION-S AND T/EASTERN RLY

Inspection: Consignee "

mm. Inspection: Consignee"

13 13 "Supply of cement concrete enclosure for Numbers 800.00 483.90 387120.00

earth electrodes as per Drg No. S&T/C-

36(NKG) & PCSTE/ER's Drg No. SI/TYP/ 0097

dated 25.03.25 or latest. Inspection:

Enhancement Material ) as per Para 8.2 of

RDSO Spn. No. RDSO/SPN/197 or latest

Note :- Minimum weight of Bag should be of

10 KG. Inspection: Consignee "

15 15 "Supply of Nut Bolts, Washer (Stainless Set 3000.00 20.00 60000.00

Steel) as per the site requirement (One set

consists of 1 Nut, 1Bolt , 2 washer & 2

spring washer) Note :- Hex Nuts, bolts and

washers of size 5/16"" Inspection:

16 16 Supply of earth electrode mild steel Numbers 500.00 1000.00 500000.00

galvanized, light class, IS:1239(PART-I)-

1979.earth electrode pipe should be with 3

mm thick, 50 mm dia and

perforated(staggered),5 mm dia holes, 2

nos per 305 mm length. Earth pipe should

include CI threaded cap. Materials to be

procured and designed as per Drg No.

SI/TYP/0097 dated 25.03.25 Inspection: -

latest) of size 35 mm x 6 mm. To supplied

in length of minimum 5 mtr as per Drg No.

SI/TYP/0097 dated 25.03.25 (or latest).

Inspection: RITES."

18 18 Fixing of earth electrode including laying Numbers 500.00 983.90 491950.00

and installation of MS flat of size 35 mm x 6

mm with length 5 mtr or as per extant

practice of Eastern Railway. As per

PCSTE/ER'S DRG. NO. SI/TYP/0097 dated

25.03.2025 or latest. for apparatus cases,

signal post & other equipment as per

instruction of site engineer. Provision for

fixing MS flat at apparatus cases/ signal

post/other equipment should be made by

the firm at site. Where required necessary

holes to be drilled on the MS Flat . Full

threaded bolts of 10 mm dia and length 40

mm should be welded in the apparatus

cases in such way that the MS flat at

apparatus case end can be fixed from

outside or from inside (bolts of 10 mm dia

and length 40 mm should be supplied by

the contructor). Welding arrangement with

accessories and welding materials should

be arranged by the contractor for fixing of

bolts at equipment end where required as

per instruction of site engineer. All

hardware and other miscellaneous

materials required for installation to be

supplied by the contractor except earth

electrodes and MS flat. Sig. Cable as

provided by Railway is also to be laid and

terminated on Earth Electrode and to GI

Wire/GI Flat in Location Box.

SEALDAH DIVISION-S AND T/EASTERN RLY

19 19 "Welding for jointing MS flat width of Numbers 1000.00 295.76 295760.00

different lengths strips connecting from

Earth to location boxes/Signal post/Signal

Unit for better continuity. Prior approval of

welding material to be taken from Engineer

In charge. Note:- 'NO.' in Unit Column

indicates 'Each Weld'"

20 20 Supply of Medium class GI pipes 50 mm dia Metre 550.00 342.37 188303.50

(3.6 mm thickness) as per IS 1239 (Part 1):

2004 or Latest Inspection: Consignee

21 21 "Supply of 'ELBOW'- BENDS to suit GI pipes Numbers 100.00 90.00 9000.00

50 mm dia (3.6 mm thickness) Inspection:

22 22 "Supply of basic material to construct unit Numbers 600.00 4000.00 2400000.00

Maintenance free earth as per RDSO Specs.

No RDSO/SPN/197 Ver.1.0 or latest and

conforming to RDSO Drg. No. SDO / RDSO/

E&B/001 or Latest. Necessary testing

certificate of UL, IEC to be produced. It

consist of following: (a) Copper bonded

steel electrode of 3.0 m long, 17.2 mm dia

with copper bonding thickness of minimum

macrons and UL listed and marked = 1 no.

Inspection: RITES"

23 23 "Installation of Unit Maintenance Free Earth Set 600.00 3000.00 1800000.00

. It includes ( i ) Digging the earth to the

required depth. (ii) Insertion of electrode.

(iii) Filling of earth enhancing compound

(Approx.30 Kg) (iv) Provision of exothermic

weld connections to copper Strip to the

earth electrodes. (v) This also includes

supply of CC cover 1.5 ft x 1.5 ft. 1 ft wall

thickness 2 inch with cover 3-inch

thickness. All material tools and features

required for weld will be arranged by

contractor. Inspection: Consignee. "

interconnecting earth electrodes..

Inspection: Consignee "

25 25 "Installation of GI Tape (50 X 6 mm) for Numbers 1000.00 80.00 80000.00

connecting Main earth pit to other earth pit

in case of loop earth Note: 'No' in the unit

column indicates 'per pair of earth pit'"

26 26 "Supply of Permanently Lubricated HDPE Kilometre 1.00 73086.44 73086.44

Telecom duct of size 50/42 mm and

accessories as per latest Specification TEC

GR No. GR/TX/CDS-008/03/March 11 with

latest amendment or Latest in length of

1000 mtrs/roll. Duct to besupplied from TEC

approved sources. . For each km. Of HDPE

duct following items are to be supplied (a)

end plugs-2 nos. (b) cable sealing plugs - 2

nos. (c) plastic couplers slip fit/push fit type-

2 nos. (d) end plugs to beprovided along

with drum 2 nos. (e) Colour- GREEN

Inspection: Consignee"

27 27 "Supply of ISI marked XLPE insulated PVC Metre 1400.00 235.00 329000.00

outer sheathed, FR-LSH, armoured with

aluminium conductor cable1100V grade of

size 2 core 70sq.mm as per IS no.7098

(part-1) 1988 or with latest amendment.

Inspection: RDSO"

28 28 "Supply and Execution of Exothermic Welds Numbers 500.00 418.00 209000.00

for more than 16 sqmm wire. This includes

Welding Kit , Welding Powder, Mould and

other necessary materials. Note- No. in unit

column indicates per welding. Inspection:

SEALDAH DIVISION-S AND T/EASTERN RLY

29 29 "Supply and Execution of Exothermic Welds Numbers 1200.00 316.00 379200.00

for upto 16 sqmm wire. This includes

Welding Kit , Welding Powder, Mould and

other necessary materials. Note- No. in unit

column indicates per welding. Inspection:

30 30 "Installation of MEEB/SEEB/BRC with the Numbers 2500.00 25.00 62500.00

insulators (As per the instruction of Site

Engineer). Fitting materials & Insulator

(Dough Moulding Compound Conical type of

different Size) as per the site requirement

to be supplied by the contractor. Note: 'No'

in the unit column indicates 'per insulator' "

31 31 "Segregation of Clean & Dirty wire ( Earth Job 50.00 12000.00 600000.00

wire, wire from unprotected sources,etc.) in

Relay Room and IPS Room. This includes

supply of PVC pipe & PVC Trough of

different sizes & fixing of it along with

laying of dirty cable through PVC

pipe/Trough. It also includes proper writing

of "" DIRTY CABLE"" & "" CLEAN CABLE"" on

the cable tray or PVC Pipe. Note- Job. in unit

column indicates per Relay Room & IPS

32 32 "Segregation of Clean & Dirty wire ( Earth Job 50.00 3000.00 150000.00

wire, wire from unprotected sources,etc.) in

SM Room. This includes supply of PVC pipe

& PVC Trough of different sizes & fixing of it

along with laying of dirty cable through PVC

pipe/Trough. It also includes proper writing

of "" DIRTY CABLE"" & "" CLEAN CABLE"" on

the cable tray or PVC Pipe. Note- Job. in unit

column indicates per SM Room."

33 33 "Carrying out wiring of potential free Numbers 300.00 228.81 68643.00

contact of SPD with Datalogger via Tag

Block and validation in Datalogger. These

work includes the releasing of existing

unused wires and wiring the relays using

16/0.2 mm copper wire as per RDSO Spec.

Wire to be procured from RDSO's approved

source Inspection : Consignee Note: - (i)

wire to be procured from RDSO's approved

source only. All required material like wire,

soldering material, paint etc. to be supplied

by the contractor for execution of the work.

(ii)'No' in the unit column indicates 'Per

34 34 "Segregation of Earth wire from equipment Job 620.00 250.00 155000.00

wiring in Location Box and Bunching. PVC

Channels/ troughs to be provided and fixed

Note- Job. in unit column indicates per

SEALDAH DIVISION-S AND T/EASTERN RLY

35 35 "Excavation of cable trench as per cable cum 720.00 207.63 149493.60

route plan, 1.2 Mtr. deep and of 0.3 Mtr. to

0.6 Mtr. wide at bottom without brick as per

DRG. NO. S&T/C-40(NKG), SK/4/95/NKG,

SK/8/95/NKG. or latest alongside the track

in all kinds of soil, conforming to distances

as per cable route plan and refilling. This

work includes clearing of route from bushes

etc. The work shall be done as per the

extant practice on Eastern Railway and

instructions of Railway Engineer at site.

Note:-(a)for all trenches from distant signal

to home signal and to relay room, the

minimum headway above the uppermost

cable in the trench should be 600mm. If

due to a large no. Of cables headway is not

available, 4"" of 1:2:4 concreting should be

done. Note:-(b-1) payment will be made as

per actual work done on pro-rata basis, if

required depth is not available at site. (b-2)

if the depth of trench is not uniform in a

span of 100 mtr. Or shorter lengths if site

condition demands along the cable run,

minimum depth will be taken for that

particular stretch for payment. "

36 36 Closing of Cable Entry Holes by concreting Job 830.00 100.00 83000.00

permanently. The materials required for the

work i.e cement ,Sand,1/4'Stone chips etc.

will be supplied by the contractor.

37 37 Placing of DWC HDPE/RCC/GI pipes along RMT 500.00 26.27 13135.00

with collars in trenches at places near track

and road, crossings, platform cuttings etc.

38 38 "Construction of Concreate Path Way (500 Metre 1500.00 2165.00 3247500.00

mm Width) from One Earth pit to the

consequtive Earth Pit. & Painting of Earth

Pit As well as concreate path way. This

includes supply of Bricks, Cement. Sand,

Stone chip & Paint of good quality. "

39 39 "Fixing of Down Conductor through HDPE Numbers 50.00 500.00 25000.00

Pipe for A'- Class Surge Arrestor. HDPE pipe

will be supplied by Rly. Note :- No. in Unit

column indicates per Arrestor."

40 40 Increasing the height of 'A' Class Surge Numbers 50.00 2000.00 100000.00

Arrestor (3 Mtrs. above of VHF Antena).

Dismetalling of existing 'A' Class Surge

Arrestor & refixing as per the instruction of

Rly. site engineer. All the item required for

cement concreating & refixing will be

supplied by the contractor.

41 41 "Installation of GI Wire in location Box and Numbers 500.00 245.00 122500.00

soldering / Trinkering of cable armour. This

includes Releasing of existing armour

connection from existing GI wire and

replacement with new GI wire and

resoldering of armour with New GI wire.

Note: 6 SWG (4mm dia) GI wire and

soldering material to be supplied by the

42 42 "Supply of Surge Protection Device (SPD) , Numbers 80.00 2204.72 176377.60

class-II,C-TYPE for 24-60 VOLT DC as per

RDSO Spec No. RDSO/SPN/TC/215/ 2018

Ver.2.0 (or latest) Class No. 3.12.3 . Note :-

SPD should be Indicative type. Inspection :

SEALDAH DIVISION-S AND T/EASTERN RLY

43 43 "Supply of Handheld Digital Earth Clamp Numbers 2.00 80474.58 160949.16

Tester for clamp on earth/ground resistance

measurement up to 1000 ohms. Accuracy

current leakage up to 20A. No spines

required for measurement Model - DECT-2

or equivalent / higher version . Make-

Motwane/ Stanlay/ Fluke/ Megger.Item to be

supplied after successful demonstration

and Approval of Railway. Inspection:

EARTH AREA AND OTHER MISCLLANIOUS

WORKS TO BE EXECUTED. THIS JOB

INCLUDES CUTTING AND WELDING OF MS

GRILL , DRILLING, CEMENT CONCRETING.

THIS WORK TO BE EXECUTED IN ONE RING

EARTH AREA AS PER THE INSTRUCTION OF

RAILWAY SITE ENGINEER(S). ALL THE

MATERIALS (i.e SAND, CEMENT, STONE CHIP

ETC) & MANPOWER TO BE SUPPLIED &

PROVIDED BY THE CONTRACTOR EXCEPT

MS GRILL FENCE . As per 'Typical fencing

for earthing S&T installation' Annexure-III

(c) of document no. RDSO-

Sig0SPD(PROJ)/1/2020 ver 0.0 dtd 01/01/25.

Note: Per foundation of fence would be of

250mm X 250mm with 300mm minimum

45 45 "Supply of Fencing frame for ring earth Metre 1000.00 2540.00 2540000.00

area, location box and other S&T premises.

(Height of fence would be of 1.5m)

Inspection : RITES"