REVAMPING OF CP SYSTEM AT HPCL SOLAPUR

DISMANTLING AND RELAYING — "Desmantling pevar bock manually/ by mechanical means including stacking of serviceable materials at a designated site (approx. 100mtrs away or as per site incharge advise within the plant), and same material will be used after the completion of complete requried coating, cathodic protection revamp work , and shallbe relaid of pervar block with 50mm sanddust bed after the CP and coating work completation.Note : 1) Payment will be made for removal and relaying of pavers consider as one Unit of measure.2)The rates are applicable for all heights / depths and floors. Dismantling and relaying activity to be carried out carefuilly so that minimum damage to blocks, if any shortfall of blocks in relaying , the same needs to be arranged by Contractor without any additional cost. ( required scaffolding to be arranged by the Contractor without any extra cost."

DISMANTLING AND RELAYING — "Dismantling and Relaying of RCC (M 30) of specified nominal mix using 20mm and down size graded crushed stone aggregate in sub structure of all types e.g. trenches, culverts, manholes, pipe encasement, catchpits, drains, pits, etc.,including placing of concrete,supplying pockets,openings, recesses,chamfering wherever required etc., vibrating, tamping, curing andrendering if reqd. to give a smooth and even surface etc. all complete(excluding the cost of reinforcement, but including the cost of centringand shuttering)for all depths below and upto plinth level in any shape,position, thickness etc. all complete as specified and directed. Onlysteel shuttering will be used so as to obtain required finish. Theheight of shuttering shall not exceed 1.5 m per lift of concrete.M.sand is permitted based on meeting the acceptance criteria: 1:1.2 (1 cement: 1 sand: 2 grade stone aggregate 20 mm nominal size) or as per design mix ratio to meet M30 specification. Demolished RCC manually/ /mechanical means and disposal of unserviceable materials outside as per direction of Engineer-in- Charge.Note: for New RCC, Reinforcement cost will be paid separatly. for the dismentaling and refixing of railing on the top of mound shall be in this line item no separate cost shall be given to contractor for anchoring the railing after RCC work. ( required scaffolding to be arranged by the Contractor without any extra cost."

SUPPLYING & PLACING STEEL 2408-SOLAPUR LPG PLANT — Supplying and placing HYSD steel reinforcement of Grade 500 (TMT) conforming to IS 1786 in position for RCC worksincluding straightening, cutting, bending, placing in position andbinding with 16 SWG black soft annealed binding wire at everyintersection, supplying and placing appropriate cover block all completeincluding cleaning and making it free from oil, grease etc. complete-for all heights and depths and conforming to relevant IS code (Make: SAIL,TATA, JSW, ESSAR, VIZAG STEEL or approved equivalent make conforming to IS code) , Also include supply,weld and grauting of GI pipe in the top of mound if required. ( Required scaffolding to be arranged by the Contractor without any extra cost)

SAND EXCAVATION AND — "Sand excavation in the MSV comprising of three bullets till 7.4 mtr depth or as per site condition from the top of Mound and . Sand will be removed in sequence from outer bullet to inner bullet ensuring safety of the personnel working and also stability of the bullet. The excavation will be carried out partly manually and partly using JCB with a properly sized bucket after confirimg the stability will not disturb. Any shoring required to prevent sand from collapsing shall be part of the scope. The excavated sand shall be transported using tractor trolley to designated spot for storing till the time of the three bullets recoating is completed and the same sand will be transported back for backfilling. The backfilling shall be carried out layer by layer approximately 500mm and shall be compacted with hand compaction as per approved method statement. If removed sand is spoled or fall short, contractor will supply and backfilling by fresh river sand/machine sand of 30% of Excavated sand. ( Example Soil removed is 2600 M3, while filling it is found that used soil is 3997.5 M3 (65% reused), remaining 30 % (1845 m3) contractor has to supply new soil without any extra cost, remaining 5 % (307.5 M3) will be paid by HPCL for soil not for backfilling.).( Required scaffolding to be arranged by the Contractor without any extra cost)"

PROVIDING AND LAYING PCC — Providing and laying PLAIN CEMENT CONCRETE for all depths below and upto plinth level in foundations,drains,fillings, non-suspended floors, pavements & ramps or any other works etc.including the cost of position cement concrete of specified grade including the cost ofcentring and shuttering, tamping, ramming, vibrating,curing, in anyshape,position,thickness and finishing the top surface rough or smooth,etc. all complete as per directions of Engineer-in-charge. - All work upto plinth level. 1:4:8 (1 cement: 4 coarse sand : 8 crushed stone aggregate 40 mm nominal size).( Required scaffolding to be arranged by the Contractor without any extra cost)

SUPPLY & LAYING OF GEO — GEO TEXTILE SHEET Supply & Laying of TERRAM 1000 / NETLON SI-401 (thickness 1000micron) non woven geotextile material over fine sand as per HPCL standard drawing and as per tender specification and instruction of engineering incharge. Minimum lap of 300 mm is to be provided. Contractor to consider Overlap quantity no additional payment will be made.( Required scaffolding to be arranged by the Contractor without any extra cost)

SUPPLY & LAYING 1000 — Supply & laying 1000 micron UPVC Sheet( as per of approved make confirming to BIS-2076-1981 ,over sand bed. Job also includes providing appropriate lap of UPVC sheet on joints, fixing of UPVC sheet on tank surface as well as dyke wall by proper adhesive as per recommendation of manufacturer. NOTE:Water tight stitching of the joints incl adequate lapping (min 300mm) to be done as per tender specification and instruction of engineering incharge. Contractor to consider Overlap quantity no additional payment will be made.( Required scaffolding to be arranged by the Contractor without any extra cost)

SURFACE PREPARATION & — "Surface preparation of MSV surface using hand tool cleaning and/or high-pressure water jetting in line with the technical specification. Supply of low-viscosity, non-crystalline polyisobutylene based visco-elastic tape 1.5 mm +/-0.25 thickness & 100% solid polyurethane top layer (applied to a thickness of @500 µ considering 40% wastage factor or as suggested by vendor).The visco-elastic coating & polyurethane dual coating system shall comprise of the base corrosion protection layer of low-viscosity, non-crystalline, poly-isobutylene reinforced mesh tape of 1.5 mm thickness and a non-woven top layer suitable for top coating with spray/roller applied polyurethane coating with 500µ thickness as per tender specification and instruction of engineering inchargeApproved Vendors:A. VISCO-ELASTIC (THE BASE LAYER) STOPAQ by Seal for Life / Henkel/Canusa ME/Viscotaq by DensoB. POLYURETHANCE (THE TOP LAYER): Demech/Life Last/ Loctitie by Seal for Life/ Henkel/Sherwin-Williams"

REDESIGN WITH SOFTWARE — "Redesign with Software Modelling, :Cathodic Protection (CP) software modelling shall be carried out to ensure that the CP system is capable of providing adequate protection. The Elsyca CP model or Equivalent shall be used for software simulation.The simulation must incorporate the following parameters to achieve an accurate ICCP (Impressed Current Cathodic Protection) profile:1.Coating System – The new proposed coating to be applied on the mound shall be modelled.2.Soil Environment – The same corrosive sand conditions present in the mound shall be considered.3.Structural Material – Similar/same carbon steel properties shall be used for the MSV (Main Subsurface Vessel).4.Electrical Continuity – The MSV shall be modelled as electrically continuous with surrounding structures (not isolated).5.Soil Resistivity and Electrodes – Multi-layer soil resistivity shall be applied, with resistive electrodes included to account for voltage drop and current distribution in anode materials.6.Complex Geometry Capability – The model shall be capable of simulating linear MMO anodes, multiple vessels, and reinforced concrete within a single framework.7.Reference Electrodes – Permanent reference electrodes shall be added to simulate survey potentials and validate CP performance."

DESIGN, SIC OF — Design, Supply & Installation of multichannel TRU with rating 50V/50A & 50V/25A, Auto, AVCC/CVCC modes, single phase. There shall be 4 Nos. Cu/CuSO4 for each channel and facility shall be provided to select one out of four reference electrodes by means of a manually operated reference selector switch. Degree of Protection : IP-54. Indoor type as per tender specification and instruction of engineering incharge. The rates shall be inclusive of removal of old CP system incl.TRU and other assocuited parts of old CP system and supply, installation, foundation laying, erection and any other related works. Contractor to ensure that the erection and installation of CP system equipment and material should be carried out as per Industry / NACE standards. Before the start of the works, the Contractor shall submit Drawings and installation procedures for approval from TPIA / HPCL. CP System designapproval to be taken from HPCL before carrying out the job and post completion of the job two sets of design and drawings to be submitted. preffer make : Kristron/Raychem RPG/BSS tech