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| 1 | PCP Works (Group-D) Krishnagiri GA |
| 2 | Soil Resistivity and Chemical analysis |
| 3 | \\"Conducting \\"\\"Soil Resistivity Survey\\"\\" at anode bed location after ascertaining its suitability for installation of Anode Bed (dee p / shallow / distributed), as per the specification, approved procedures and instructions of Site Engineer /Engineer-in-Charge. Note : At each CP station location soil resistivity shall be measured upto 100 m depth for 3 plots, for selection of the anode bed f or the lowest resistivity plot.\\" |
| 4 | Soil Chemical analysis as per specification |
| 5 | Design |
| 6 | Design, Detailed Engineering for Permanent Cathodic Protection system as per the specification |
| 7 | \\"Transformer Rectifier Unit TRU\\" |
| 8 | \\"Supply, Installation,Testing & Commissioning of the below rated dual input (230 V AC & 48 V DC) type Cathodic Protection Smart Tra nsformer Rectifier Unit with built in GSM Modem, RTU and display unit of approved make, complete in all respects as given in the sp ecification and directions of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation: Transformer Rectifier Unit - 25V/25A , single phase or three phase, Air cooled, Indoor type with remote monitoring through Pipelin e’s SCADA facility.\\" |
| 9 | \\"Supply, Installation,Testing & Commissioning of the below rated input (230 V AC) type Cathodic Protection Smart Transformer Rectif ier Unit with built in GSM Modem, RTU and display unit of approved make, complete in all respects as given in the specification and directions of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation: Transformer Rectifier Unit - 25V/25A , single phase or three phase, Air cooled, Indoor type with remote monitoring through Pipelin e’s SCADA facility.\\" |
| 10 | Anode Ground Bed |
| 11 | Supply and Installation of Anode Ground Bed including terminating the cables in the AJB box with cable lugs, sealing material, layin g of cable, testing & commissioning of Anode Ground Bed with chain link fencing,etc. all complete with required material, excavation , backfilling etc. as per specification and directions of Site Engineer / Engineer-in—Charge. |
| 12 | Deep Well Type AGB |
| 13 | Deep well type anodeground bed using MMO tubular anode (16 mm dia. x 1000mm long) of each 5 A , minimum 8 to 10 Nos , with individua l anode tail cables of 1c x 10 sq mm KYNAR/HMWPE, unarmoured of minimum length to reach the anode junction box without any splicing , including calcined petroleum coke breeze of bulk density 900 kg/ m3. Depth of the Deep well shall be min 50mtr or as per design an d diameter of the MS casing pipe shall be min 250 mm. The anode shall be supplied complete with vent pipe and HDPE pipe shield for i nactive length . |
| 14 | Shallow Horizontal AGB |
| 15 | Horizontal Shallow type anodeground bed using MMO tubular anode (16 mm dia. x 1000mm long) of each 5 A , minimum 8 to 10 Nos , with individual anode tail cables of 1c x 10 sq mm KYNAR/HMWPE, unarmoured of minimum length to reach the anode junction box without any splicing , including calcined petroleum coke breeze of bulk density 900 kg/ m3. Depth of the Horizontal Shallowshall be min 1-6 mtr or as per design and Individual MMO anodes shall be supplied with sheet steel canisters prepacked with calcined petroleum coke breez e. |
| 16 | Junction Boxes |
| 17 | Supply,Installation & Testing of Junction Boxes of approved make, complete in all respects as given in the specification and directi ons of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation |
| 18 | \\"Anode Junction Box (weatherproof, IP-55) AJB\\" |
| 19 | \\"Cathode Junction box (weatherproof, IP-55) CJB \\" |
| 20 | Reference Electrode Junction Box-REJB (weatherproof, IP-55) |
| 21 | Test Station (TS) / Test Lead Point (TLP) |
| 22 | Supply, Installation & Testing of Test Station (TS) / Test Lead Point (TLP) of approved make, complete in all respects as given in t he specification and directions of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation |
| 23 | \\"Type H - for HT Line Crossing and SV, this TLP shall be vandal proof type and the size should be suitable to install solid state dc decoupling device(SSD) in it. There are two cables one of 1c x 6 sq mm and other of 1c x 25 sq mm from the pipeline into the TLP, o ne end of the 25 sq mm cable is connected to DC decoupling device and to the other connection of the device Zinc grounding Cell with 1c x 25 sq mm cable are connected for grounding the AC current, pin brazing connection encapsulation kit etc. Note: This type of TLP is already available at all HT line crossing location. The same shall be used for AC interference mitigation. In case the same is not in usable condition, these new H type TLP shall be installed.\\" |
| 24 | \\"Type A for Potential Measurement with minimum two cables of 1Cx06 Sq.mm Cu XLPE armoured Potential measurement cables, pin brazing connection encapsulation kit etc., Note: Possibility of using installed similar type TLP at the time of TCP will be explored first. If the condition of the existing si milar type TLP are not in usable condition, new one shall be installed. \\" |
| 25 | \\"Type A1 for Current Measurement with minimum four cables of 1Cx06 Sq.mm (2 nos) & 1Cx10 Sq.mm (2 nos) Cu XLPE armoured Current and Potential measurement cables, pin brazing connection encapsulation kit etc., Note: Possibility of using installed similar type TLP at the time of TCP will be explored first. If the condition of the existing si milar type TLP are not in usable condition, new one shall be installed. \\" |
| 26 | \\"Type B for Galvanic Anode to Pipe Connection with minimum two cables of 1Cx06 Sq.mm & 1Cx10 Sq.mm Cu XLPE Potential measurement ca ble & 1Cx10 Sq.mm Cu XLPE armoured galvanic anode connection, pin brazing connection encapsulation kit etc. Note: Possibility of using installed similar type TLP at the time of TCP will be explored first. If the condition of the existing si milar type TLP are not in usable condition, new one shall be installed. \\" |
| 27 | \\"Type F for Foreign Pipeline Crossing with minimum four cables including two cables of 1Cx6 Sq.mm Potential measurement cable & two cables of 1Cx25 Sq.mm armoured for bonding, pin brazing connection encapsulation kit etc., Note: Possibility of using installed similar type TLP at the time of TCP will be explored first. If the condition of the existing si milar type TLP are not in usable condition, new one shall be installed. \\" |
| 28 | \\"Type E for insulating joint with minimum four cables including two cables of 1Cx06 Sq.mm Cu XLPE armoured Potential measurement ca bles & two cables of 1Cx25 Sq.mm Cu XLPE armoured galvanic anode connection, pin brazing connection encapsulation kit etc., Note: Possibility of using installed similar type TLP at the time of TCP will be explored first. If the condition of the existing si milar type TLP are not in usable condition, new one shall be installed. \\" |
| 29 | \\"Type D TLP with 1 no. 20 kg Mg anode. Note: Possibility of using installed similar type TLP at the time of TCP will be explored first. If the condition of the existing si milar type TLP are not in usable condition, new one shall be installed. However, Mg anodes shall be installed everywhere.\\" |
| 30 | \\"Type D for Cased Crossing with minimum four cables including two cables of 1Cx06 Sq.mm Cu XLPE Potential measurement cable & two ca bles of 1Cx10 Sq.mm Cu XLPE armoured anode connection, pin brazing connection encapsulation kit etc. \\" |
| 31 | Supply & Installation of pre-packed Mg Anode (20.0 Kg) with one cable including 1Cx10 Sq.mm Unarmoured cable (with sufficient length ) & encapsulation kit for cable connection termination of Anode tail cable in the TLP etc. complete in all respects as per direction of Engineer-In-Charge. |
| 32 | Polarization Coupon |
| 33 | Supply Installation,Testing of Polarization Coupons of approved make, complete in all respects as given in the specification and dir ections of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation |
| 34 | Polarization Coupons with two cables of 1c x 6 sq mm and 1c x 10 sq mm XLPE/PVC unarmoured of suitable length such as to reach Test Station connected to the coupon |
| 35 | Cables |
| 36 | \\"Supply, Laying, Installation,Testing & Commissioning of Cables of approved make with all its accessories to ensure trouble free ope ration Laying of anode header / cathode header / monitoring/ reference cell cables at a minimum depth of l meter and connection to the CP u nit / pipeline / half cell etc. The work includes excavation, installation, supply of all required materials such as sealing materia ls, lugs, PVC sleeve, repair materials etc., and carrying out all works such as exposing pipe, coating repair, cad welding / pin bra zing, backfilling etc.,; in all types of strata and soil (including rock) by making the trench, back filling the trench,cable termin ations, work complete in all respects including cost of all labour, material, tools etc. as per specification and instruction of sit e Engineer / Engineer—In—Charge and approved drawings. PCP - Cables shall be annealed high conductivity, stranded copper conductor, 650/1100V grade\\" |
| 37 | 1 core x 6 mm2 -Reference electrode, monitoring cable- XLPE insulated,PVC sheathed, un-armoured |
| 38 | \\"1 core x 35 mm2 -Anode & Cathode header Cable- XLPE insulated and PVC sheathed, armoured ( From TRU to AJB/CJB)\\" |
| 39 | \\"1 core x 25 mm2 - Cathode Cable- XLPE insulated and PVC sheathed armoured ( From pipeline to CJB)\\" |
| 40 | 3C X 25mm2 TR unit AC incomer cable-XLPE insulated and PVC sheathed, armoured |
| 41 | \\"2C x 6 mm2 - Reference electrode and monitoring cable ,XLPE insulated and PVC sheathed, armoured (From REJB to TRU)\\" |
| 42 | 1 core x 25 mm2 - Bonding, Earthing, HT line, etc- XLPE insulated, PVC sheathed, un-armoured |
| 43 | Permanent Reference Electrode |
| 44 | \\"Supply and Installation of Permanent Reference Electrodes of approved make with all its accessories to ensure trouble free operati on Installation of permanent half cells including connecting the cable in the Test Station etc. with cable lugs, sealing material, layi ng of cable, testing& commissioning of cell etc. all complete with required material, excavation, backfilling etc. as per specificat ions, recommendation of cell supplier and directions of Site Engineer / Engineer-in-Charge.\\" |
| 45 | Prepackaged Cu/CuSO4 electrode with chemical backfill and 1c x 6 mm2 XLPE/PVC cable, unarmoured of suitable length upto reference e lectrode junction box without any splicing |
| 46 | Thermit welding or Pin Brazing |
| 47 | \\"Supply & Installation of Thermit welding or Pin Brazing of approved make with all its accessories to ensure trouble free operation Installation of Thermit welding or Pin Brazing including connecting the cable to the P/L for all sizes (Upto 1C x 35mm2) etc. with cable lugs, sealing material, laying of cable, testing& commissioning, etc. all complete with required m aterial, excavation, backfilling etc. as per specifications, recommendation of cell supplier and directions of Site Engineer / Engin eer-in-Charge.\\" |
| 48 | Computerized Test Station with Readers |
| 49 | \\"Supply, Installation,Testing & Commissioning of Computerized Test Station of approved make, complete in all respects as given in th e specification and directions of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation Computerized Test Station comprising of GSM based digital data logger inside Test station unit along with reference cell.\\" |
| 50 | Supply of Computerized Test Station Reader of approved make, complete in all respects as given in the specification and directions o f Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation Computerized Test Station Reader |
| 51 | AC/HVDC INTERFERENCE STUDY |
| 52 | \\"AC/HVDC Interference study and preparation of bill of material for mitigation shall be carried out by a specialist agency having re levant experience of conducting/ designing proven mitigation systems by computer modelling. The AC interference study shall have to be completed within 4 months of the award of the contract to facilitate the implementation d uring construction phase. 3 months will be utilized for data collection and physical survey and rest 1 month shall be used for data interpretation and proposition of mitigation measures in software.The scope is as per tender specification. The work shall be comple ted in all respects including survey recommending mitigation measures & post mitigation survey. The work includes all tools, tackles ,consumables etc. all complete, required for survey / test as deemed necessary and as per the directions of the site engineer /Engin eer-in-Charge.The scope includes conducting AC/DC data logging at installed TLP's with AC corrosion coupons/Polarisation coupons for 24 hours.\\" |
| 53 | AC INTERFERENCE MITIGATION |
| 54 | Solid State Decoupler |
| 55 | \\"Supply, Installation &Testing of Solid State Diode Decoupling Device of approved make including required length of cable as per spe cifications for protection of MOVs/DGAVs and at HT line crossing locations Installation of solid state decoupling device as per specifications including terminating the cables in the Test Station box with ca ble lugs, sealing material, laying of cable, testing & commissioning of Zinc anodes etc.all complete with required material, excavat ion, backfilling etc. as per specification and directions of Site Engineer/ Engineer—in-Charge.\\" |
| 56 | \\"5KA Solid state decoupler of suitable rating with threshold voltage of +2V / -2V Note: SSD is already available at all HT line crossing location. The same shall be used for AC interference mitigation. In case the same is not in usable condition, these new SSD's shall be installed.\\" |
| 57 | Grounding Cell |
| 58 | \\"Supply and installation of Zn Grounding cells (with prepackaged backfill material)including required length of cable (minimum 10 m) of approved make & asper specification in accordance with dwg no. Installation of grounding cells including terminating the cables in theTLP box with cable lugs, sealing material, laying of cable, t esting &commissioning of grounding cell etc. all complete with required material, excavation, backfilling etc. as per specification and directions of Site Engineer / Engineer-in—Charge.\\" |
| 59 | \\"Pre-packaged Zinc grounding cell- 20 kg with 1c x 25 sq mm XLPE/PVC unarmoured cable terminated at TLP Note: Grounding Cell is already available at all HT line crossing location. The same shall be used for AC interference mitigation. I n case the same is not in usable condition, these new Grounding Cell's shall be installed.\\" |
| 60 | Zinc ribbon anode |
| 61 | AC Corrosion Coupons |
| 62 | Supply and Installation of AC Corrosion Coupons of approved make, complete in all respects as given in the specification and directi ons of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation |
| 63 | AC corrosion coupons with 1c x 6 sq mm XLPE/PVC unarmoured of suitable length such as to reach test station |
| 64 | Electrical Resistance (E.R.) Probes with Readers |
| 65 | Supply, Installation & Testing of E.R. Probes of approved make, complete in all respects as given in the specification and direction s of Site Engineer/ Engineer—in-Charge with all its accessories to ensure trouble free operation E.R. Probe for external corrosion m easurement of the pipeline |
| 66 | Supply of E.R. Probe Reader of approved make, complete in all respects as given in the specification and directions of Site Engineer / Engineer—in-Charge with all its accessories to ensure trouble free operation E.R. Probe Reader |
| 67 | Spares |
| 68 | Instruments, tools and tackles necessary for proper operation and maintenance of complete cathodic protection system and associated equipment |
| 69 | Spares ( all components of each type & rating ) for TR units necessary for proper operation and maintenance of TR units |
| 70 | Testing and Commissioning of permanent cathodic protection system |
| 71 | Post Commissioning Surveys |
| 72 | \\"Foreign Line Interference Study/Survey and Mitigation Conducting Mutual interference survey among the new and existing pipelines / facilities(foreign) by taking PSP survey of all the pip elines as per approved procedure to determine level of interference at different places along the pipeline and at point of crossing in common ROW including identifying points and providing the data/ recordin graphical form and carrying out all necessary work for m itigating the interference observed among the pipelines , including retesting the same to ensure efficacy of the remedial measures u ndertaken. The contractor shall submit a full final report with detailed PSP readings at all TLPsalong with graphs in six sets.The i tem should be complete in all respect including survey, work for mitigating the interference and post mitigating survey as per speci fications/directions of site engineer /Engineer—in—Charge.\\" |
| 73 | \\"Close Interval Potential Logging (CIPL) survey Conducting Close Interval ON/OFF Potential Logging Survey at an interval of 1 m over the buried line in the right of way including t he cost ofall expert manpower, transportation and camping facilities etc. to their employees, materials, test instruments, equipment s, consumables etc.,required for the survey as per the standard specifications, and approved procedures identification of areas/loca tions where coating repair is required along with suggestion for remedial measures etc. including the submission of draft reports in 2 sets and incorporation of owner' scomments in the draft report and final reports in 6 sets including one soft copy conta ining the survey results in the graphical as well as tabular forms computerised colour print and complete in all respects and direct ions of Site Engineer / Engineer—in-Charge.\\" |
| 74 | \\"Current Attenuation test (CAT) survey of the entire pipeline to check the condition of the coating and classify the health of the c oating, identify sections with high decibel loss which could be due to coating faults or shorted casings. Note : Will be done at interval of 50 mt\\" |
| 75 | \\"Direct current Voltage gradient (DCVG) at locations identified by CIPL survey to locate holidays, size the holidays and determine w hether the holidays are anodic or cathodic. Conducting Direct Current Voltage Gradient Survey over the buried line to identify / pin point the coating defects in the right of w ay including the cost of all expert manpower, transportation and camping facilities etc. to their employees, materials, test instrum ents, equipments, consumables etc., required for the survey as per the standard specifications and approved procedures, identificati on of areas/locations where coating repair is required along with suggestion for remedial measures etc. including the submission of draft reports in 2 sets and incorporation of owner's comments in the draft report and final reports in 6 sets including one soft cop y containing the survey results in the graphical as well as tabular forms computerised colourprint and complete in all respects as p er directions of Site Engineer /Engineer-in-Charge. Note : The item includes establishing the coating defect at specified locations by excavation in coordination with mainline contractor, who will arrange to repair the defects.\\" |
| 76 | \\"Coating conductance survey at every 10 km at Type A1 TLP and HDD locations Conducting \\"\\" Coating-Resistance Survey\\"\\" for calculation of effective coating resistance of the pipeline in ohms-sq.m. along the en tire pipeline and plotting on SEMILOG or X-Y GRAPH & submitting the reportin graphical form as well as soft copy as per Specificatio n / approved procedure and directions of Site Engineer / Engineer-in-Charge\\" |
| 77 | Bonding ( Alongwith Test Stations ) |
| 78 | Bonding shall be done at IJ locations as per requirement |
| 79 | \\"Survey & Identification of Land for AGB Applicable only for Horizontal Shallow type anodeground bed \\" |
| 80 | \\"Survey & Identification of Land for AGB Applicable if Land is not available within the existing CGS/CNG Stations (Includes liasoning with the Land Owner , concerned govt authority , feasibility wrt TRU installed in the CGS/OLS location , Pipelin e ) (Shall not include - soil resistivity survey as its covered in the beginning , Land Acqusition shall be done only after liasioning w ith the Owner , checking the feasabilty wrt TRU installed/tobe installed in the CGS/OLS location , Pipeline)\\" |
| 81 | *Vendor to note that the scope shall also include Land acquisition of Anode Bed including anode header cable route land upto CP Stat ion in the name of IOCL by bidder. The reimbursement of Land acquisition shall be made by IOCL on submission of original documents. -- Applicable if Land is not available within the existing CGS/CNG Stations |
| 82 | Supply & Installation of Spark Gap Arrester for Insulating Joint complete in all respects as per direction of Engineer-In-Charge in cluding the cost of all labour, materials, tools and tackles etc. |
| 83 | Monitoring |
| 84 | \\"Supply and commissioning of CP monitoring system including measuring, recording and submitting the cathodic protection readings alo ng the entire pipeline by repeated adjustments of the settings of the CP TRU units etc as per specifications for achieving full/maxi mum protection of all the stretches as per the criteria of protection mentioned in the specifications. Measuring the relevant readin gs at the cathodic protection stations and \\"\\"pipe to soil potential\\"\\" readings at all the test lead locations along the pipeline inc luding the CP station parameters like current(AC/DC), voltage(AC/DC), circuit resistance, battery voltage/current etc.,preparing and submitting pipe to soil potential profile, graphs and other data pertaining to the cathodic protection of the pipeline, job complet e in all respects as perspeclfication and instructions of Site Engineer/Engineer-in-Charge, including cost of all labour, instrument s and services rendered. Note : CP monitoring system including measuring, recording and submitting the cathodic protection readings along the entire pipeline by repeated adjustments of the settings of the CP TRU units etc as per specifications for achieving full/maximum protection of all the stretches as per the criteria of protection mentioned in the specifications. Shall be done quaterly/as per instructions of the E IC \\" |
| 85 | Final Acceptance/Handover |
| 86 | Final Commissioning of CP system Final Commissioning of the impressed current cathodic protection system for the mainline for achiev ing full protection as per protection criteria as mentioned in the specifications through repeated adjustments of the CP units after installation of galvanic anodes for hot spot protection and mitigation of AC/ DC interference, if any and submission of the resulta nt data to the owner and testing, measuring, recording and submitting all these data once again after the lapse of a period as per s pecifications / directions of the Site engineer /Engineer-in-Charge, including the cost of all labour tools and materials as require d, complete in all respect. |
| 87 | Supply and Installation of Cu/CuSo4 portable reference cell Please Enable Macros to View BoQ information |
