Reply to bidder's queries are enclosed herewith as Annexure-I.

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1 CORRIGENDUM #1 for Date: Owner : GNGPL Sl. No. Description Volume Page No. Clause / Para / Section Amendment / Addition / Modification / Deletion 1 Last date and time for submission of bid I of II Modification Date and time for submission of bid for subject tender stands modified to: "Upto 1500 hrs. (IST) on " Due Date & Time stated in cut-out slip shall stand modified to the above extent. 2 Date and time of opening of Un-priced Bids at MECON Limited, Delhi I of II Modification Date and time of opening of Un-priced Bids for subject tender stands modified to: "At 1600 hrs. (IST) on " 3 LIST OF VENDORS FOR BOUGHT-OUT ITEMS II of II 126, 127 of 500 VII)A,VII)B,VII)C Modification Vendor list for SS tube, SS tube fittings & SS valves & manifolds is modified to :- 1) M/s Parker (USA)/ M/s Swagelok (USA)/ M/s Hoke/ M/s SSP SS fittings 2) M/s Sandvik, Sweden, M/s Tubacex SS tubes 3) M/s Parker, M/s Swagelok SS valves 4 Reply to Bidder's Queries-I Clarifications Reply to bidder's queries are enclosed herewith as Annexure-I. Note: Any addendum/corrigendum/clarifications shall be integral part of the Bidding Documents and shall be submitted by bidders duly signed & stamped in their bid. Dr. P. K. Sharma DGM (Contracts) MECON, Delhi Page 1 of 1

2 1 Bid Due date Page 4 of 21. Extension of bid due date You are rwquested to please extend the bid due date for one week atleast. Refer Corr. #1. 2 Section IV Page 15 of 500 Size of Skid It is not possible to accommodate the twin stream decomression skid in 3mtr Bidder to submit skid GAD for review / x 2mtr, kinldy confirm approval & shall be dealt during detail engg. 3 Technical Specification of CNG Decompression Skid Page No.16 Online Solar Panel is required for EVC & meter Please confirm local control panel is required for heater & 1 no. of online solar panel is required for EVC & meter. Also provide technical specification of Solar panel. 4 Sli Salient Points Page No. 18 Heater shall hllbe automatically started if temperature Automatic Switch hon & OFF of electric heater will depend don outlet drops below 15 deg C & shall be temperature of the skid or as per the heater vessel temperature. As per our automatically closed if it exceeds beyond 35 deg C understanding the given condition of heater ON/OFF is indicating the temperature of heater vessel.kindly Confirm the philosophy. 5 Salient Points Page No. 18 Outlet temperatures at each stage are to be displayed in the locally mounted control panel. As per our understanding separate controller is required to display the temperature at each stage. Local Control Panel is required for heater. Solar panels as per sizing calculation shall be provided for the instruments available in the skid. Datasheet of solar panel to be submitted by bidder for review / approval. Solar panel system shall be suitable for hazardous area. Min. outlet gas temperature of the skid shall be 15 Deg.C. However Heater shall be automatically started if temperature of gas drops below 15 deg C & shall be automatically stopped if it exceeds beyond 35 deg C. Bidder's understanding is correct. Rest 6 Salient Points Page No. 18 Gas filtration system with 100 % of maximum flow capacity shall be used to remove dust particles less than 25 micron and to remove condensate if any Confirm if Y Strainer can be use in place of filter as it is more cost effective. 7 Piping Material Specification Page No. 42 MOC Of filter & Heater Vessel Please confirm the MOC of filter/strainer or Heater Vessel as it is not given in technical specification 8 Technical Specification of PCV & SSV Page No. 60 Confirguration OF PCV & SSV Please confirm the configuration of regulators at primary & secondary stages, separate SSV is required at both stages or Inbuilt SSV with Active Monitor is acceptable. However Gas filtration system with 100 % of maximum flow capacity shall be used to remove dust particles more than 5 micron and to remove condensate if any. Successful bidder to submit datasheet for review/approval during detail engineering. However filter internal element shall be of SS. PCV & SSV shall be separate at both the stages as indicated in P&ID. PCV with integral SSV is not acceptable. 9 Datasheet of PCV & SSV Page NO.100 Rating of PCV & SSV 2500# PCV & SSV is required at first stage reduction as per datsheet of PCV & SSV but as per general practice 1500# PCV & SSV is sufficient for Ist stage, and it meets technical requirement & well accepted by other CGDs also. 10 Annexure V List Of Vendors Page No. 125 Approved make of RPD Meter Please accept Metreg, Germany as approved make for RPD meter Page 1 of 9

3 11 Annexure V List Of Vendors Page No. 205 Approved make of SS Ball Valve Please accept Hy lok/ssp as approved make for High Pressure SS ball valve (Tube end). Hylok make SS ball valve are not acceptable. SS fittings, SS tubes & SS valves shall be procured from bl below mentioned vendors only : 1) M/s Parker (USA)/ M/s Swagelok (USA)/ M/s Hoke/ M/s SSP SS fittings 2) M/s Sandvik, Sweden, M/s Tubacex SS tubes 3) M/s Parker, M/s Swagelok SS valves Rest, condition Prevails. 12 Annexure V List Of Vendors Page No. 205 Approved make of Ball Valve Please accept Flowchem & Hina as approved make for ball valve. 13 Annexure V List Of Vendors Page No. 205 Approved make of Safety Valve Please accept Leser as approved make for Safety Valve. 14 Volume II of II Page No. 4 Erection, Commissioning, performance testing, on site training to O&M personnal includiong hook up with existing pipelines and all other related works for Please confirm if only supervision is required at site for commissiong, performance testing & hook up with existing pipelines of 450SCMH CNG Decompression Skid in bidders scope commissioning & performance testing of 450SCMH CNG Decompression Skid Technical specifications for PCV & SSV Technical specifications for PCV & SSV 61/500 61/500 The self actuating Pressure regulating valve shall be designed as per EN334 and Pressure Equipment Directive PED 97/23/EC covering the production quality assurance The Slam shut valve shall be designed as per EN14382 and Pressure Equipment Directive PED 97/23/EC covering the production quality assurance. We understand that EN standard is not applicable for 1st stage PCV & SSV as these are valves operating with Pressure upto 250 Barg & EN standard deals with valves operating with pressure upto 100 Barg. Kindly confirm our understanding id correct. Bidder's understanding is correct. Rest TG datasheet 99/500 Process ocessconn:2500# Falnged TG datasheet 99/500 Process Conn: 300# & 150# Flanged Skid inlet connection upto 1t stage regulator is made of high pressure tubing & fittings. Thus flanged thermowell cant be installed. Please confirm acceptance of thermowell of ¾" NPT connection. Line size in 300 & 150# section of skids is only 1" & 2". Thus 1½" flanged thermowell is not suitable. Please confirm acceptance of thermowell of ¾" NPT connection. Will be dealt during detail engg. Will be dealt during detail engg. Page 2 of 9

4 19 EVC comes with inbuilt pressure & temp sensor. Thus external P&ID 112/500 Pressuretransmitter & RTD are shownfor EVC pressuretransmitter & temp elemnt are not required. Kindly confirm same. Confirmed, if EVC is with inbuilt pressure & temperature sensor. Rest, Condition Prevails. 20 P&ID 112/500 Filter is shown at inlet of skid We understand that Filter shown at inlet of skid is high pressure miniature filter. Thus, technical Specification: MEC/TS/05/62/017, Rev 1 is not applicable for such filter. Confirmed. Rest, Condition Prevails. 21 Approved vendor list for Ball valve 130/500 FLOWCHEM/PETRO make ball valves are approved by GAIL, EIL & all CGDs. Kindly accept same for this tender. 22 Approved vendor list for DPG 126/500 Hirlekar DPG are approved in all major CGD like GSPC,GSPL,IGL,Gail etc. Kindly accept the same in this tender 23 Testing & inspection: 6.2 a) 65/ % radiography shall be carried out on all casting Inspection & Testing for Ball Valves a 278/500 We understand that, for 150# Radiography is NIL. For 300# Radiography is required above 16". Kindly confirm our understanding is correct. Refer Technical Specification. Rest, Condition Prevails. Inspection & Testing for Check Valves c 309/ Power supply VOLUME II OF II Kindly confirm availability of 3 phase power supply at site. Page 3 of 9

5 27 Inspection & testing VOLUME II OF II We understand that EN 3.1 Type inspection is applicable for CNG skid. Kindly confirm our understanding is correct. 28 Volume I of II. 3.0 Completion Schedule: Page No. 5 of Completion Schedule: Delivery on FOT (site basis) is to be made within 10(ten) weeks and erection to be completed within 12 (twelve) weeks, from the date of written intimation/ Release order. Kindly accept delivery 16 weeks FOT Site and erection to be completed within 18 (twelve) weeks, from the date of written intimation/ Release order. 29 Volume I of II. 3.0 Completion Schedule: Page No. 26 of Evaluation and Comparison of Bid: We understand that evaluation of the Bid does not include the AMC Evaluation shall be done on overall basis (i.e. for charges to arrive at L1. Please clarify. complete scope of work) and order shall be placed at lowest cost to GNGPL. Evaluation shall include charges for incedental services which includes Maintenance. Refer Clause no of ITB. 30 Volume II of II. Design, detail engineering, manufacturing, assembly, For CNG skidhook up with existing line any site Man power will be Complete manpower required to comply the MATERIAL REQUISITION Item 1a Page No. 4 of 500 provided by purchaser for any site fabrication. Any site civil works is excluded form bidder scope. Please confirm. calibration of instruments, factory testing / inspection, supply of skid mounted 450 SCMH CNG Decompression Skid including packaging, insurance, handling, transportation, loading / unloading at GNGPL Stores / sites, Erection including transportation of CNG Decompression Skid from GNGPL s store to designated site, Hookup with existing pipeline and all related services for Commissioning including commissioning and performance testing as per MR specifications and Special Instructions of GNGPL. scope of work is in bidder's scope. Except civil foundation for skid, all civil works required to comply the scope of work is in bidder's scope. Rest, 31 Volume II of II. Assistance in Maintenance of skid at site on call llbasis we understand dpurchaser will illinformed dfive working day prior for the MATERIAL REQUISITION Item 1c Page No. 4 of 500 within 2 years ARC. The price shall be inclusive of Airfare Boarding, Lodging, Local Transport, Incidental, Traveling etc. & all other expenses. planned visits by purchaser. Also during visit any spares/tools/man power/hydra/crain needed for the maintenance the same shall be in purchaser socpe. Please confirm. Page 4 of 9

6 32 Volume II of II. Page No. 14 of 500 Electrical heating system Electrical /Water Bath/Catalytic Heater (Heat Tracing Option)/ Electrical Water Bath heating/ With Gas FiredHeating System Inter connecting Piping of Regulators and equipments. We understand electrical Gas heater is acceptable. For the same the required power supply of 440 VAC will be make available at skid mounted Heater control panel by Purchaser. Please confirm. Refer Material Requisition (MR). Rest, 33 Volume II of II. Page No. 16 of 500 On line solar panel, Batteries, modem, Inbuilt or field mounted EVC with RPD meter shall be supplied. The system shall be designed in such a way that it should operate through battery. The batteries & charger are to be provided in separate explosion proof junction boxes (along with breather plug) and they are to be mounted on trolley to be fixed at site at an approx. distance of 5 meters. All interconnection cables areinbidder s scope. We understand that interconnecting cables & JB with stand for such connectivity will be supplied loose with the skid. However JB installation at site form 5 meter away form skid & cable laying and JB stand foundation at site will be in purchaser scope. Please confirm. Interconnecting cables & JB with stand is in bidder's scope. Also, all cable laying, installation of JB, JB stand foundation, etc. is in bidder's scope. Rest, condition prevails. 34 Volume II of II. Page No. 16 of 500 Approval of skid design from approving agencies mentioned elsewhere. We understand we need to take skid design approval from Purchaser only during project execution. Any government body approval for the skid installation / startup at site is in purchaser scope.kinldy confirm. 35 Volume II of II. Page No. 18 of Salient Points: 1. Outlet ttemperature of the skid shall hllbe 15 Deg.C. As per P&ID Outlet is mentioned as 15 to 35 Deg.C. We understand skid outlet Temp is required as 15 Deg.C. & We need to size heater accordingly. Please confirm. Min. outlet t gas temperature t of the skid shall be 15 Deg.C. However Heater shall be automatically started if temperature of gas drops below 15 deg C & shall be automatically stopped if it exceeds beyond 35 deg C. Rest, Page 5 of 9

7 36 Volume II of II. Page No. 18 of Inlet Size ¾ SS Tube with plain ends 5. Outlet size 2 NB 150# WNRF. We understand the sizes & Class mentioned in the P&ID & subject clause are fixed & bidder to follow the same. Please confirm. Refer P&ID. Rest, 37 Section X P&ID Pg.No.112 of 500 As per P&ID 2nd stage pressure reduction Regulator & SSV are mentioned seperately. Kindly accept Regulator with Integral Slamshut Model. PCV & SSV shall be separate at both the stages as indicated in P&ID. PCV with integral SSV is not acceptable. 38 Volume II of II. 7. Power supply (230V+ 10%, 1 phase, 50 Hz + 5% ) up to JB is in CLIENT s scope. Bidder has to include suitable voltage conditioning unit, if required. 39 Page No 18 of 500 PCV & SSD PCV Data sheet is same for both 1st stage & 2nd stage regulator. If bidder provide electrical Heater 440 VAC will be available for skid Mounted heater control panel. Please confirm. I think, client is asking to supply SMPS (230VAC to DC convertor as per system requirement). Kindly accept NPT End connection in 1st stage PCV & SSV, For 2nd stage PCV/SSVwith Flanges End Connection. Will be dealt during detail engg. 40 Volume II of II. Page No. 18 of All customer interface connections, gas Inlet & outlet piping connections shall be brought out to approximately 3.0m from the skid edge. Hookup with the customer interface connections, gas inlet and out let piping connections are included in bidder s scope. We understand bidder to provide extra spool(instead of spool we need to mention pipe) / tube length of 3 Mtrs.. Straight length. At skid Inlet & Skid Outlet for the customer interface. Please confirm. Piping shall be done as per site requirement. Rest, 41 Volume II of II. SECTION XII LIST OF VENDORS FOR BOUGHT OUT ITEMS Page No. 125 of 500 PRESSURE REGULATOR AND SLAM SHUT VALVE for First stage Kindly accept Vanaz for first stage regulators & SSV. Page 6 of 9

8 42 Volume II of II. SECTION XII LIST OF VENDORS FOR BOUGHT OUT OUT ITEMS Page No. 130 of 500 Ball valve Kindly accept Petro Valves. 43 Check Valve As per datasheet 5 % RT required and as per spec 600# and above 100% RT required Kindly conform datasheet or tender spec to be followed for RT requirement Refer Technical Specification. Rest, 44 Ball Valve & Globe valve As per datasheet RT not required but as per tender Kindly conform datasheet or tender spec to be followed for RT Refer Technical Specification. Rest, spec 600# and above 100% RT required requirement 45 Ball valve, Globe valve and Check valve As per tender QAP the assembled valve mentioned witness in sampling plan As per tender QAP sampling plane mentioned witness the quantum of check shall be 10% kindly conform Sampling shall be 100%. Rest, 46 Ball valve, Globe valve and As per tender QAP the Contractor and TPI to be As per 3.1 certification either contractor are TPI shall witness kindly Final inspection of all the items shall be done Check valve witnessed conform by TPI as per QAP. Rest, condition prevails. Page 7 of 9

9 47 PSV & CRV As per tender QAP the RT is mentioned but as per tender spec 600# and above 100% RT required Kindly conform for 100% RT requirement we need to follow as per tender spec or tender QAP. Refer Technical Specification. Rest, 48 PCV & SSD As per tender QAP RT not required as per spec RT required 100% 600# and above. Kindly conform for RT requirement. Refer Technical Specification. Rest, 49 Final Dossier To save tree the final dossier shall be two Hardcopy Kindly accept Accepted. Rest, and three soft copy 50 Pg.no.75 of 213 Clause 20. Gautantee operating characteristics of any materials, arises at any time prior to twelve(12) months from the date of the first commercial operation of the Plant for which the materials supplied under the Contract form a part thereof, or twenty four (24) months from the date of last shipment whichever period shall first expire. Kindly Confirm (12) months from the date of the first commercial operation of the Plant for which the materials supplied under the Contract form a part thereof, or twenty four (18) months from the date of last shipment whichever is earlier. Refer clause no. 31 of SCC. conditions prevail. 51 Pg.no.75 of 213 Clause 20. Gautantee Repaired or replaced materials shall be similarly guaranteed by the SELLER for a period of no less than twelve (12) months from the date of replacement/repair. Kindly accept,point no 2.The warranty for the repaired or replaced part will be warrantied for a period of 3 months from the time of repair or replacement to a max of original warranty period. conditions prevail. 52 Pg.no.168 of 213 Clause 31 The CONTRACTOR/ SUPPLIER shall guarantee the Gaurantee Clause in the section is not closed, Please confirm the conditions prevail. DEFECT LIABILITY PERIOD installation/work for a period of 12months from the date of completion of WORK as certified by the ENGINEER IN CHARGE which is indicated in the Gaurantee will stand similar as Clause 20. pg. no. 75 of 213. Page 8 of 9

10 53 Pg.no.81 of 213 Clause 30.4 Arbitration All disputes, controversies, or claims between the parties (except in matters where the decision of the Engineer in Charge is deemed to be final and binding) whichcannotcannot be mutually resolved within a reasonable time shall be referred to Arbitration by a sole arbitrator. Kindly accept, Arbitration panel shall consist of 3 arbitrators each party shall appoint 1 arbitrator and those 2 shall appoint an umpire, if required. conditions prevail. 54 Pg.no.83/84 of 213 Clause 38 Fall Clause The price charged for the materials supplied under the order by the supplier shall in no event exceed the lowest price at which the supplier or his agent/principal/dealer, as the case may be, sells the materials of identical description to any persons/organizations including the Purchaser or any department of the Central Govt. or any Deptt. Of a State Govt. or any Statutory Undertaking of the Central or State Govt. as the case may be, during the currency of the order If at any time during the said period, the supplier or his agent/principal/dealer, as the case may be, reduces the sale price, sells or offers to sell such materials to any Kindly accept "The price charged for the materials supplied under the order by the supplier shall in no event exceed the lowest price at which the supplier sells the materials of identical description,identical scope of work, quantity, currency rate and other terms and conditions, to any person / organizations including the Purchaser or any department of the Central Govt. or any Department of a State Govt. or any Statutory undertaking of the Central or State Govt., as the case may be, in India, during the currency of the Order. persons/organizations including the Purchaser or any Deptt. Of The above stipulation will, however, not apply to : Central Govt. or State Govt. as the case may be, at a price lower than the price chargeable under the order, he shall forthwith notify such reduction or sale or offer of sale to the Purchase Authority who has issued this order and the price payable under the order for the materials supplied after the date of coming into force of such reduction or sale or offer of sale shall stand correspondingly reduced. The above stipulation will, however, not apply to: a) Exports by the Contractor/Supplier or b) Sale of goods as original equipment at prices lower than the prices charged for normal replacement. c) sale of goods such as drugs which have expiry dates. a) Exports by the Contractor/Supplier or b) Sale of goods as original equipment at prices lower than the prices charged for normal replacement conditions prevail. Note: Any addendum/corrigendum/clarifications shall be integral part of the Bidding Documents and shall be submitted by bidders duly signed & stamped in their bid. Page 9 of 9