GUJARAT NARMADA VALLEY FERTILIZERS COMPANY LIMITED MTPA PAC PROJECT SECTION 6 ANNEXURE 4.7 SPARES, INSP AGENCY & DOCUMENTATION

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1 A. SPARE PARTS Outline for the supply of Spare Parts for various items is as elaborated below: A-1 MACHINERY Commissioning spares will be as per the manufacturer s recommendations. For 2 years of normal operations, contractor shall quote for spare parts as per the list below. A-1-1 Spare Parts List for 2 Years Normal Operation of Centrifugal / Axial / Rotary Compressor Sl. No. DESCRIPTION QUANTITY 1.0 COMPRESSOR 1.1 Completely assembled dynamically balanced spare rotor including clearance check and mechanical run test 1.2 Complete spare coupling including distance piece and set of coupling bolts & nuts 1.3 Stator blade carrier with stator blades completely assembled ( for axial compressor) 1.4 Set of radial bearing shells ( Both suction & discharge side ) 1.5 Set of shoes for thrust bearings ( Both active & inactive sides ) 1.6 Set of labyrinth seals for each casing including labyrinths for balance piston, oil scraper rings etc. (If Mechanical Seal is used, than instead of labyrinth, Mechanical seal may please be read. For the Mechanical seal following spares to be considered. - Complete Mechanical Seal - Seal Face - Rotating - Seal Face Stationary - Elastomers, o-ring,packing, gaskets - Springs 1.7 Set of oil seals 2 sets 1.8 Set of O rings, gaskets, sealing rings for compressor 4 sets 1.9 Sealing compound 1 charge 1.10 Timing gears for Rotary Compressor 2.0 GEAR BOX ( Including bull gear, if applicable) 2.1 Set of bearings for gear box including driver end, intermediate 2 sets stages and driven end 2.2 Set of spare wheels with shaft ( Including bull gear / pinion ) 2.3 Oil seals ( Including bull gear / pinion 2 sets 3.0 GAS COOLERS 3.1 Spare tubes for each cooler (when tubes can be easily replaced) 5% of total tubes In case of finned tube, complete tube bundle 3.2 Rupture disc for each cooler 2 nos 3.3 Set of gaskets for each cooler 2 sets 4.0 Lube Oil System 4.1 Spares for lube oil pump : a) gears ( set of screws, if screw pump is used ) b) bearings c) seal 2 sets - 1 -

2 d) Complete Pump ( Any type of pump) 1 No. 4.2 Lube oil filter cartridges 4 set 5.0 ACCESSORIES 5.1 Set of spares for all valves ( Isolation, control, safety, non return etc.), in gas lines, consisting of spindle, seat, disc, flap, packing etc. 5.2 Spare elements for permanent filters in gas line 6.0 INSTRUMENTATION As per Instrumentation specification enclosed with enquiry / order specification

3 A-1-2 Spare Parts List for 2 Years Normal Operation of Reciprocating Compressor Sl. No. DESCRIPTION QUANTITY 1.0 COMPRESSOR 1.1 Main bearings 1.2 Crankshaft journal bearings 1.3 Big end bearing 1.4 Cross head pin bearings 1.5 Connecting rod body 1 of each size 1.6 Connecting rod securing nuts& bolts for each connecting rod s 1.7 Cross head body 1 of each size 1.8 Cross head pin 1.9 Cross head slides 1.10 Cross head screw, washer, nuts & snap rings etc. for each cross head 1.11 Piston assembly complete with piston rod, piston, piston rings & lock nut etc. For each stage 1.12 Piston rings for each piston 2 sets 1.13 Complete stuffing box assembly 1.14 Wear parts of stuffing box packing for each packing 4 sets 1.15 Wear parts of oil wiper packing for each distance piece 4 sets 1.16 Oil slinger ring 1.17 Liner for each stage 1.18 Complete inlet valves for each cylinder 1.19 Valve plates/buffer plate for each suction valve 4 sets 1.20 Valve springs for each suction valve 4 sets 1.21 Complete discharge valves for each cylinder 1 Set 1.22 Valve plates/buffer plate for each discharge valve 4 sets 1.23 Valve springs for each discharge valve 4 sets 1.24 Valve plates, springs for clearance pockets of each cylinder if 2 sets applicable 1.25 Gasket for head end, valve, valve cover for each suction & discharge valves. 2 sets 2.0 GAS COOLERS 2.1 Tubes for gas cooler 2.2 Tubes for oil cooler 10 % for each cooler 2.3 Gaskets for coolers & press. Vessels 2 sets 3.0 Lube Oil System 3.1 Spares for lube oil pump : a) gears ( set of screws, if screw pump is used ) b) bearings c) seal d) Complete Pump ( Any type of pump) 2 sets 3.2 Lube oil filter cartridges 4 sets 3.3 Cylinder lubrication system : a) Lubricator bearings b) Pumping unit assembly 50 % of total pumping unit assemblies c) Check valves 25 % of each size d) Sight glass e) Coupling 1 no

4 4.0 ACCESSORIES 4.1 Spares for isolation & check valves (including stem, plug, seat, spring, O ring & gaskets etc.) 4.2 Spares for Auxiliary Motors : a) Bearings b) Cooling fan c) Grease nipple & plug 5.0 INSTRUMENTATION As per Instrumentation specification enclosed with enquiry / order specification

5 A-1-3 Spare Parts List for 2 Years Normal Operation of Centrifugal Fans/Blowers Sl. No. DESCRIPTION QUANTITY 1.0 Completely dynamically balanced rotor assembly including 1 Set impeller, wheel, key etc. 2.0 Shaft sleeve 1 Set 3.0 Bearings 1 Set 4.0 Stuffing box packing rings 1 Set 5.0 Gasket & O rings 1 Set 6.0 Complete mechanical seal, if provided 1 No. 7.0 Spares for mechanical seal, if provided 7.1 Stationary ring 1 Set 7.2 Rotating ring 1 Set 7.3 O ring & Gasket 1 Set 7.4 Springs 1 Set 8.0 Coupling bushes 1 Set 9.0 Complete coupling 1 No

6 A-1-4 Spare Parts List for 2 Years Normal Operation of Steam Turbine Sl. No. DESCRIPTION QUANTITY 1.0 Turbine 1.1 Completely assembled dynamically balanced rotor 1.2 Discharge assembly 1.3 Inlet nozzles 1.4 Journal bearing assembly 1.5 Pad for journal bearing 1.6 Thrust bearing assembly 1.7 Pads for thrust bearing 2 sets 1.8 Shaft seal carbon labyrinth ( or any other sealing is used) 2 sets 1.9 Labyrinth seal 2 sets 1.10 Complete coupling ( turbine / g box) Coupling bolts, nuts& washer Coupling shims Rubber bush for coupling 1.12 Governor assembly 1.13 Control valve & servo spares 1.14 Emergency stop valve spare / pilot valve spare 1.15 Over speed trip spare 1.16 Thrust collar assembly 1.17 Sealing compound for parting plane 2 sets 1.18 Shaft driven lo pump complete 1.19 Gears for mop 1.20 Oil seals & gaskets 2.0 GEAR BOX SPARES 2.1 Pinion & gears 2.2 Bearings 2.3 Shaft seal 2 sets 2.4 O ring, gaskets, Oil seals 2 sets 3.0 Lube Oil System 3.1 Pump complete 3.2 Journal bearings 3.3 Thrust bearings 3.4 Internal gear / screw 3.5 Mech seal complete 3.6 Spare for mech seal O ring, gaskets 2 sets Stationary ring & rotating ring Springs 3.7 Shaft 3.8 Complete coupling ( TURBINE / G BOX) Coupling bolts, nuts & washer Shims rubber bushes 3.10 Relief valve assembly 3.11 Plug & seat for relief valve 3.12 Spring & stem for PSV Set of gaskets for each cooler 2 sets Lube oil filter cartridges 4 sets Relief valve - 6 -

7 Safety valve disc & disc holders Lube Oil System Spares for lube oil pump : a) gears ( set of screws, if screw pump is used ) b) bearings c) seal d) Complete Pump ( Any type of pump) A-1-5 Spare Parts List for 2 Years Normal Operation of Centrifugal Pump Sl. DESCRIPTION QUANTITY No. No. of Pumps working Impeller 2 set 2. Impeller locking nut 2 sets 2 sets 2 sets 2 sets 3. Wear Ring 2 sets 3 sets 4 sets 4. Shaft with keys 1 No. 1 No. 1 No. 1 No. 5. Shaft Sleeve 2 sets 3 sets 4 sets 6. Interstage sleeves 2 sets 3 sets 4 sets 7. Interstage Bushes 2 sets 3 sets 4 sets 8. Mech. Seal where applicable 1 no. 1 no. 2 nos. 2 nos. 9. O Rings / Springs for Mech. Seal 2 sets 3 sets 4 sets 10. Mechanical Seal Faces 2 sets 3 sets 4 sets 11 Constant level Oiler 2 sets 2 sets 2 sets 2 sets 12 Deflectors 2 sets 2 sets 3 sets 3 sets 13 Complete coupling 1 No. 1 No. 1 No. 2 No. 14 Flexible elements, Bushes, Pins for 2 sets 2 sets Coupling 15 Bearings ( DE + NDE ) 2 sets 2 sets 2 sets 16 Gaskets & O Rings 2 sets 3 sets 4 sets 6 sets 17 Labyrinths 2 sets 3 sets 4 sets 5 sets 18 Throat Bushing 1 No. 2 Nos. 3 Nos. 4 Nos. 19 Throttle Bushing 1 No. 2 Nos. 3 Nos. 4 Nos. 20 Oil Seals ( or any other arrangement) 2 sets 3 sets 4 sets 6 sets 21 Balancing drum & sleeves 2 sets 2 sets 22 Leak-off valve-gaskets, O Rings and 2 sets 3 sets 4 sets 5 sets springs 23 Spares for gear box (bearings, gears and seals) Lube Oil System Spares for lube oil pump : - 7 -

8 24 a) gears ( set of screws, if screw pump is used ) 25 b) bearings 26, 27 & 29 c) seal d) Complete Pump ( Any type of pump) e) Lube oil filter cartridges 4 set - 8 -

9 A-1-6 Spare Parts List for 2 Years Normal Operation of Reciprocating Pump Sl. DESCRIPTION QUANTITY No. No. of Pumps working A MAIN FRAME 1. Main Bearings 2 set 2. Big End Bearings 3. Thrust Bearings 2 sets 2 sets 4. Crosshead shoes 5. Crosshead bushes 6. Connecting rod bolts complete with nuts 4 Nos. 4 Nos. 6 Nos. 6 Nos. 7. Crank shaft 1 No. 1 No. 1 No. 1 No. 8. Lube oil pump (w/o motor) 1 No. 1 No. 1 No. 1 No. 9. Spare parts for lube oil pump (set of 2 sets 2 sets gears, bushes, gaskets etc.) 10. Cartridge for oil filter. 2 Nos. 2 Nos. 4 Nos. 4 Nos. 11. Special gaskets, oil seals, O rings, special bolts etc. 2 sets 2 sets 4 sets 4 sets B FLUID END 1. Cylinders 1 No. 1 No. 2 Nos. 2 Nos. 2. Plungers / piston & piston rod assembly, piston rings (if applicable) 3. Stuffing box packings 2 sets 2 sets 4 sets 4 sets 4. Plunger Packings 2 sets 2 sets 4 sets 4 sets 5. Suction valve & seat 2 sets 3 sets 4 sets 6. Discharge valve & seat 2 sets 3 sets 4 sets 7. Flushing pump (if applicable) 1 No. 1 No. 1 No. 1 No. 8. Spares for flushing pump. 2 sets 2 sets - Plunger - Plunger packings - Valves - Gaskets 9. Special gaskets, springs, O rings, and 2 sets 2 sets 4 sets 4 sets ring nuts for stuffing box packing, cylinder bolts. C GEAR REDUCER (IF APPLICABLE) 1. Oil seals 2 sets 2 sets 2. Lube oil pump 1 No. 1 No. 1 No. 1 No. 3. Spare parts for lube oil pump-gears, 2 sets 2 sets bushes, gaskets etc D LUBE OIL COOLERS (IF APPLICABLE) 1. Special gaskets, if any 2 sets 2 sets 4 sets 4 sets 2. Spare tubes. 10 % 10 % 10 % 10 % E TORQUE CONVERTER (IF APPLICABLE) 1. Oil seals 2 sets 3 sets 4 sets 2. Piston rings 2 sets 3 sets 4 sets 3. Special gaskets 2 sets 2 sets 4 sets 4 sets 4. Set of V - belts 2 sets 2 sets 5. Complete couplings - 9 -

10 NOTES: 1. The above is only a suggestive list. The Bidder may indicate when certain items are not recommended by them or add other items as required. 2. Set means complete replacement of particular part in one machine. 3. Item wise price against each item shall be furnished in the Performa enclosed with the enquiry 4. The bid/offer shall contain sectional drawing showing location & part no. (for exact identification) & material specification A-1-6 Spare Parts List for Agitator ( per Agitator). 1 Complete shaft with keys, lock nuts - 1 Set 2 Set of Impeller - 1 Set 3 Set of Shaft Sleeve - 1 Set 4 Complete Mechanical Seal - 1 Set 5 Rotating seal face - 6 Stationary Seal Face - 1 Set 7 Set of Elastomers ( O-rings / packing) - 1 Set 8 Spring for Mechanical Seal - 1 Set 9 Complete Couplings - 1 Set 10 Flexible Element for couplings - 1 Set 11 Coupling bolts with bushes - 12 Complete Gear Box - 1 Set 13 Set of Gears for Gear Box - 1 Set 14 Set of O- ring / oil seal / soft part - 1 Set A-2. STATIC EQUIPMENT 10 % of bolts of each size, including girth flanges, tube sheets flanges, etc. Minimum 4 NOS. 400 % Gaskets of all 4 Nos. per size. installed sizes. Test Ring for Exchangers As required for testing A-3 REFORMER AREA

11 Reformer Tubes with all Fittings / flanges at inlet & Outlet Other components of the Reformer Area viz. Burner, fittings, Flanges, etc. 4 % of installed qty As recommended by the supplier A-4 Strainers & Filters Elements Gaskets 1 Nos per type & size 3 Nos per type & size A-5 TOWER TRAYS Spares for tower trays, mainly fasteners of all type, will be as per the suppliers recommendations. A-6 PIPING Following spares are to be supplied for the Piping Bulk Materials: COMPONENT TYPE MATERIAL SIZE ALLOWANCE PIPE CS </= % MIN 25 MTR CS/AS/SS % MIN 6 MTR CS/AS/SS > 8 10 % MIN 3 MTR AS / SS < / = % MIN 6 MTR GLASS LINEED FOR ALL SIZES FITTINGS BW > 2 CS/AS/SS ALL 10 % MIN 1 NO SW</= CS / AS / SS ALL 25 % MIN 1 NO 1.5, ALL ITEMS FLANGES ALL TYPES CS/AS/SS </= % MIN 1 NO % MIN 1 NO > /=10 5 % MIN 1 NO VALVES ALL CS </= % MIN 2 NOS % MIN 1 NO > 8 NIL ALL SS/AS </= % MIN 2 NOS % MIN 1 NO > 8 NIL GASKETS SPW & RTJ METALLIC NON METALLIC ALL, MTO 50 % MIN 1 NO < 9 ALL, MTO > % MIN 6 NOS < 3 25 % MIN 5 NOS % MIN 5 NOS >14 25% MIN 3 NOS

12 BOLTING STUD/2 NUTS CS UPTO 25 % MIN 20 7/8 AS / SS >1 25 % MIN 4 NOS A-7 - Glass lined & other Non Metallic Piping. FOR GLASS LINED / PP / PP+ FRP / PTFE & ANY OTHER NON METALIC PIPINGS, FOLLOWING MAINTENANCE SPARES HAVE TO BE SUPPLIED, 1) 20 % OF ALL INSTALLED PIPING SPOOLS, FLANGES, GASKETS, FASTENERS, ALL TYPE VALVES, FITTINGS. OVER & ABOVE SPARES MENTIOED ABOVE, COMMISSIONING SPARES WILL BE PROPERTY OF GNFC, ONCE THE PROJECT IS COMMISSIONED. A-8 - Safety Valve Spares ( Per Tag of Safety Valves) 1) Disc 2) Disc Holder 3) Nozzles 4) Spring 5) Set of Gaskets 6) Set of Fasteners 7) Complete Pilot 8) Complete set of O-rings Above mentioned spares for the safety valves are applicable to the safety valve procured in the packages like compressor, turbine, pumps, CPU, DM Plant etc. Important Contractor has to note that, for the any type of pumps / rotating equipment which are not covered in the above list than, following spares have to be supplied 1) Complete rotating parts - 1 Set. 2) Mechanical seals spares as mentioned in the Pumps spares above 3) Coupling spares as mentioned in the pumps spares above 4) Gear box ( reducers) spares as mentioned in the pump spares above 5) Lube oil system as mentioned in the pumps spates above 6) Safety valves as mentioned in the spare list for safety valve. 7) Gaskets & fasteners as mentioned in the spare list for pumps. A-9 - Spares for the Flare stacks 1) Complete Pilot burners ( = installed qty) 2) Pilot Head 3 Nos. 3) Pilot strainers 3 Nos. 4) Pilot Venturi 3 NOs. B SCOPE OF THIRD PARTY INSPECTION AGENCY GNFC will appoint Third Party Inspection agency (TPIA). Exact scope will be case specific; however, in general, the scope of the TPIA will be as follows

13 1. Static Equipment Approval of Design Calculations Approval of Drawings Approval of QA Plan. Approval of welder, WPS, PQR, etc. Review of MTC for all Materials Material Identification & stamping transfer Inspect Fit Up & release for welding Witness all other tests specified in Order. Witness hydro test. TPIA will stamp at a visible place on the Static Equipment before issuing Inspection Release Note. A Rubout of the stamping will be taken which will be a part of the documentation. Issue inspection release note after checking for painting, drying, packing, etc. TPIA will also release spares ordered along with the Equipment. TPIA will certify the Final Documentation. This includes whether the documentation for IBR equipment is in line with the IBR requirement or not. 2 Machinery All machines will be constructed under the Inspection of TPIA. All sub components of the machine viz. coolers, dampeners, filters, etc. will also be constructed und the inspection of the TPIA. Final Hydro Test, Mechanical run test, Performance Test, NPSH Test, etc. will also be witnessed by TPIA. TPIA will stamp at a visible place on the Static Equipment before issuing Inspection Release Note. Verification of Castings, pipings, plates, forgings, tubings, flanges, etc. for material against the relevant test certificates will also be in the scope of the TPIA. After witness of the tests, final Inspection release note will be issued to them. TPIA will also release spares ordered along with the Equipment. TPIA will certify the Final Documentation. 3. PIPING TPIA will approve QA Plan. Identification of raw materials will be done by TPIA. This includes mother tubes for pipes, pipes for fittings, plates for welded pipes & fittings, forgings for valves & flanges, castings for Valves, etc. Final Inspection & review of the TCs will be carried out by TPIA. This also includes review of the Heat Treatments & witnessing Lab Test of samples per heat. After final inspection, 100 % fittings & test certificates will be stamped by TPIA & Inspection Release note will be issued. TPIA will certify whether the documentation for IBR material is in line with the IBR requirement or not. 4 SITE ACTIVITIES

14 The Construction Activity will be carried out under the Inspection of TPIA. All necessary documentation such as test packs, RT reports, HT reports, DP Reports, etc, will be reviewed by TPIA. Approval of Welders, WPS, PQR, etc. wil also be done by the appointed TPIA. C DOCUMENTATION Guidelines for the preparation of the Final Documentation for Static Equipment is given in Annexure 4.9 & for machinery, in annexure 4.2. Details of the Documentation to be prepared for Site activity is given in Annexure 4.5. The intent of this specification is to elaborate on the Documentation required during the Bid Evaluation, Project Execution & for other requirements. ALONG WITH BID A) 3 Copies of the Data sheet for all Process Equipment. B) These data sheets shall be preferably in API format, wherever equipment / machine falls under API. C) Proposed PFD / P & Ids for the complete Project. D) Plant Layout of the plant showing internal roads, equipment layout showing major section, like main process area, product area, loading station, storage section, cooling tower, if application, control room, ub station etc.. E) Piping Materials Specification. SUCCESSFUL BIDDER WILL ISSUE: FOR BOUGHT OUT ITEMS: A) 4 Copies of Enquiry for all items - for Approval of GNFC. B) 4 copies of offers - for comments. C) 4 copies of vendor correspondence. D) 4 copies of un priced purchase order with technical specs. E) 4 copies of the drawings submitted by the vendor for comments. F) 4 copies of final approved drawings & QA Plans.. FOR SITE ACTIVITIES A) FOR GNFC 4 copies of all intermediate drawings for all revisions such as: Equipment Layout Piping Layout Plan Piping Specs Piping Isometrics Drawings for of main plant etc.. MTO for Procurement

15 FOR STATUTORY APPROVALS Required copies of drawings shall be issued for Statutory Approvals. FOR VENDORS, SUB VENDORS, SITE ERECTION CONTRACTORS, ETC. Required copies of drawings shall be issued