CORRIGENDUM ADDENDUM NO. 04 DATED TO TENDER NO. SDG5327P18/09 DATED

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MATERIALS DEPARTMENT P.O. DULIAJAN-786602 DIST. DIBRUGARH ASSAM, INDIA PHONE: 0374-2808724 FAX: 0374-2800533 E-MAIL: mmfd1@oilindia.in CORRIGENDUM ADDENDUM NO. 04 DATED 06.10.2017 TO TENDER NO. SDG5327P18/09 DATED 01.08.2017 This addendum is issued to revise the item specifications, clauses in Annexure-IA of NIT and Bid Closing/Bid Opening Date as mentioned here under: (A) Amendment in Item Specifications Item Existing, Material Description Amended Material Description No. 110 Bend Bevel Ended, Pre- coated by 90Deg, Fabricated from line pipe 200mm,NB (8" ) dia, ERW/LSAW/HSAW, Grade API 5L X-46,PSL -2,W/T 6.4mm as per following specification i) Pipe Outside diameter 219.1mm, 144kg/sq cm v) Deg of Bend : 90Deg Bend radius R=6D where R is the radius of the bend and D is the diameter. Bend Bevel Ended, Pre- coated by Radius 90Deg, Fabricated from line pipe 200mm,NB (8" ) dia, ERW/LSAW/HSAW, Grade API 5L X- 46,PSL -2,W/T 6.4mm as per API 5L latest edition having following specification i) Pipe Outside diameter 219.1mm, 144kg/sq cm v) Deg of Bend : 90Deg Bend radius R=6D where R is the radius of the bend and D is the diameter. 120 BEND,45 DEG,NB 200MM, Bevel Ended, Pre- coated by Heat Shrinkable sleeves, as per ISO- 21809-3:3016, Long Radius 45 Degree Fabricated from line pipe BEND,45 DEG,NB 200MM, Bevel Ended, Pre- coated by Polyethylene Heat Shrinkable sleeves, as per ISO-21809-3 latest edition, Long Radius 45 Degree Fabricated from line pipe 200mm (8") NB Page 1 of 6

200mm (8") NB diameter, ERW/LSAW/HSAW Grade API 5L X-46, PSL -2, W/T 6.4 mm as per following specification: i) Pipe Outside diameter 219.1mm, 144kg/sq cm v) Deg of Bend : 45Deg Bend radius R=6D where R is the radius of the bend and D is the diameter 130 Bend Bevel Ended, Pre- coated by 90Deg, Fabricated from line pipe 150mm (6" ) NB dia, ERW/LSAW/HSAW, Grade API 5L X-46,PSL -2, W/T 6.4mm as per following specification: i)pipe Outside diameter168.3mm, ii)thickness:6.4mm, iii) Weight per meter : 25.55 kg/m, iv) Test mill Pressure (Hydraulic): 187kg/sq cm v) Deg of Bend : 90Deg, Bend radius R=6D where R is the radius of the bend and D is the diameter 140 Bend Bevel Ended, Pre- coated by 45Deg, Fabricated from line pipe 150mm (6" ) NB dia, ERW/LSAW/HSAW, Grade API 5L X-46,PSL -2, W/T 6.4mm as per following specification; i)pipe Outside diameter 168.3mm, iii) Weight per meter : 25.55 kg/m, diameter, ERW/LSAW/HSAW Grade API 5L X-46, PSL -2, W/T 6.4 mm as per API 5L latest edition having following specification: i) Pipe Outside diameter 219.1mm, 144kg/sq cm v) Deg of Bend : 45Deg Bend radius R=6D where R is the radius of the bend and D is the diameter Bend Bevel Ended, Pre- coated by Radius 90Deg, Fabricated from line pipe 150mm (6" ) NB dia, ERW/LSAW/HSAW, Grade API 5L X-46,PSL -2, W/T 6.4mm as per following specification: i)pipe Outside diameter168.3mm, ii)thickness:6.4mm, iii) Weight per meter : 25.55 kg/m, iv) Test mill Pressure (Hydraulic): 187kg/sq cm v) Deg of Bend : 90Deg, Bend radius R=6D where R is the radius of the bend and D is the diameter Bend Bevel Ended, Pre- coated by per ISO-21809-3 latest edition,long Radius 45Deg, Fabricated from line pipe 150mm (6" ) NB dia, ERW/LSAW/HSAW, Grade API 5L X-46,PSL -2, W/T 6.4mm as per following specification; i)pipe Outside diameter 168.3mm, iii) Weight per meter : 25.55 kg/m, iv) Test mill Pressure (Hydraulic): 187kg/sq cm, Page 2 of 6

iv) Test mill Pressure (Hydraulic): 187kg/sq cm, v) Deg of Bend : 45Deg Bend radius R=6D where R is the radius of the bend and D is the diameter. 150 Bend,Bevel Ended, Pre- coated by Bend, 45 Deg. Fabricated from Line Pipe 10"(273.1 mm), NB ERW/LSAW/HSAW, Grade X-46, PLS-2, W/T = 7.1 mm as per API 5L latest edition; 1. Deg of Bend: 45 Deg 2., Bend radius 6D, 2. Pipe Out side diameter: 273.1 mm, 3. Thickness : 7.1 mm, 4. Weight per meter : 46.57 kg/m Test Pressure: 145 kg/cm 2 160 Bend,Bevel Ended, Pre- coated by Bend, 60 Deg. Fabricated from Line Pipe 10" (273.1 mm), NB ERW/LSAW/HSAW, Grade X-46, PLS-2, W/T = 7.1 mm as per API 5L latest edition having following specification : 1. Deg of Bend: 60 Deg,bend radius 6D, 2. Pipe Out side diameter: 273.1 mm, 4. Weight per meter : 46.57 kg/m. 5. Test Pressure: 145 kg/cm2 v) Deg of Bend : 45Deg Bend radius R=6D where R is the radius of the bend and D is the diameter. Bend,Bevel Ended, Pre- coated by Radius Bend, 45 Deg. Fabricated from Line Pipe 10"(273.1 mm), NB ERW/LSAW/HSAW, Grade X-46, PLS-2, W/T = 7.1 mm as per API 5L latest edition; 5. Deg of Bend: 45 Deg 2., Bend radius 6D, 6. Pipe Out side diameter: 273.1 mm, 7. Thickness : 7.1 mm, 8. Weight per meter : 46.57 kg/m 9. Test Pressure: 145 kg/cm 2 Bend,Bevel Ended, Pre- coated by Radius Bend, 60 Deg. Fabricated from Line Pipe 10" (273.1 mm), NB ERW/LSAW/HSAW, Grade X-46, PLS-2, W/T = 7.1 mm as per API 5L latest edition having following specification : 1. Deg of Bend: 60 Deg,bend radius 6D, 2. Pipe Out side diameter: 273.1 mm, 4. Weight per meter : 46.57 kg/m. 5. Test Pressure: 145 kg/cm2 170 Bend,Bevel Ended, Pre- coated by Bend, 90 Deg. Fabricated from Line Pipe 10" (273.1 mm), NB ERW/LSAW/HSAW, Grade X-46, PLS-2, W/T = 7.1 mm as per API Bend,Bevel Ended, Pre- coated by per ISO-21809-3 latest edition, 90 Deg. Fabricated from Line Pipe 10" (273.1 mm), NB ERW/LSAW/HSAW, Grade X-46, PLS- 2, W/T = 7.1 mm as per API 5L latest edition having following specification : Page 3 of 6

5L latest edition having following specification : 1. Deg of Bend: 90 Deg, bend radius 6D, 2. Pipe Out side diameter: 273.1 mm, 4. Weight per meter : 46.57 kg/m 6. Test Pressure: 145 kg/cm2 1. Deg of Bend: 90 Deg, bend radius 6D, 2. Pipe Out side diameter: 273.1 mm, 4. Weight per meter : 46.57 kg/m 6. Test Pressure: 145 kg/cm2 B. Amendment in Annexure-IA of NIT : Tender clause Existing Clause no. 6.14 Para-6.1 to 6.13 shall also cover scope for 3 layer polyethylene coating for the LR bends. Amended as SCOPE OF WORK AND SPECIFICATIONS FOR POLYETHYLENE HEAT SHRINKABLE COATING OF LR BENDS: 6.14.1 Reference code ISO 21809-3,latest edition, Petroleum and Natural Gas Industries External Coating for Buried or Submerged Pipelines used in Pipeline Transportation Systems Part 3 Field Joint Coating. The maximum design temperature of the polyethylene heat shrinkable coating shall be 80 deg C. 6.14.2 The heat shrinkable coating material shall be as follows as per clause 14.2.3 of the reference code ISO 21809-3 :- Type 14B-2 is a cross-linked heat shrinkable polyethylene-base material, with Tmax not greate than 80deg C., which applied with a liquid epoxy, FBE or any other compatible primer. 6.14.3 SURFACE PREPARATION Surface preparation shall be carried out according to clause 14.3 of the reference code. 6.14.4 Application of the coatings Application of the coating shall be carried out in accordance with clause 14.4 of the reference code. Page 4 of 6

6.14.5 Testing of the applied coatings Testing of the applied coatings shall be carried out in accordance with clause 14.5 of the reference code. Tests to be carried out :- i)thickness (as per Annex B of the code) ii)holiday detection (As per Annex C of the code) iii)peel strength (As per Annex H of the code and shall meet the requirements of iv)cathodic disbondment (As per Annex G of the code and shall meet the requirements of v)hot-water immersion test (As per Annex I of the code and shall meet the requirements of vi)impact resistance (As per Annex D of the code and shall meet the requirements of vii)indentation resistance (As per Annex E of the code and shall meet the requirements of viii)lap shear strength (As per Annex J of the code and shall meet the requirements of ix)thermal ageing resistance (As per Annex M of the code and shall meet the requirements of 6.14.6 Coating identification shall be as per Table 14.1 of the reference code which shall be furnished to the Company 6.14.7 Property of the type 14B-2 joint coatings PE-with primer) shall be as per Page 5 of 6

Table 17 of the reference code which shall be furnished to the Company 6.14.8 Data sheet of the primer shall be furnished to the Company as per the reference code. 6.14.9 Data sheet of the Heat Shrinkable materials shall be furnished to the Company as per the reference code. 6.14.10 Conditions of coating application shall be recorded as per the reference code and shall furnished to the Company. 8.1.3 External coating of the bends by using 3 layer side extruded polyethylene coating as per Para-6.0 PART-A. External coating of the bends by using Polyethylene Heat Shrinkable Sleeve coating as per clause 6.14. C. Amendment in Bid Closing/Bid Opening Date i) New Bid Closing Date & Time: 25.10.2017 (11:00 IST) ii) Sale of Tender Documents: 18.10.2017 (15:30 IST) iii) New Bid Opening Date & Time: 25.10.2017 (14:00 IST) All other terms and conditions of the Bid Document remain unchanged. Sd/- Aayush Somani MM (FD) (i/c) For GM-Materials For Resident Chief Executive Page 6 of 6