SEB-EMEPMI-03-20 R1

PROVISION OF PAN MALAYSIA MAINTENANCE, CONSTRUCTION AND MODIFICATION CONTRACT (PM-MCM) FOR YEAR 2018 TO 2023. DOCUMENT TITLE: Pages: Revision No.: WELDING PROCEDURE SPECIFICATION (WPS) FSP-KPW-T17-025 Page 1 of 21 1 DOCUMENT NO.: SEB-EMEPMI-03-20 Document Title: WELDING PROCEDURE SPECIFICATION FSP-KPW-T17-025 MATERIAL: ASTM A106 GR. B TO ASTM A312 TP316L PROCESS: GTAW / SMAW POSITION: ALL THICKNESS RANGE QUALIFIED: 10.97mm 12.7mm (CHARPY TESTED @ 0°C & -101°C) Name Authorization Signature Date Designation 02 Apr 2022 Prepared Mohd Faizuddin Md Yusof QAQC Engineer 02 Apr 2022 02 Apr 2022 Reviewed Mohd Ainan Fadzullah QAQC Lead Shamuzzeen Approved Project Manager 1 Mohd Asyraf Mohammad Reviewed Mohaidin (EMEPMI) Appraised (EMEPMI)

PROVISION OF PAN MALAYSIA MAINTENANCE, CONSTRUCTION AND MODIFICATION CONTRACT (PM-MCM) FOR YEAR 2018 TO 2023. DOCUMENT TITLE: Pages: Revision No.: WELDING PROCEDURE SPECIFICATION (WPS) FSP-KPW-T17-025 Page 2 of 21 1 DOCUMENT NO.: SEB-EMEPMI-03-20 SUMMARY OF AMENDMENTS Revision Date Description of Change A 15 Jan 2019 B 16 Dec 2019 Issue for review C 20 Feb 2020 Issue for Approval 0 18 Feb 2022 Rev. A Code 2 changes: 1 02 Apr 2022 1. QW-410: add Backing gas shall not be removed until the root and filling pass thickness at least 9.5mm. Re-issue for Approval Rev B Code 2 changes: 1. QW-403: change chemical analysis & properties for SS to 16Cr – 12Ni – 2Mo 2. QW-403: revise maximum thickness range to 21.94mm 3. QW-409: revise heat input Approved for Implementation Approved for Implementation - Revised thickness range based on ASME B31.3 requirement

SAPURA FABRICATION SDN BHD LEVEL 9, SOUTH WING. SAPURA @MINES, NO 7 JALAN TASIK THE MINES RESORT CITY. 43300 SERI KEMBANGAN, SELANGOR DARUL EHSAN TEL: 03-8659 8800 FAX: 03-8659 8873 Web-Site : www.sapuraenergy.com WELDING PROCEDURE SPECIFICATION (WPS) Section IX, ASME Boiler and Pressure Vessel Code Welding Procedure Specification No. FSP/KPW/T17/025 Date 02/04/2022 Supporting PQR No.(s) PQR/KPW/T17/025 Revision No. 1 Code ASME IX 2021, ASME B31.3 & GP 29-03-02 Welding Process(es) GTAW / SMAW Type(s) Manual / High Frequency (Automatic, Manual, Machine, or Semi-Auto.) JOINTS (QW-402) Details Joint Design SINGLE VEE BUTT *Beveling preparationwubtyh flame cut & Grinding Backing (Yes) SMAW (No) GTAW Backing Material (Type) WELD METAL 60⁰ - 70°  Metal (Refer to both backing and retainers)  Nonmetallic  Non-fusing Metal  Other Sketches, Production Drawings, Weld Symbols or Written 1.0 ±0.5 mm Description should show the general arrangement of the parts to be mm Welded. Where applicable, the root spacing and the details of weld Groove may be specified. 1.5 - 3.0 mm *BASE METALS (QW-403) P-No. 1 Group No. 1 To P-No. 8 Group No. 1 OR ASTM A106 GR. B Specification type and grade ASTM A312 TP316L to Specification type and grade OR Chem. Analysis and Mech. Prop. C: 0.30 Max, Mn: 1.06 Max, Si: 0.10 Max To Chem. Analysis & Mech. Prop. 16Cr – 12Ni – 2Mo Thickness Range: Base Metal: Groove 10.97mm to 12.7mm Max. Fillet All Thickness Diameter All Diameter Other If not required Charpy Impact Test, the thickness range of base metal is 5.0mm to 12.7mm *FILLER METALS (QW-404) GTAW SMAW Spec. No. (SFA) 5.9 5.4 AWS No. (Class) ER309L E309L-16 F-No. A-No. 6 5 Size of Filler Metals 8 8 Ø2.4 mm Ø2.6 mm & Ø3.2 mm Weld Metal Thickness range: Groove 6.0 mm Max. 6.7 mm Max. Fillet ALL ALL Electrode-Flux (Class) - - Flux Trade Name - - Consumable Insert - - Filler Metal Product Form SOLID COVERED ELECTRODE Electrode Trade Name KOBELCO TG-S390L KOBELCO NC-39L *Electrode shall be baked as per Manufacturer recommendation (Drying temp 300 – 350°C at min 2 hours) FSP-KPW-T17-025 REV 1

POSITIONS (QW-405) POST WELD HEAT TREATMENT (QW-407) Position(s) of Groove ALL Temperature Range - Welding Progression: Up √ Down Position(s) of Fillet - Time Range - Other - Other - - GAS (QW-408) PREHEAT (QW-406) Percent Composition Preheat Temp. Min. 32º C Gas(s) (Mixture) Flow Rate 18 – 25 LPM Inter-pass Temp. Max. 150º C Shielding Argon 99.995% Trailing - - - Preheat Maintenance - Backing 18 – 25 LPM Other Argon 99.995% Other - - - - (Continuous or special heating, where applicable, should be recorded) ELECTRICAL CHARACTERISTICS (QW-409) Filler Metal Welding Current Travel Classification Dia. Speed Weld Process Type and Volts String Weave Split (mm/sec) Heat Input Pass(es) Polarity (V) Layer (KJ/mm) Amps (A) 0.74 ~ 1.24 ROOT GTAW ER309L 2.4 DC (-) 80 ~ 103 10 ~ 11 X - - 55 ~ 65 1.40 ~ 1.76 1.66 ~ 2.02 H/PASS GTAW ER309L 2.4 DC (-) 150 ~ 160 14 ~ 15 - X - 82 ~ 90 1.13 ~ 1.53 FILL SMAW E309L-16 3.2 DC (+) 120 ~ 122 23 ~ 24 - X X 87 ~ 100 CAP SMAW E309L-16 2.6 DC (+) 90 ~ 95 21 ~ 22 - X X 82 ~ 100 Amps and volts, or power or energy range, should be recorded for each electrode size, position, and thickness, etc. Pulsing Current - Heat Input (max.) GTAW: 1.76KJ/mm Tungsten Electrode Size and Type SMAW: 2.02KJ/mm Mode of Metal Transfer for GMAW (FCAW) Ø 2.4 mm with EWTH 2% (Pure Tungsten, 2% Thoriated, etc.) Other - (Spray arc, short circuiting arc, etc.) - TECHNIQUE (QW-410) String or Weave Bead STRING / WEAVE Orifice, Nozzle, or Gas Cup Size - Initial & Inter-pass Cleaning (Brushing, Grinding, etc.) BRUSHING & GRINDING (SS Wire brush & iron free grinding disc) Method of Back Gouging N/A Oscillation NO Contact Tube to Work Distance NO Multiple or Single Pass (per side) MULTIPLE Multiple or Single Electrodes SINGLE Electrode Spacing - Peening NO Other Backing gas shall not be removed until the root and filling pass thickness at least 9.5mm GTAW: Weave 3X solid wire dia. Max / SMAW: Weave 3X electrode dia. Max. KHL SDN. BHD. PREPARED 3RD PARTY. REVIEWED CLIENT. APPRAISED NAME NAME NAME : MOHD FAIZUDDIN SIGNATURE : SIGNATURE : DATE : DATE : SIGNATURE : : : DATE : 02 APR 2022 FSP-KPW-T17-025 REV 1