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CAT - 6W201010:25 AM PAGE: 12oflg New Thermal Relief Assembly (ITEM 101 CODE 3) 1. One(1)new 2"Shell Nozzle(Thermal Relief)shall be installed near the existing inlet nozzle. A 2'Schedule 80-150#R.F.Long Weld Neck Flange nozzle shall be installed in the tank shell adjacent to the product nozzle.The installation shall comply with API-650 Figure 5-6 weld spacing requirements. A 2"sockolet shall be installed on product line on the"pipeline'side of Bre tank valve. 2. The pressure relief valve shall be Crosby 961102M or Consolidated 1990C, 1%MNPT x 1'-FNPT. Set ressures shall be site specific and determined by the BP representative. 3. • • •• The Pressure Relief Valves shall be visually inspected(VT)by a BP representative for determination of Make,Model No.,inlet&outlet connections,orifice size, relieving capacity and pressure selling.The BP representative shall document and record the Pressure Relief Valves data. 4. The pressure relief system shall consist of one 2"1509 RF Flanged Vogt 353,or equal,gate valve and one V 150#RF Flanged Vogt 353,or equal,gate valve. See drawing below. S. All pressure relief system ball valves(at test locations)shall be Y"Apollo#73-103 ides,or equal,carbon steel threaded ball valves. 6. All pipe and nipples shall be Schedule 80 A-106-B carbon steel pipe.All fittings;i.e.elbows,unions,tees, couplings,sockolets,inserts,plugs;shall be 3,0009 Socket-Weld,Forged Steel,A-105 with socket weld connections. 7. All pressure relief piping and fittings shall be socket welded,except for the pressure relief valve connection which shall be screwed in the existing piping.Ail threaded connections shall be cleaned and male threads wrapped with 5 to 7 wraps of Teflon tape.The wrapped threads shall also be coated with a quality thread lubdcantfsealant. S. The 2"flanged nozzle connection to the tank shall be installed in accordance with API-650 Figure 5-6.The nozzle neck shall be welded on both inside and outside of the tank shell utilizing E7018 electrodes. 9. Paint shall be removed from the area where cut out is to be made. 10. The tank shell cut out shall match that of the nozzle size with proper allowance for weld fit-up in accordance with the approved welding procedure.The nozzle shall be inserted Into the shell hole so that the nozzle is flush with the internal surface of the tank shell. All internal shell welds shall be blend ground to avoid damage to the floatino roof seals.The nozzle shall be tacked in place 11. • • •• The fit-up of the nozzle shall be visually Inspected by a SP representative for compliance with the approved welding procedure. 12. The nozzle-to-ahell weld shall be a minimum full penetration and complete fusion 114'full fillet weld all around utilizing E7018 electrodes. 13. Nozzle-toShell Weld Testing and Inspection. a. • • •• The interior weld final pass shall be visually inspected(VT)by a BP representative. b. • • '• The exterior weld final pass shall be visually inspected(VT)by a SP representative. C. • • •• The completed welds shall be Magnetic Particle examined(MT)by NDE contractor,both interior and exterior,and witnessed by a Be representative. d. • • • • All areas shall be visually inspected(VT)by a BP represantstive. 14. The inside edge of the socket weld fittings shall be weld prepared with a chamfer before assembly.The fit-up of ell nt les into the socket weld fittings shall include a 1f8'internal gap at the bottom of the socket 15. Zia •• The fit-up of the piping inside socket weld fitting shall be visually inspected by a BP representative for compliance with the approved welding procedure. 16. All socketwelds shall be a minimum of 2 pass and no more than 3 passes full fillet weld all around utilizing E6010(mot)and E7018(cap&fill)electrodes. 17. Socket Weld Testing and Inspection. a. JE13MThe weld root pass shall be visually inspected(VT)by a BP representative. b. • • '• The weld final pass shall be visually inspected(VT)by a SP representative. C. •• The completed welds shall be Dye Penetrant examined(PT)by NDE contractor and witnessed by a SP representative. 18. The pressure relief piping shall be hydrotesled to 1.5 times the relief valve set pressure. The piping shall be drained and Mown dry after the test. 19. • •• The completed installation shall be visually inspected by 2 BP representative.