• Author / Uploaded
• Pedro Montes Marin

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PTTEP Arthit Field Development Central Facilities Piping Stress Analysis Specification

Doc. No. A-1-PP-PI-SP-0003

Rev. B1 Page 17 of 23

NORMAL CASES 1 2 3 4 5 6 8 9 10 11 12 13

ASME B31.3 Stresses, Nozzle Loads , Restraint Loads & Hydro-test Restraint loads Simple System System with added PSV Forces System with Spring Hangers W+D4+T1+P1 (OPE) 1 W+D4+T1+P1+F1 (OPE) 1 W (HGR) W+P1 (SUS) – B31.3 Stresses 2 W+P1+F1 (OPE) 2 W+D4+T1+P1 (HGR) WIN1 (OPE) 3 W+P1 (SUS) – B31.3 Stresses 3 W+D4+T1+P1+H (OPE) WIN2 (OPE) 4 WIN1 (OPE) 4 W+P1+H (SUS) – B31.3 Stresses WW+HP (HYD) – Hydro-test Loads 5 WIN2 (OPE) 5 WIN1 (OPE) L2+L3 (OCC) B31.3 Stresses 6 WW+HP (HYD) – Hydro-test Loads 6 WIN2 (OPE) L2+L4 (OCC) 7 L2+L4 (OCC) B31.3 Stresses 7 WW+HP (HYD) – Hydro-test Loads L1+L3 (OPE) Nozzle & 9 L2+L5 (OCC) 8 L4+L5 (OCC) B31.3 Stresses L1-L3 (OPE) Restraint 10 L1+L4 (OPE) Nozzle & 9 L4+L6 (OCC) L1+L4 (OPE) Loads 11 L1-L4 (OPE) Restraint 10 L3+L5 (OPE) Nozzle & L1-L4 (OPE) 12 L1+L5 (OPE) Loads 11 L3-L5 (OPE) Restraint L1-L2 (EXP) – B31.3 Stresses 13 L1-L5 (OPE) 12 L3+L6 (OPE) Loads 14 L1-L2 (EXP) – B31.3 Stresses 13 L3-L6 (OPE) 14 L3-L4 (EXP) – B31.3 Stresses Hydro-test load case shall be run separately with Springs replaced by Rigid hangers.

BLAST CASE Stresses & Restraint Loads

1 W+D4+T1+P1 (OPE) 2 W+P1 (SUS) 3 BLAST – X (OCC) 4 BLAST – Y (OCC) 5 BLAST – Z (OCC) 6 L1+L3 (OPE) 7 L1-L3 (OPE) Restraint 8 L1+L4 (OPE) Loads 9 L1-L4 (OPE) only 10 L1+L5 (OPE) 11 L1-L5 (OPE) 12 L2+L3 (OCC) 13 L2-L3 (OCC) Stress Check, 14 L2+L4 (OCC) Allowable = 15 L2-L4 (OCC) Yield 16 L2+L5 (OCC) 17 L2-L5 (OCC)

TRANSPORTATION CASE B31.3 Stresses, Nozzle & Restraint Loads

WNC+D1+D2+D3+U1+U2+U3(SUS)

SLUG CASE This case is similar to Normal case with added forces. The added forces are Slug forces at pipe elbows.

SURGE CASE This case is also similar to Normal case with added forces. The added forces are Surge forces at pipe elbows. If the system has to be designed for the effect of surge at one elbow at a time, then as many number of cases as the number of elbows in the system have to be analysed to determine the worst loads.

W-

Pipe Weight, Insulation Wt, Fluid Wt, Rigid Wt WW - Pipe Weight, Insulation Wt, Water-filled Wt, Rigid Wt WNC - Pipe Weight, Insulation Wt, Rigid Wt P1 Design or Operating Press. HP Hydrostatic Test Pressure T1 Design or Operating Temp. D1,D2 - Deck deflections during & D3 transportation D4 Anchor Thermal Movement F1 Applied Forces or Moments H Hanger Load WIN1 - X direction Wind Pressure WIN2 - Z direction Wind Pressure BLAST - Blast Forces in X,Y,Z - X,Y,Z Directions U1,U2 - Acceleration during & U3 transportation OPE SUS OCC EXP HYD HGR

- Operating (No code stress check) - Sustained case - Occasional case - Expansion case - Hydro-test case - Hanger Load case