Vessfire Simulation Report Report generated: 21.1.214 13:8:17 Rupture summary No ruptures occurred. Case Definition Vessel 23-VG2A Flame: Longitudinal start: 45 % Longitudinal end: 55 % Angle from top: 3 Exposed arc: 35 Impinging Flame: Yes First blow-down valve: Diameter:,6344 m Contraction factor: 8 % Delay: min BDV position: Longitudinal: 1 % Angular (from top): Blow-down line: Diameter:,1143 m Wall thickness:,6 m Length: 5,148 m Pressure safety valve: Type: Square Diameter:,54 m Contraction factor: 8 %
Pipes Longitudinal position: 82 % Angular position (from top): Opening pressure: 6 5 kpa External longitudinal stress: 3 MPa Stress factor: 1 % Failure criterion: UTS Material: Duplex_22Cr Material strength: 6 MPa Outer diameter: 3,426 m Wall thickness:,44 m Corrosion allowance: m Length: 6,437 m Operating pressure: 3 89 kpa Operating inventory temperature: 47,35 C Operating shell temperature: 25 C Hydrocarbon level: 1 m Water level: m Backpressure: 1 kpa Environment temperature: 9,85 C Emissivity: 85 % Orientation: Vertical Common pipe data: Heat load "Background" Environment temperature: 6,85 C Emissivity: 83 % Heat-transfer coefficient: 3 W/m² K Impinging Flame: Yes Heat load "PeakHeat" Environment temperature: 6,85 C Emissivity: 83 % Heat-transfer coefficient: 1 W/m² K Impinging Flame: Yes Maximum ruptured pipes: Contraction factor: 8 % Pipe 6-PS-23-62-CS71 Material: Duplex_22Cr Outer diameter:,2191 m Wall thickness:,71 m Length: 8,846 m Mill tolerance: % Corrosion allowance: m Peak load: PeakHeat, see common data Background load: Background, see common data Material strength: 62 MPa
External longitudinal stress: 3 MPa Stress factor: 1 % Rupture criterion: UTS Initial inventory temperature: 9,85 C Initial shell temperature: 14 C Phase: gas Insulation: Foamglas; Thickness:,71 m; Length: 8,846 m Insulation: Carbowool_128; Thickness:,1 m; Length: 8,846 m Pipe 16-PR-23-11-CS71 Material: Duplex_22Cr Outer diameter:,4572 m Wall thickness:,127 m Length: 2,17 m Mill tolerance: 12 % Corrosion allowance:,3 m Peak load: PeakHeat, see common data Background load: Background, see common data Material strength: 62 MPa External longitudinal stress: 3 MPa Stress factor: 1 % Rupture criterion: UTS Initial inventory temperature: 9,85 C Initial shell temperature: 14 C Phase: gas Pipe 6-PR-23-154-CS71 Material: Duplex_22Cr Outer diameter:,2191 m Wall thickness:,71 m Length: 1,953 m Mill tolerance: % Corrosion allowance: m Peak load: PeakHeat, see common data Background load: Background, see common data Material strength: 62 MPa External longitudinal stress: 3 MPa Stress factor: 1 % Rupture criterion: UTS Initial inventory temperature: 9,85 C Initial shell temperature: 14 C Phase: liquid Pipe 12-PS-23-51-CS71 Material: Duplex_22Cr Outer diameter:,3747 m Wall thickness:,95 m Length: 25,589 m Mill tolerance: %
Components Corrosion allowance: m Peak load: PeakHeat, see common data Background load: Background, see common data Material strength: 62 MPa External longitudinal stress: 3 MPa Stress factor: 1 % Rupture criterion: UTS Initial inventory temperature: 9,85 C Initial shell temperature: 14 C Phase: liquid C1: 75,868 % C2: 1,594 % C3: 5,77988 % H2O: 5 % C4: 1,557 % IC4:,523613 % C1:,352432 % C8:,342362 % C5:,241668 % IC5:,231598 % C6:,53474 %
35 Background Peak 3 Heat Load, kw/m² 25 2 15 1 5 5 1 15 2 25 3 Figure 1: Heat loads for the vessel 35 Background PeakHeat 3 Heat Load, kw/m² 25 2 15 1 5 1 2 3 4 5 Figure 2: Heat loads for pipes
4 3 5 Maximum average temperature Pressure in Vessel 9 8 3 7 Pressure, kpa 2 5 2 1 5 1 6 5 4 3 2 5 1 2 4 6 8 1 12 14 16 Figure 3: Pressure in the vessel 6 9 5 UTS Calculated stress Maximum average temperature Maximum Longitudinal Stress 8 7 Stress, MPa 4 3 2 6 5 4 3 1 2 1 2 4 6 8 1 12 14 16 Figure 4: Stress in the vessel
9 8 7 Maximum steel temperature Minimum steel temperature BDV line after orifice 6 5 4 3 2 1 2 2 4 6 8 1 12 14 16 Figure 5: s 18 16 Gas temperature Oil temperature 14 12 1 8 6 4 2-2 2 4 6 8 1 12 14 16 Figure 6: Content temperatures
9 1 6 Liquid mass, kg 8 7 6 5 4 3 2 Oil mass Gas mass Water mass Steam mass Total mass 1 4 1 2 1 8 6 4 Gaseous mass, kg 1 2 2 4 6 8 1 12 14 16 9 Figure 7: Segment masses 8 7 Total absorbed heat flux Absorbed radiating heat flux Absorbed convective heat flux Heat flux, kw/m² 6 5 4 3 2 1 2 4 6 8 1 12 14 16 Figure 8: Absorbed heat flux
2 18 16 Release rate, kg/s 14 12 1 8 6 4 2 2 2 4 6 8 1 12 14 Figure 9: Maximum release rate Mass flow, kg/s 18 16 14 12 1 8 6 4 PSV 1-5 gas BDV 1 gas BDV 2-5 gas PSV 1-5 liquid BDV 1 liquid BDV 2-5 liquid Breakage 2 2 4 6 8 1 12 14 16 Figure 1: Valve flows
7 1 Stress, MPa 6 5 4 3 2 Ultimate stress Calculated stress Maximum Longitudinal Stress 9 8 7 6 5 4 3 1 2 1 2 4 6 8 1 12 14 16 Figure 11: Von Mises, pipe 6-PS-23-62-CS71 4 1 Pressure, kpa 35 3 25 2 15 1 Ductile pressure Calculated pressure 9 8 7 6 5 4 3 2 5 1 2 4 6 8 1 12 14 16 Figure 12: With hardening, pipe 6-PS-23-62-CS71
7 1 2 Stress, MPa 6 5 4 3 2 Ultimate stress Calculated stress Maximum Longitudinal Stress 1 8 6 4 1 2 2 4 6 8 1 12 14 16 Figure 13: Von Mises, pipe 16-PR-23-11-CS71 22 1 2 2 18 Ductile pressure Calculated pressure 1 Pressure, kpa 16 14 12 1 8 6 8 6 4 4 2 2 2 4 6 8 1 12 14 16 Figure 14: With hardening, pipe 16-PR-23-11-CS71
7 1 2 Stress, MPa 6 5 4 3 2 Ultimate stress Calculated stress Maximum Longitudinal Stress 1 8 6 4 1 2 2 4 6 8 1 12 14 16 Figure 15: Von Mises, pipe 6-PR-23-154-CS71 4 1 2 35 3 Ductile pressure Calculated pressure 1 Pressure, kpa 25 2 15 1 8 6 4 5 2 2 4 6 8 1 12 14 16 Figure 16: With hardening, pipe 6-PR-23-154-CS71
7 1 2 Stress, MPa 6 5 4 3 2 Ultimate stress Calculated stress Maximum Longitudinal Stress 1 8 6 4 1 2 2 4 6 8 1 12 14 16 Figure 17: Von Mises, pipe 12-PS-23-51-CS71 3 1 2 25 Ductile pressure Calculated pressure 1 Pressure, kpa 2 15 1 8 6 4 5 2 2 4 6 8 1 12 14 16 Figure 18: With hardening, pipe 12-PS-23-51-CS71