Vessfire Simulation Report. Rupture summary No ruptures occurred. Case Definition. Vessel 23-VG02A. Report generated:

Transcription

1 Vessfire Simulation Report Report generated: :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 %

2 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 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

3 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 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 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 CS71 Material: Duplex_22Cr Outer diameter:,3747 m Wall thickness:,95 m Length: 25,589 m Mill tolerance: %

4 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:, % C1:, % C8:, % C5:, % IC5:, % C6:,53474 %

5 35 Background Peak 3 Heat Load, kw/m² Figure 1: Heat loads for the vessel 35 Background PeakHeat 3 Heat Load, kw/m² Figure 2: Heat loads for pipes

6 4 3 5 Maximum average temperature Pressure in Vessel Pressure, kpa Figure 3: Pressure in the vessel UTS Calculated stress Maximum average temperature Maximum Longitudinal Stress 8 7 Stress, MPa Figure 4: Stress in the vessel

7 9 8 7 Maximum steel temperature Minimum steel temperature BDV line after orifice Figure 5: s Gas temperature Oil temperature Figure 6: Content temperatures

8 9 1 6 Liquid mass, kg Oil mass Gas mass Water mass Steam mass Total mass Gaseous mass, kg Figure 7: Segment masses 8 7 Total absorbed heat flux Absorbed radiating heat flux Absorbed convective heat flux Heat flux, kw/m² Figure 8: Absorbed heat flux

9 Release rate, kg/s Figure 9: Maximum release rate Mass flow, kg/s PSV 1-5 gas BDV 1 gas BDV 2-5 gas PSV 1-5 liquid BDV 1 liquid BDV 2-5 liquid Breakage Figure 1: Valve flows

10 7 1 Stress, MPa Ultimate stress Calculated stress Maximum Longitudinal Stress Figure 11: Von Mises, pipe 6-PS CS Pressure, kpa Ductile pressure Calculated pressure Figure 12: With hardening, pipe 6-PS CS71

11 7 1 2 Stress, MPa Ultimate stress Calculated stress Maximum Longitudinal Stress Figure 13: Von Mises, pipe 16-PR CS Ductile pressure Calculated pressure 1 Pressure, kpa Figure 14: With hardening, pipe 16-PR CS71

12 7 1 2 Stress, MPa Ultimate stress Calculated stress Maximum Longitudinal Stress Figure 15: Von Mises, pipe 6-PR CS Ductile pressure Calculated pressure 1 Pressure, kpa Figure 16: With hardening, pipe 6-PR CS71

13 7 1 2 Stress, MPa Ultimate stress Calculated stress Maximum Longitudinal Stress Figure 17: Von Mises, pipe 12-PS CS Ductile pressure Calculated pressure 1 Pressure, kpa Figure 18: With hardening, pipe 12-PS CS71