Vessfire Simulation Report

Report generated: 21.01.2014 13:08:17

Rupture summaryNo ruptures occurred.

Case DefinitionVessel 23-VG02A

Flame:Longitudinal start: 45 %Longitudinal end: 55 %Angle from top: 30°Exposed arc: 35°Impinging Flame: Yes

First blow-down valve:Diameter: 0,06344 mContraction factor: 80 %Delay: 0 min

BDV position:Longitudinal: 100 %Angular (from top): 0°

Blow-down line:Diameter: 0,1143 mWall thickness: 0,006 mLength: 5,148 m

Pressure safety valve:Type: SquareDiameter: 0,054 mContraction factor: 80 %

Longitudinal position: 82 %Angular position (from top): 0°Opening pressure: 6 500 kPa

External longitudinal stress: 30 MPaStress factor: 100 %Failure criterion: UTSMaterial: Duplex_22CrMaterial strength: 600 MPaOuter diameter: 3,426 mWall thickness: 0,044 mCorrosion allowance: 0 mLength: 6,437 mOperating pressure: 3 809 kPaOperating inventory temperature: 47,35 °COperating shell temperature: 25 °CHydrocarbon level: 1 mWater level: 0 mBackpressure: 100 kPaEnvironment temperature: 9,85 °CEmissivity: 85 %Orientation: Vertical

PipesCommon pipe data:

Heat load "Background"Environment temperature: 6,85 °CEmissivity: 83 %Heat-transfer coefficient: 30 W/m² KImpinging Flame: Yes

Heat load "PeakHeat"Environment temperature: 6,85 °CEmissivity: 83 %Heat-transfer coefficient: 100 W/m² KImpinging Flame: Yes

Maximum ruptured pipes: 0Contraction factor: 80 %

Pipe 6-PS-23-062-CS71Material: Duplex_22CrOuter diameter: 0,2191 mWall thickness: 0,0071 mLength: 8,846 mMill tolerance: 0 %Corrosion allowance: 0 mPeak load: PeakHeat, see common dataBackground load: Background, see common dataMaterial strength: 620 MPa

External longitudinal stress: 30 MPaStress factor: 100 %Rupture criterion: UTSInitial inventory temperature: 9,85 °CInitial shell temperature: 14 °CPhase: gasInsulation: Foamglas; Thickness: 0,0071 m; Length: 8,846 mInsulation: Carbowool_128; Thickness: 0,001 m; Length: 8,846 m

Pipe 16-PR-23-101-CS71Material: Duplex_22CrOuter diameter: 0,4572 mWall thickness: 0,0127 mLength: 2,107 mMill tolerance: 12 %Corrosion allowance: 0,003 mPeak load: PeakHeat, see common dataBackground load: Background, see common dataMaterial strength: 620 MPaExternal longitudinal stress: 30 MPaStress factor: 100 %Rupture criterion: UTSInitial inventory temperature: 9,85 °CInitial shell temperature: 14 °CPhase: gas

Pipe 6-PR-23-154-CS71Material: Duplex_22CrOuter diameter: 0,2191 mWall thickness: 0,0071 mLength: 1,953 mMill tolerance: 0 %Corrosion allowance: 0 mPeak load: PeakHeat, see common dataBackground load: Background, see common dataMaterial strength: 620 MPaExternal longitudinal stress: 30 MPaStress factor: 100 %Rupture criterion: UTSInitial inventory temperature: 9,85 °CInitial shell temperature: 14 °CPhase: liquid

Pipe 12-PS-23-051-CS71

Material: Duplex_22CrOuter diameter: 0,3747 mWall thickness: 0,0095 mLength: 25,589 mMill tolerance: 0 %

Corrosion allowance: 0 mPeak load: PeakHeat, see common dataBackground load: Background, see common dataMaterial strength: 620 MPaExternal longitudinal stress: 30 MPaStress factor: 100 %Rupture criterion: UTSInitial inventory temperature: 9,85 °CInitial shell temperature: 14 °CPhase: liquid

ComponentsC1: 75,868 %C2: 10,0594 %C3: 5,77988 %H2O: 5 %C4: 1,5507 %IC4: 0,523613 %C10: 0,352432 %C8: 0,342362 %C5: 0,241668 %IC5: 0,231598 %C6: 0,0503474 %

Figure 1: Heat loads for the vessel

Time, min

Hea

t Lo

ad,

kW/m

²

0 50 100 150 200 250 300

0

50

100

150

200

250

300

350 Background

Peak

Figure 2: Heat loads for pipes

Time, min

Hea

t Lo

ad,

kW/m

²

0 10 20 30 40 50

0

50

100

150

200

250

300

350 Background

PeakHeat

Figure 3: Pressure in the vessel

Time, min

Pres

sure

, kP

a

Tem

pera

ture

, °C

0 2 4 6 8 10 12 14 160

500

1 000

1 500

2 000

2 500

3 000

3 500

4 000

0

100

200

300

400

500

600

700

800

900

Maximum average temperature

Pressure in Vessel

Figure 4: Stress in the vessel

Time, min

Stre

ss,

MPa

Tem

pera

ture

, °C

0 2 4 6 8 10 12 14 160

100

200

300

400

500

600

0

100

200

300

400

500

600

700

800

900

UTS

Calculated stress

Maximum average temperature

Maximum Longitudinal Stress

Figure 5: Steel temperatures

Time, min

Tem

pera

ture

, °C

0 2 4 6 8 10 12 14 160

100

200

300

400

500

600

700

800

900

Maximum steel temperature

Minimum steel temperature

BDV line after orifice

Figure 6: Content temperatures

Time, min

Tem

pera

ture

, °C

0 2 4 6 8 10 12 14 16-20

0

20

40

60

80

100

120

140

160

180

200

Gas temperature

Oil temperature

Figure 7: Segment masses

Time, min

Liqu

id m

ass,

kg

Gas

eous

mas

s, k

g

0 2 4 6 8 10 12 14 160

1 000

2 000

3 000

4 000

5 000

6 000

7 000

8 000

9 000

0

200

400

600

800

1 000

1 200

1 400

1 600

Oil mass

Gas mass

Water mass

Steam mass

Total mass

Figure 8: Absorbed heat flux

Time, min

Hea

t flu

x, k

W/m

²

2 4 6 8 10 12 14 160

10

20

30

40

50

60

70

80

90

Total absorbed heat flux

Absorbed radiating heat flux

Absorbed convective heat flux

Figure 9: Maximum release rate

Time, min

Rel

ease

rat

e, k

g/s

0 2 4 6 8 10 12 140

2

4

6

8

10

12

14

16

18

20

Figure 10: Valve flows

Time, min

Mas

s flo

w,

kg/s

0 2 4 6 8 10 12 14 16

0

2

4

6

8

10

12

14

16

18

20

PSV 1-5 gas

BDV 1 gas

BDV 2-5 gas

PSV 1-5 liquid

BDV 1 liquid

BDV 2-5 liquid

Breakage

Figure 11: Von Mises, pipe 6-PS-23-062-CS71

Time, min

Stre

ss,

MPa

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

100

200

300

400

500

600

700

0

100

200

300

400

500

600

700

800

900

1 000

Steel temperature

Ultimate stress

Calculated stress

Maximum Longitudinal Stress

Figure 12: With hardening, pipe 6-PS-23-062-CS71

Time, min

Pres

sure

, kP

a

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

5 000

10 000

15 000

20 000

25 000

30 000

35 000

40 000

0

100

200

300

400

500

600

700

800

900

1 000

Steel temperature

Ductile pressure

Calculated pressure

Figure 13: Von Mises, pipe 16-PR-23-101-CS71

Time, min

Stre

ss,

MPa

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

100

200

300

400

500

600

700

0

200

400

600

800

1 000

1 200

Steel temperature

Ultimate stress

Calculated stress

Maximum Longitudinal Stress

Figure 14: With hardening, pipe 16-PR-23-101-CS71

Time, min

Pres

sure

, kP

a

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

2 000

4 000

6 000

8 000

10 000

12 000

14 000

16 000

18 000

20 000

22 000

0

200

400

600

800

1 000

1 200

Steel temperature

Ductile pressure

Calculated pressure

Figure 15: Von Mises, pipe 6-PR-23-154-CS71

Time, min

Stre

ss,

MPa

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

100

200

300

400

500

600

700

0

200

400

600

800

1 000

1 200

Steel temperature

Ultimate stress

Calculated stress

Maximum Longitudinal Stress

Figure 16: With hardening, pipe 6-PR-23-154-CS71

Time, min

Pres

sure

, kP

a

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

5 000

10 000

15 000

20 000

25 000

30 000

35 000

40 000

0

200

400

600

800

1 000

1 200

Steel temperature

Ductile pressure

Calculated pressure

Figure 17: Von Mises, pipe 12-PS-23-051-CS71

Time, min

Stre

ss,

MPa

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

100

200

300

400

500

600

700

0

200

400

600

800

1 000

1 200

Steel temperature

Ultimate stress

Calculated stress

Maximum Longitudinal Stress

Figure 18: With hardening, pipe 12-PS-23-051-CS71

Time, min

Pres

sure

, kP

a

Tem

pera

ture

, °C

2 4 6 8 10 12 14 160

5 000

10 000

15 000

20 000

25 000

30 000

0

200

400

600

800

1 000

1 200

Steel temperature

Ductile pressure

Calculated pressure