Page 340 - Pipeline Risk Management Manual Ideas, Techniques, and Resources

Case studies 14317
Damage Cases If Failure Occurs

Fatality
5000 BTUkr ft2
Eventual fire
0 Injury
1

1

0 200 400 600 800 1000
Distance from Source
Figure 14.4 Relative probabilities of three possible hazard zones.

Table 14.42 Results of modeling for Case Study B

Pressure Hole size Release rate Ignition Downwinddistance to Downwind distance to
(Mpa) (mm) (W) probability 6.3 kW/m* 15.6 kW/m2
m? m?
3 5 0.07 0.0029 0.3 N.A.
25 1.83 0.023 10 1.3
70 14.32 0.0861 32.2 14.9
100 29.23 0.1362 46.4 22.5
150 65.78 0.2293 68.8 34.7
5.6 5 0.13 0.0043 2.1 N.A.
25 3.35 0.0339 14.3 4.8
70 26.16 0.1268 43.5 21
100 53.39 0.2005 61.5 30.8
150 120.12 0.3 91.8 46.8
7 5 0.17 0.0049 1 N.A.
25 4.16 0.039 16.1 6
70 32.53 0.1459 48.3 23.6
100 66.39 0.2306 68.4 34.4
150 149.38 0.3 101.6 52.2
8.5 5 0.2 0.0056 1.6 N.A.
25 5.04 0.0441 18.1 7.1
70 39.36 0.1649 52.7 26.1
100 80.33 0.2606 75.2 37.8
150 180.73 0.3 111.3 57.6
15 5 0.35 0.008 2.9 N.A.
25 8.82 0.0631 24.4 10.7
70 68.94 0.2363 69.3 34.9
100 140.7 0.3 97.7 50.3
150 316.58 0.3 144.5 76.2