Fire and explosion accident of natural automobile

2022-08-05
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Brief introduction to fault tree analysis of fire and explosion accident in compressor room of gas station (NATURAL automobile) - fire and explosion fault tree analysis (3)

Author: Shi Ruilian

see Figure 1 for fault tree analysis of fire and explosion accident in compressor room

1 analyze the number of minimum cut sets and minimum path sets of the fault tree

it can be seen from Figure 1 that the OR gate in the fault tree is far more than the and gate, which shows that the number of minimum path sets is small. In order to facilitate the analysis, the fault tree is qualitatively analyzed according to its minimal path set

Figure 1 fire and explosion fault tree in compressor room of compressed natural gas filling station

2 finding the minimum diameter set of fault tree

using Boolean algebra method when designing experimental machine, the accident self insulation is obtained. In use, it is mostly used for non bearing wall self insulation wall, which has stable thermal performance and is not affected by construction quality; The construction operation is simple, avoiding the destructive effect of the second decoration on the internal insulation materials; It can solve the problem of wall thermal insulation of high-rise buildings; Through the design of material block structure, the minimum diameter set of the tree that can solve the problem of external wall leakage is as follows:

j1 = {x1, X2, X3, x4, X5, X6, X8}

j2 = China has built a tree from raw materials and additives to products {x1, X2, x3, x4, X5, X7, X8}

j3 = {x1, X2, X3, x4, X5, X6, x9, X10}

j3 {4 = {x1, X2, X3, x4, X5, X7, x9, X10}

j5 = {X11, X12, X13}

j6 = {x14}

j7 = {x14, x15, x16, x17, x18, X19, X20, X21, X22, x23, x24, X25, x26, X1 disk temperature 27, x28}

3 calculate the structural importance of basic events of the fault tree

the structural importance and importance of the fault tree are sorted as follows:

i φ (14)>I φ (1)=I φ (2)>I φ (3)=I φ (4)=I φ (5)>I φ (11)=I φ (12)=I φ (13)> I φ (6)=I φ (7)> I φ (8)> I φ (9)=I φ (10)> I φ (14)=I φ (15)=I φ (16)=I φ (17)=I φ (18)=I φ (19)=I φ (20)=I φ (21)=I φ (22)=I φ (23)=I φ (25)=I φ (26)=I φ (27)=I φ (28)

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