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. 2021 Aug 20;7(8):e07835. doi: 10.1016/j.heliyon.2021.e07835

Table 5.

Prioritizing basic risk items based on risk rating and fuzzy weight.

symbol Basic risk item VL L M H VH Risk Index Risk status
X41,3 Hot work with open flame 0.0000 0.2221 0.5288 0.1481 0.0000 0.4310 Moderate
X41,1 The fire of pipelines and nearby facilities 0.0000 0.1785 0.3642 0.1093 0.0000 0.3087 Moderate
X′42,1 Closing GOV 1050/1005 and increasing pressure above design pressure of pipeline down stream 0.0171 0.2117 0.2697 0.0205 0.0000 0.2032 Moderate
X'43,2 TPD 0.0950 0.1979 0.0851 0.0000 0.0000 0.0920 Favorable
X44,2 Marine anchor collision with sea lines 0.0925 0.1927 0.0828 0.0000 0.0000 0.0896 Favorable
X41,2 Electric induction of power lines 0.0067 0.0828 0.1055 0.0080 0.0000 0.0795 Favorable
X'41,3 FV001/006 failure 0.3305 0.2275 0.0000 0.0000 0.0000 0.0569 Very desirable
X'42,2 GASKET failure 0.0041 0.0506 0.0644 0.0049 0.0000 0.0485 Very desirable
X′41,2 Corrosion 0.0000 0.0225 0.0535 0.0150 0.0000 0.0436 Very desirable
X42,2 Lightning collision 0.5403 0.1567 0.0000 0.0000 0.0000 0.0392 Very desirable
X'41,1 MOV1044–1045 failure and launcher opening 0.0438 0.0796 0.0247 0.0000 0.0000 0.0323 Very desirable
X'43,1 Abrupt opening of the receiver door 0.0593 0.0803 0.0173 0.0000 0.0000 0.0287 Very desirable
X'42,3 The closure of any manual valve 0.3653 0.0767 0.0000 0.0000 0.0000 0.0192 Very desirable
X43,2 Static sparks 0.0378 0.0512 0.0110 0.0000 0.0000 0.0183 Very desirable
X42,1 War and sabotage 0.1204 0.0506 0.0000 0.0000 0.0000 0.0127 Very desirable
X43,1 Flame return from Flare 0.1372 0.0398 0.0000 0.0000 0.0000 0.0100 Very desirable
X44,1 PV001/002 failure and upstream pressure rise 0.0497 0.0343 0.0000 0.0000 0.0000 0.0086 Very desirable
X46,1 Toxic gas release from PSV on GOV 0.0070 0.0147 0.0063 0.0000 0.0000 0.0068 Very desirable
X45,1 Suddenly unlocking MOV1046 without balancing 0.0373 0.0257 0.0000 0.0000 0.0000 0.0064 Very desirable
X42,3 Negligence (cigarette, Matches etc) 0.0789 0.0221 0.0000 0.0000 0.0000 0.0055 Very desirable
X45,2 Natural disasters (earthquakes, tsunami…) 0.0237 0.0163 0.0000 0.0000 0.0000 0.0041 Very desirable