Electrical Fire Dynamic Risk Assessment for High-Rise Buildings Based on Variable Fuzzy Set Theory and Bayesian Network

Table 2

Basic events for electrical fire risk assessment of high-rise buildings.

Top event	Factors categories	Root event	Bottom factors
Electrical fire risk A	Electrical line failure B1	Line short circuit risk level C1	D1, D2, and D3
		Line overload risk level C2	D1, D4, and D5
		Risk level of line grounding fault C3	D2 and D6
		Hidden danger of line fault arc C4	D2 and D7
	Electrical equipment failure B2	Operation risk of distribution equipment C5	S1, S2, and S3
		Operation risk of electrical equipment C6	S4, S5, and S6
		Risk of electrical equipment placement C7	S7, S8, and S9
	Building fire prevention capacity B3	Building’s structure risk C8	S10, S11, and S12
		Plane layout risk C9	S13, S14, S15, and S16
	Fire protection facilities capability B4	Fire station risk C10	S17 and S18
		Reliability risk of fire protection system C11	S19, S20, and S21
	Ability of evacuation safety management B5	Safety management system C12	S22 and S23
		Evacuation routes and evacuation facilities C13	S24, S25, and S26
		Fire emergency plan and exercise C14	S23 and S27