Risk Assessment of a Wind Turbine Using an AHP-MABAC Approach with Grey System Theory: A Case Study of Morocco

Table 5

Linguistic terms and the evaluation scale for “severity” [43, 49, 64].

Failure effect	Code	Grey value	Severity effect
Very minor	(VM)	[1, 3]	Effect is not noticed’
Minor	(MI)	[2, 4]	Very slight effect noticed’
Low	(L)	[3, 5]	Slight effect causing annoyance’
Moderate	(MO)	[4, 6]	Moderate effected and maintenance is required’
Significant	(S)	[5, 7]	Significant effect and system performance is degraded’
Major	(MA)	[6, 8]	Major effect and system performance is affected’
Extreme	(E)	[7, 9]	Extreme effect, system inoperable, and safety issue’
Hazardous	(H)	[8, 10]	“Critical effect and system safety risk”
Very hazardous	(VH)	[9, 10]	“Higher severity ranking of a potential failure mode”