Construction of Risk Evaluation Index System for Power Grid Engineering Cost by Applying WBS-RBS and Membership Degree Methods

Table 1

Preliminary identification of risk factors in the entire process of power grid engineering cost.

The first-level indicator	The second-level indicator	The third-level indicator
Risk of investment decision (R1)	Risk of power grid planning (R11)	Risk of power load forecasting (R111), risk of economic situation evaluation (R112)
	Risk of planning of power grid capital construction project (R12)	Risk of scarcity of capital construction land resource (R121), risk of planning connection for power grid engineering cities (R122), risk of planning and coordination in cross-sectoral engineering (R123), risk of planning of supporting projects for power grid construction (R124)
	Risk of handling of preliminary documents (R13)	Risk of law and policy (R131)
Risk of design (R2)	Risk of project establishment and research in power grid capital construction (R21)	Risk of purchase price of capital construction equipment (R211), risk of participation in power grid engineering audit (R212), risk of young crop compensation for power grid capital construction project (R213), risk of selection of design company (R214)
	Risk of project establishment and approval in power grid capital construction (R22)	Risk of project approval cycle (R221), risk of allocation of power grid engineering approval personnel (R222)
Risk of bidding (R3)	Risk of power grid engineering technology (R31)	Risk of experience of tendering and bidding companies (R311), risk of technical level of construction company (R312)
	Risk of power grid engineering finance (R32)	Risk of inner ability to pay wages in advance of construction companies (R321), risk of target profit margin (R322)
Risk of construction (R4)	Risk of project change in power grid capital construction (R41)	Risk of project change notice (R411), risk of tracking of capital construction project planning (R412)
	Risk of cost change in power grid capital construction (X42)	Risk of land acquisition fund (R421), risk of machinery, material and labor cost (R422)
Risk of final accounts (R5)	Risk of final accounts in power grid engineering (R51)	Risk of final accounts (R511), risk of engineering payment (R512)
	Risk of audit in power grid engineering (R52)	Risk of audit quality of final accounts (R521), risk of audit of final accounts (R522), risk of separate audit of “quantity and price” in final accounts (R523)
	Risk of postevaluation for power grid engineering (R53)	Risk of completion rate of power grid engineering (R531), risk of evaluation after project completion (R532)