Risk Evaluation of Urban Integrated Pipe Corridor Operation and Maintenance Based on Improved AHP-CIM Model

Table 5

Risk rating probability table for the operation and maintenance of the northern ring tunnel integrated corridor in the Tongzhou canal core area.

Risk indicators		Risk level probability
		Small	Smaller	Moderate	Larger	Large
Management levelB1	Clarity of management responsibilitiesC1	0.0	0.0	0.3	0.2	0.5
	Soundness of rules and regulationsC2	0.0	0.0	0.2	0.5	0.3
	Personnel security awarenessC3	0.0	0.0	0.2	0.4	0.4
	Training of personnelC4	0.1	0.1	0.2	0.3	0.3
	Organizational coordination and emergency response capabilitiesC5	0.0	0.0	0.3	0.3	0.4
Corridor bodyB2	Compliance of design and construction with O&M requirementsC6	0.0	0.1	0.1	0.3	0.5
	Uneven SettlementC7	0.2	0.0	0.5	0.2	0.1
Corridor entry pipelinesB3	Explosive fires caused by pipelinesC8	0.3	0.1	0.3	0.2	0.1
	Timely installation and maintenance of valve fittingsC9	0.1	0.0	0.1	0.2	0.6
	Pipeline corrosionC10	0.1	0.1	0.4	0.2	0.2
	Leaking pipesC11	0.2	0.1	0.5	0.1	0.1
Environmental factorsB4	Natural disasters such as earthquakes, floods and mudslidesC12	0.5	0.1	0.3	0.1	0.0
	Third party construction such as road excavation for urban constructionC13	0.4	0.2	0.4	0.0	0.0
	Internal environment of the corridorC14	0.0	0.1	0.6	0.2	0.1
	People, animals trespassingC15	0.5	0.1	0.3	0.1	0.0
Equipment and facilitiesB5	Adequacy of ventilation, lighting and fire-fighting facilitiesC16	0.1	0.0	0.2	0.4	0.3
	Is the communication signal clear?C17	0.1	0.0	0.5	0.2	0.2
	Is the information above and below ground linkedC18	0.1	0.0	0.6	0.1	0.2
	Is the equipment and facilities poorC19	0.0	0.1	0.4	0.3	0.2