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

Table 3

Literature collection on the main risk factors of the integrated corridor O&M management process.

Serial number	Risk category	Literature sources
1	Unclear management responsibilities and poor safety awareness	Literature [10]
2	The many management units make coordination difficult	Literature [11, 12]
3	File management in disarray	Literature [12]
4	Inadequate and unregulated management standards	Literature [13, 14]
5	Improper handling by personnel	Literature [14]
6	Invasion by persons, theft	Literature [14]
7	Inadequate routine maintenance	Literature [32]
8	Poor O&M equipment and facilities	Literature [32]
9	Technical immaturity	Literature [33]
10	External forces, third party construction damage	Literature [34]
11	Corroded pipes, substandard pipe welding	Literature [35]
12	Leaking pipes	Literature [34, 35]
13	Quality of products and installations such as valves and fittings	Literature [36]
14	Uneven settlement of pipe corridor, structural stability	Literature [37]
15	Interaction between pipelines and dangerous pipeline build-up	Literature [37]
16	Fires, explosions, etc. caused by oil, gas, etc.	Literature [38]
17	Natural disasters such as earthquakes, floods and mudslides	Literature [39]
18	Urban construction, road excavation	Literature [40, 41]
19	Air humidity, oxygen and toxic gas levels inside the corridor	Literature [38, 41]
20	Waterproofing of pipe galleries, density of drainage outlets	Literature [42]
21	Inadequate ventilation, lighting and firefighting facilities	Literature [43]
22	Dynamic update of underground pipeline information is not timely	Literature [44, 45]
23	No linkage of information above and below ground	Literature [45]
24	Insufficient intelligent control	Literature [45]
25	Poor communication	Literature [45]