2　术语和符号

• 2.1　术语

• 2.2　符号

6　风险等级确定

• 6.1　评估单元

• 6.2　失效可能性

• 6.3　失效后果严重性

• 6.4　风险等级划分及分类管理

附录A　综合管廊燃气管道规划可研阶段失效可能性评分表

• A.1　层级指标

• A.2　层级指标评分

附录B　综合管廊燃气管道运维管理阶段失效可能性评分表

• B.1　层级指标

• B.2　层级指标评分

附录C　综合管廊热力管道运维管理阶段失效可能性评分表

• C.1　层级指标

• C.2　层级指标评分

附录D　综合管廊燃气管道失效后果严重性评分表

• D.1　层级指标

• D.2　层级指标评分

附录E　综合管廊热力管道失效后果严重性评分表

• E.1　层级指标

• E.2　层级指标评分

2　Terms and symbols

• 2.1　Terms

• 2.2　Symbols

6　Risk level determination

• 6.1　Evaluation unit

• 6.2　Failure probability

• 6.3　Failure consequence severity

• 6.4　Risk level division and classification management

Appendix A　Scoring table of failure probability in planning and feasibility study stage of gas pipeline in utility tunnel

Appendix B　Scoring table of failure probability in operation and maintenance management stage of gas pipeline in utility tunnel

Appendix C　Scoring table of failure probability in operation and maintenance management stage of heating pipeline in utility tunnel

Appendix D　Scoring table of failure consequence severity of gas pipeline in utility tunnel

Appendix E　Scoring table of failure consequence severity of heating pipeline in utility tunnel