4.6 Erection of Plant Service Fuel and Gas Pipes
4.6.1 The erection of plant service fuel and gas pipes includes the erection of fuel oil pipes，natural gas pipes and hydrogen pipes and other flammable（inflammable）gas pipes and corresponding accessories in thermal power plants；the quality acceptance of the erection of the Supports and hangers in this section shall refer to the requirements of Table 4.5.2.
4.6.2 This clause is applicable to the quality acceptance of the erection of plant service fuel and gas pipes，whose acceptance criteria are shown in Table 4.6.2.
Table 4.6.2 Erection of plant fuel and gas pipes
Table 4.6.2（Continued）
Table 4.6.2（Continued）
Table 4.6.2（Continued）
4.6.3 This clause is applicable to the quality acceptance of the leak tests of plant service fuel and gas pipe whose acceptance criteria are shown in Table 4.6.3.
Table 4.6.3 Leak tests of plant service fuel and gas pipes in the plant
Table 4.6.3（Continued）
Table 4.6.3（Continued）
4.6.4 This clause is applicable to the quality acceptance of the cleaning of plant service fuel and gas pipe systems，whose acceptance criteria are shown in Table 4.6.4.
Table 4.6.4 Cleaning of the fuel and gas piping systems in plant
Table 4.6.4（Continued）
4.6.5 This clause is applicable to the erection process control and inspection of plant service fuel and gas pipes，which includes the following record tables.All those acceptance company columns not belonging to the acceptance scope in the record tables shall be marked with slash（/）.
1）Flow Rate Measurement Devices Erection Record Table-Table 4.4.9-3
2）Inspection Record of Pipes and Fittings-Table 4.4.9-4
3）Erection and Adjustment Record of Supports and hangers-Table 4.4.9-6
4）Valves Inspection（Maintenance）and Test Acceptance Record-Table 4.4.9-7
5）Hot State Commissioning Record of Safety Valves-Table 4.4.9-8
6）Adjustment and Acceptance Record of Electric Valves-Table 4.4.9-9
7）Concealed Works Acceptance and Certification Sheet-Table 4.4.9-10
8）Leak test Acceptance and Certification Sheet-Table 4.4.9-11
9）Inspection Record Table for Pipes before Pressure Test-Table 4.4.9-13
10）Piping System Purging（washing）Certification Sheet-Table 4.4.9-14
11）Inspection Table for Situation of Performing Mandatory Requirements-Table 4.4.9-15
12）Erection Record of Compensation Devices-Table 4.5.7