GB50974-2014消防给水及消火栓系统技术规范(7)

GB50974-2014消防给水及消火栓系统技术规范

6.2 vertical zone of water supply…………………………………………………………….33 7 Hydrant systems……………………………………………………………………………36

7.1 Types of system……………………………………………………………………………36

7.2 Municipal hydrant…………………………………………………………………………36

7.3 Outdoor hydrant…………………………………………………………………………...37

7.4 Indoor hydrant……………………………………………………………………………..38

8 Pipeline works ……………………………………………………………………………....41

8.1 General requirement ……………………………………………………………………..41

8.2 Pipeline design…………………………………………………………………………….42

8.3 Valves and others………………………………………………………………………….44

9 Fire protection drainage……………………………………………………………………..46

9.1 General requirement………………………………………………………………………46

9.2 Ordinary area………………………………………………………………………………46

9.3 Toxic and hazardous area………………………………………………………………….47 10 Hydraulic calculation……………………………………………………………………….48

10.1 Hydraulic calculation……………………………………………………………………..48

10.2 Hydrant …………………………………………………………………………………..51 10.3 Pressure reduction ……………………………………………………………………….52 11 Control and operation………………………………………………………………………54

12 Installation………………………………………………………………………………..56 12.1 General requirement…………………………………………………………………… 56 12.2 Admission Inspection……………………………………………………………………57 12.3 Installation ………………………………………………………………………………61 12.4 System pressure Testing and flush washing………………………………………………73 13 System commissioning and acceptance…………………………………………………… 77