GB 50974-2014 Technical code for fire protection water supply and hydrant systems

General Provisions

• 第 1.0.1 条Clarify that this code aims to ensure the safety, reliability, technical advancement and economic rationality…
• 第 1.0.2 条This code specifies that it applies to the design, construction, acceptance, and maintenance of fire water su…
• 第 1.0.3 条Emphasize that the design, construction, acceptance, and maintenance of fire water supply and hydrant systems…
• 第 1.0.4 条The design, construction, acceptance, and maintenance of fire water supply and hydrant systems shall comply w…

Terminology

• 第 2.1.1 条Fire water source: water available for firefighting, including municipal water supply, fire water storage tan…
• 第 2.1.2 条Fire water tank: a facility for storing fire protection water, used in hotel buildings to ensure the water vo…
• 第 2.1.3 条High level fire water tank: a facility installed at a high point of the building to store water for initial f…
• 第 2.1.4 条Fire hydrant system: A fire suppression system consisting of fire hydrants, pipes, valves, etc., requiring fu…
• 第 2.1.5 条Indoor fire hydrant: A hydrant installed inside a building for use by personnel; areas such as hotel guest ro…
• 第 2.1.6 条Outdoor fire hydrant: a hydrant installed outside a building to supply water for fire engines; the area aroun…
• 第 2.1.7 条Fire pump: Equipment that provides pressure and flow for the fire water supply system; hotel buildings requir…
• 第 2.1.8 条Fire department connection: an interface for fire engines to supply pressurized water to the indoor fire prot…
• 第 2.1.9 条Fire water supply system: a water supply system composed of water sources, pipes, equipment, etc. Hotel build…
• 第 2.1.10 条Fire duration: the duration for which the fire protection system continuously supplies water; hotel buildings…

Fire water source

• 第 4.1.5 条Fire water sources shall ensure a continuous supply . The fire water sources of hotel buildings (especially h…
• 第 4.2.2 条Conditions for using the municipal water supply network as a water source . When the hotel uses the municipal…
• 第 4.3.1 条Conditions for setting up a fire water tank . When the municipal water supply network cannot meet the hotel's…
• 第 4.3.2 条Effective volume of the fire water tank . The tank volume shall meet the sum of the total indoor and outdoor …
• 第 4.3.5 条Make up water and freeze protection for the fire water tank. The hotel's fire water tank should be provided w…
• 第 4.3.7 条Fire water intake for the fire water tank . The hotel's fire water tank should be provided with an intake (or…
• 第 4.4.1 条Natural water sources as fire water sources . If there is a natural water source (such as a river or lake) ne…
• 第 4.4.4 条Freeze protection and contamination prevention for fire water tanks (cisterns) . Hotel rooftop fire water tan…

Water supply facilities

• 第 5.1.6 条Start/stop control of fire pumps: Fire pumps shall be started directly and automatically by signals such as t…
• 第 5.1.10 条Fire pump standby pump provision: Fire pumps shall be provided with a standby pump whose performance matches …
• 第 5.1.12 条Fire pump suction requirements: Fire pumps shall use flooded suction. A set of fire pumps shall have no fewer…
• 第 5.1.13 条Fire pump discharge pipe and pressure gauge: The discharge pipe of a fire pump shall be provided with a check…
• 第 5.2.1 条High level fire water tank installation scope: Class I high rise public buildings (including hotels) shall be…
• 第 5.2.2 条Effective volume of the high level fire water tank: For hotel buildings (Class I high rise public buildings),…
• 第 5.2.4 条High level fire water tank installation height: The high level fire water tank shall be installed at a locati…
• 第 5.2.6 条Environmental requirements for the high level fire water tank room: The high level fire water tank room shall…
• 第 5.3.2 条Design flow rate of jockey pump: The design flow rate of the jockey pump shall not be less than the normal le…
• 第 5.3.3 条Design pressure of jockey pump: The design pressure of the jockey pump shall maintain the hydrostatic pressur…
• 第 5.3.4 条Requirements for jockey pump installation: A standby jockey pump shall be provided, typically of the same mod…
• 第 5.4.1 条Scope of fire pump adapters: indoor fire hydrant water supply systems in the following locations shall be equ…
• 第 5.4.3 条Number of fire department connections: The water supply flow of each fire department connection should be cal…
• 第 5.4.7 条Fire department connection location: Fire department connections shall be installed outdoors at locations con…

Fire hydrant system

• 第 7.4.5 条The layout of indoor fire hydrants in hotel buildings shall ensure that the full water jets of two fire nozzl…
• 第 7.4.6 条For hotel buildings (high rise), the dynamic pressure at the fire hydrant outlet shall not be less than 0.35 …
• 第 7.4.7 条The dynamic pressure at the fire hydrant outlet shall not exceed 0.50MPa; when it exceeds 0.70MPa, a pressure…
• 第 7.4.8 条For hotel buildings (high rise), the spacing between indoor fire hydrants shall not exceed 30 m; for podium a…
• 第 7.4.9 条Fire hydrants should be installed in conspicuous and easily accessible locations such as near corridors and s…
• 第 7.4.10 条The opening angle of the fire hydrant cabinet door shall not be less than 120°; the center of the hydrant out…
• 第 7.4.12 条Test and inspection fire hydrants shall be provided on the roofs of hotel buildings (mandatory for high rise …
• 第 7.4.15 条Indoor fire hydrants shall be provided in the fire elevator lobby of hotel buildings (high rise), and shall b…

Pipe network

• 第 8.1.3 条Fire water supply pipes shall be divided into several independent sections by valves, and the number of fire …
• 第 8.1.4 条The indoor fire water supply pipe network should be arranged in a loop; for hotel buildings, when the design …
• 第 8.1.5 条The indoor fire hydrant system pipe network should be equipped with pump adapters, and the connecting pipe be…
• 第 8.1.6 条The indoor fire water supply pipe network shall be divided into several independent sections by valves, and t…
• 第 8.1.7 条Fire water supply pipes shall use corrosion resistant materials such as hot dip galvanized steel pipes or coa…
• 第 8.1.8 条The design flow velocity of fire water supply pipes should not exceed 2.5 m/s, and under no circumstances sho…
• 第 8.2.1 条The working pressure of the fire water supply piping shall meet the static and residual pressure requirements…
• 第 8.2.2 条Fire water supply pipes shall be equipped with valves, check valves, pressure reducing valves and other acces…
• 第 8.2.3 条Fire water supply pipes shall be equipped with pressure relief valves that automatically relieve pressure whe…
• 第 8.2.4 条The connection method of fire water supply pipes shall comply with code requirements, such as grooved connect…
• 第 8.3.1 条Fire water supply pipes shall undergo a hydrostatic test at 1.5 times the working pressure and not less than …
• 第 8.3.2 条Fire water supply pipes shall be flushed to ensure water quality is clean; in hotel buildings, system commiss…
• 第 8.3.3 条The insulation layer of fire water supply pipes shall be made of non combustible materials; in hotel building…

Control and Operation

• 第 11.0.1 条The fire pump control cabinet shall be installed in the fire pump room or a dedicated fire control room; for …
• 第 11.0.2 条Fire pumps shall not be provided with an automatic stop control function; stopping the pump shall be manually…
• 第 11.0.5 条Fire pumps shall be capable of manual start/stop and automatic start. The hotel fire control room (or duty ro…
• 第 11.0.7 条In hotel buildings, the fire control room or duty room shall be provided with start/stop buttons for fire wat…
• 第 11.0.9 条The fire pump control cabinet shall be provided with a mechanical emergency pump start function, and shall en…
• 第 11.0.12 条The fire pump control cabinet shall be provided with a manual/auto selector switch, which shall be set to the…
• 第 11.0.14 条During a fire, fire pumps shall run at power frequency and shall be started directly at power frequency; when…
• 第 11.0.17 条The automatic transfer time between the dual power supplies of fire pumps shall not exceed 2s; when switching…

Control and operation

• 第 11.0.4 条Fire pumps shall be started directly and automatically by signals such as the pressure switch installed on th…

Construction

• 第 12.3.2 条The installation of fire pumps shall meet the design requirements. The discharge pipe shall be provided with …
• 第 12.3.3 条The construction and installation of the fire water pool and the high level fire water tank shall meet the de…
• 第 12.3.5 条The installation of fire water supply pipes (including indoor hydrant pipes) shall comply with the design req…
• 第 12.3.6 条Indoor fire hydrant cabinets shall be installed straight and securely, with the center of the hydrant valve o…
• 第 12.3.7 条The installation of fire pump adapters shall proceed in the order of the inlet, body, connecting pipe, check …
• 第 12.3.9 条Pressure testing and flushing of the fire water supply system shall meet the design requirements. After pipel…
• 第 12.3.10 条After the fire water supply system is installed, system commissioning shall be carried out. For hotel buildin…
• 第 12.3.11 条Construction records, concealed works acceptance records, and pressure test reports for the fire water supply…

Commissioning

• 第 13.1.4 条Fire pump commissioning: when started automatically or manually, it should be put into normal operation withi…
• 第 13.1.5 条Pressure maintaining pump commissioning: Before simulating the start of the fire main pump, the pressure main…
• 第 13.1.6 条Pressure reducing valve commissioning: for proportional pressure reducing valves, the ratio of inlet pressure…
• 第 13.1.8 条Fire hydrant commissioning: The solid water column of the test hydrant (usually installed on the roof or the …
• 第 13.1.9 条System interlock commissioning: when any fire hydrant button or alarm valve pressure switch is activated, the…
• 第 13.1.10 条Pipe network pressure commissioning: the static pressure at the hydrant at the most unfavorable point of the …
• 第 13.1.11 条Fire water tank commissioning: The effective capacity of the high level fire water tank shall meet the water …
• 第 13.1.12 条Pump adapter commissioning: a water filling test shall be conducted to ensure the interface connected to the …

Acceptance

• 第 13.2.1 条After system completion, project acceptance inspection must be carried out; systems that fail acceptance insp…
• 第 13.2.4 条The models, specifications, and quantities of major equipment such as fire pumps, jockey pumps, fire water re…
• 第 13.2.6 条Fire pumps shall use self priming (flooded) suction, and a test pipe with a DN65 test valve shall be installe…
• 第 13.2.8 条The static pressure at fire hydrant outlets shall comply with design requirements (typically in hotel buildin…
• 第 13.2.9 条The installation position, spacing, protection radius, and outlet orientation of indoor fire hydrants shall c…
• 第 13.2.10 条The start and stop functions of the fire pumps should be normal, the switching between the main and standby p…
• 第 13.2.11 条The fire pump control cabinet shall be installed in the fire pump room and shall be provided with waterproof …
• 第 13.2.12 条The number and installation locations of fire water pump adapters shall comply with the design requirements, …
• 第 13.2.13 条The effective volume, water level display device, overflow pipe, drain pipe, etc. of the fire water tank and …
• 第 13.2.14 条The hydrostatic strength test and tightness test results of the system pipe network shall be qualified, and t…
• 第 13.2.15 条The solid water column length at the most unfavorable fire hydrant shall meet the design requirements (typica…
• 第 13.2.16 条The actuation signal of the fire hydrant button (if provided) shall be capable of directly starting the fire …
• 第 13.2.17 条System linkage test shall be normal: when a fire hydrant button is pressed or the fire linkage controller is …
• 第 13.2.18 条Drainage facilities in the fire pump room should be complete, the floor should have a drainage slope, and the…

Maintenance

• 第 14.0.3 条Maintenance management of fire water sources: conduct a monthly inspection of the water levels in fire reserv…
• 第 14.0.4 条Maintenance management of fire pumps: simulate the automatic control conditions of the pump for automatic sta…
• 第 14.0.5 条Maintenance management of the jockey pump: Check the pump stop and pump start pressures and the number of pum…
• 第 14.0.6 条Maintenance management of pressure water tanks: check the pressure and effective volume of the pressure water…
• 第 14.0.7 条Valve and pipe maintenance: Check the open/closed status of system control valves (such as signal valves and …
• 第 14.0.8 条Fire hydrant maintenance management: Conduct a comprehensive quarterly inspection of the fire nozzles, hoses,…
• 第 14.0.9 条Maintenance management of pump adapters: Inspect the interfaces and accessories of pump adapters quarterly to…
• 第 14.0.10 条System linkage test: Conduct a linkage test on the fire water supply system once a year, simulate a fire sign…
• 第 14.0.11 条Fault handling: When a system fault occurs, maintenance shall be organized immediately to restore normal func…
• 第 14.0.12 条Maintenance records: All maintenance, inspection, testing, and troubleshooting shall be documented in writing…
• 第 14.0.3 条As a high occupancy venue, a hotel's fire water supply system must remain highly reliable. Among the above cl…

Engineering reference only — verify against project conditions and the latest codes.