GB 50263-1997 Specification for construction and acceptance of gas fire extinguishing systems GB50263-97
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Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
50263-97
Code for installation and acceptance of gas fire-extinguishing systems
1997-02-24
State Administration of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
1997-08-01
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code for installation and acceptance of gas fire-extinguishing systems
GB50263-97
Code for installation and acceptance of gas fire-extinguishing systems systems
Editor department: Ministry of Public Security of the People's Republic of ChinaApproval department: Ministry of Construction of the People's Republic of ChinaEffective date: August 1, 1997
1997 Bei
Engineering construction standard full text information system
Engineering construction standard full text information system
Notice on the release of the national standard "Gas fire extinguishing system construction and acceptance specification"
Jianbiao [1997] No. 36
According to the requirements of the State Planning Commission's document [1989] No. 30, the "Gas Fire Extinguishing System Construction and Acceptance Specification" jointly formulated by the Ministry of Public Security and relevant departments has been reviewed by relevant departments. The "Gas Fire Extinguishing System Construction and Acceptance Specification" GB50263-97 is now approved as a mandatory national standard and will be implemented from August 1, 1997. The Ministry of Public Security is responsible for the management of this specification, and the Ministry of Public Security's Tianjin Fire Science Research Institute is responsible for its specific interpretation, and the Ministry of Construction's Standards and Quotas Research Institute is responsible for its publication and distribution.
Ministry of Construction of the People's Republic of China
February 24, 1997
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2 Construction Preparation
General Provisions
System Component Inspection
General Provisions
Installation of Fire Extinguishing Agent Storage Containers
Manufacturing and Installation of Collecting Pipes
Installation of Selector Valves
Installation of Valve Drive Devices
Construction of Fire Extinguishing Agent Delivery Pipelines
Purge and Test of Fire Extinguishing Agent Delivery Pipelines and installation of paint nozzles
-General provisions
General provisions
Acceptance of protection area and storage room
Equipment acceptance
System function acceptance
Maintenance management
Appendix A
Appendix B
Storage pressure of fire extinguishing agent at different temperatures
Construction record of gas fire extinguishing system
Intermediate acceptance record of concealed project
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Appendix D
Appendix E
Gas Fire Extinguishing System Commissioning Report
Cicsessscs
Gas Fire Extinguishing System Completion Acceptance Report
Appendix F
Explanation of Terms Used in This Code
Additional Notes
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Engineering Construction Standard Full Text Information System
1.0.1. This code is formulated to ensure the construction quality of the gas fire extinguishing system and protect the safety of people and property in the installation site.
2 This specification applies to the construction, acceptance and maintenance management of carbon dioxide fire extinguishing systems, halon 1211 fire extinguishing systems and halon 1301 fire extinguishing systems installed in industrial and civil buildings.
1.0.3 The construction and acceptance of gas fire extinguishing systems shall comply with relevant national laws, regulations and policies, and be safe, practical, technologically advanced and economically reasonable. 1.0.4 In addition to implementing the provisions of this specification, the construction and acceptance of gas fire extinguishing systems shall also comply with the provisions of current national standards and specifications. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Construction Preparation
2.1 General Provisions
2.1.1 The following technical information shall be available before the construction of a gas fire extinguishing system: 2.1.1.1 Design drawings, design specifications, and instructions for use and maintenance of the system and its main components.
2.1.1.2Product factory certificates and inspection reports issued by the National Quality Supervision, Inspection and Testing Center for system components such as container valves, selector valves, check valves, nozzles and valve drive devices; factory inspection reports and certificates for fire extinguishing agent delivery pipelines and pipeline accessories. 2.1.1.3Products used in the system that cannot be retested, such as safety diaphragms, etc., should have inspection reports and certificates for the same batch of products issued by the manufacturer. 2The construction of the gas fire extinguishing system should meet the following conditions: 2.1.2
2.1.2.1The setting conditions of the protection area and the fire extinguishing agent storage bottle room are consistent with the design. 2.1.2.2
2The system components and main materials are complete, and their varieties, specifications and models meet the design requirements.
3The embedded parts and holes required for the system meet the design requirements. 2.2 System component inspection
2.2.1 Before the construction of the gas fire extinguishing system, the appearance of the system components such as the fire extinguishing agent storage container, container valve, selection valve, check valve, nozzle and valve drive device shall be inspected and shall comply with the following provisions:
2.2.1.1 The system components shall be free of collision deformation and other mechanical damage. 2.2.1.2 The protective coating on the exposed non-machined surface of the components shall be intact. 2.2.1.3 All exposed interfaces of the components shall be equipped with protective plugs and covers, and shall be well sealed, and the interface threads and flange sealing surfaces shall be free of damage.
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Engineering Construction Standard Full Text Information System
2.2.1.4 The nameplate shall be clear, and its content shall comply with the provisions of the corresponding current national standards "Design Specifications for Halon 1211 Fire Extinguishing Systems" GBJ110, "Design Specifications for Halon 1301 Fire Extinguishing Systems) GB50163 and "Design Specifications for Carbon Dioxide Fire Extinguishing Systems" GB50193. 2.2.1.5 The specifications of the fire extinguishing agent storage containers protecting the same protection zone shall be consistent, and the height difference shall not exceed 20mm.
2.2.1.6 The specifications of the gas storage containers of the pneumatic drive device shall be consistent, and the height difference shall not exceed 10mm.
2.2.2 The filling amount and filling pressure in the fire extinguishing agent storage container shall be checked before the installation of the gas fire extinguishing system, and shall comply with the following provisions: 2.2.2.1 The filling amount of the fire extinguishing agent storage container shall not be less than the designed filling amount, and shall not exceed 1.5% of the designed filling amount.
2.2.2.2 The actual pressure in the halogenated hydrocarbon fire extinguishing agent storage container shall not be lower than the storage pressure at the corresponding temperature, and shall not exceed 5% of the storage pressure. 2.2.2.3 The storage pressure of the fire extinguishing agent at different temperatures shall be determined in accordance with Appendix A of this specification.
Note: The pressure not specified in this specification refers to the gauge pressure. 3 Before installing the gas fire extinguishing system, the selector valve, liquid check valve, high-pressure hose 2.2.3
and the gas check valve in the valve drive device shall be subjected to water pressure strength test and gas pressure tightness test one by one, and shall comply with the following provisions:
2.2.3.1 The test pressure of the water pressure strength test shall be 1.5 times the design working pressure of the system components, and the test pressure of the gas pressure tightness test shall be the design working pressure of the system components.
2.2.3.2 When conducting the water pressure strength test, the water temperature shall not be lower than 5℃. After reaching the test pressure, the pressure stabilization time shall not be less than min, and the test piece shall not be deformed during the pressure stabilization period. 2.2.3.3 The gas pressure tightness test shall be carried out after the water pressure strength test. The pressurized medium can be air or nitrogen. During the test, the system components should be immersed in water. After reaching the test pressure, the pressure stabilization time shall not be less than 5min, and no bubbles shall overflow from the test piece during the pressure stabilization period. 2.2.3.4 After the system components are tested and qualified, they should be dried in time and all exposed interfaces should be sealed.
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2.2.4 Before installing the gas fire extinguishing system, the valve drive device should be inspected and should comply with the following regulations:
2.2.4.1 The power supply voltage of the electromagnetic drive device shall meet the system design requirements. Check the electromagnetic core after power on. Its stroke shall meet the system startup requirements and the action shall be flexible and without obstruction.
2 The gas pressure in the storage container of the pneumatic drive device shall not be lower than the design pressure 2.2.4.2
and shall not exceed 5% of the design pressure. 2.2.4.3 The one-way valve core in the pneumatic drive device shall open and close flexibly without obstruction.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Construction
3.1 General Provisions
3.1.1 The construction of the gas fire extinguishing system shall be carried out in accordance with the design and construction drawings and relevant technical documents, and shall not be changed at will. When modifications are required, the original design unit shall agree. 3.1.2 The construction of the gas fire extinguishing system shall keep construction records in accordance with the contents specified in Appendix B of this specification. Pipes under the floor of the protection area, on the ceiling or in other hidden knocking areas should be recorded in the intermediate acceptance of concealed works according to the contents specified in Appendix C of this specification. The table forms of Appendix B and Appendix C of this specification can be adjusted according to the structural form of the gas fire extinguishing system and the specific conditions of the protection area. 3.1.3 In addition to complying with the provisions of this specification, the production of manifolds, the installation of valves and high-pressure hoses, the production and installation of pipelines and brackets, and the purging, testing and painting of pipelines should also comply with the relevant provisions of the current national standard "Industrial Pipeline Engineering Construction and Acceptance Specifications" GBJ235.
2 Installation of fire extinguishing agent storage containers
Fire extinguishing agent filling and pressurization in storage containers should be completed at the production plant. 3.2.2
The distance between the operating surface of the storage container and the wall or operating surface should not be less than the pressure gauge on the storage container should face the operating surface, and the installation height and direction should be The support and frame of the storage container should be firmly fixed, and anti-corrosion treatment measures should be taken. The name of the fire extinguishing agent specified in the design and the number of the storage container shall be marked on the front of the storage container.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.3 Manifold Fabrication and Installation
3.3.1 The manifold of the combined distribution system should be manufactured by welding. Before welding, each opening should be manufactured by machining. Manifolds made of steel pipes should be galvanized inside and outside after welding. The quality of the galvanized layer should comply with the relevant provisions of the current national standard "Galvanized Welded Steel Pipes for Low-Pressure Fluid Transportation" GB3091.
3.3.2 The manifold of the combined distribution system shall be subjected to water pressure strength test and air pressure tightness test in accordance with the provisions of Article 2.2.3 of this Code. 3.3.3 The strength test and air pressure tightness test of the manifold of the non-combined distribution system can be carried out together with the pipeline.
3.3.4 The inner cavity of the manifold should be cleaned and the inlet and outlet should be sealed before installation. 3.3.5 The manifold shall be fixed on the support and frame. The support and frame shall be firmly fixed and anti-corrosion treatment shall be done.
3.3.6 The outer surface of the manifold shall be painted red. 3.3.7 For manifolds equipped with pressure relief devices, the pressure relief direction of the pressure relief device shall not be toward the operating surface.
3.4 Installation of selector valves
3.4.1 The operating handle of the selector valve shall be installed on one side of the operating surface. When the installation height exceeds 1.7m, measures shall be taken to facilitate operation. 3.4.2 For selector valves with threaded connection, it is advisable to use a flexible joint at the connection with the pipeline. 3.4.3 A permanent sign indicating the name or number of the protection zone shall be set on the selector valve, and the sign shall be fixed near the operating handle. 3.5
Installation of valve drive device
3.5.1 The electrical connection line of the electromagnetic drive device shall be fixed along the support, frame or wall of the fixed fire extinguishing agent storage container.
3.5.2 The installation of the manual cable drive device shall comply with the following provisions: Type 6 Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.5.2.1 Except for the exposed part, the cable shall be protected by a steel pipe with internal and external anti-corrosion treatment.
Special guide pulleys shall be used at the turning point of the cable. 3.5.2.3 The handle at the end of the cable shall be placed in a special protection box. 3.5.2.4 The cable sleeve and protection box must be firmly fixed. 3.5.3 When installing a mechanical drive device driven by the gravity of an object, it should be ensured that the heavy object is unobstructed during the falling stroke, and its stroke should exceed the stroke required for the valve to open by 25mm. 3.5.4 The installation of the pneumatic drive device shall comply with the following provisions: 3.5.4.1 The support, frame or box of the driving gas cylinder shall be firmly fixed and anti-corrosion treatment shall be done.
2 The name of the driving medium and the number of the corresponding protection zone name should be marked on the front of the driving gas cylinder.
3.5.5 The pipeline installation of the pneumatic drive device shall meet the following requirements: 3.5.5.1 The pipeline layout shall be horizontal and vertical. The spacing between parallel pipelines or cross pipelines shall be consistent.
The pipeline shall be fixed with a bracket. The spacing between pipeline brackets should not be greater than 0.6m.
Parallel pipelines should be fixed with pipe clamps. The spacing between pipe clamps should not be greater than 0.6m, and an additional pipe clamp should be added at the bend. 3.5.6 After the pipeline of the pneumatic drive device is installed, a gas pressure tightness test shall be carried out. The tightness test shall meet the following requirements:
3.5.6.1 Take reliable measures to prevent the accidental injection of fire extinguishing agent and driving gas. 3.5.6.2 The pressurized medium is nitrogen or air, and the test pressure shall not be lower than the storage pressure of the driving gas.
3.5.6.3 After the pressure reaches the test pressure, turn off the pressurized gas source, and the pressure of the tested pipeline should remain unchanged within 5 minutes.
3.6 Construction of fire extinguishing agent delivery pipeline
3.6.1 When seamless steel pipes are connected by flanges, they should be galvanized inside and outside after welding. Engineering Construction Standard Full Text Information System2 For the selector valve with threaded connection, the connection with the pipeline should adopt a flexible joint. 3.4.3 A permanent sign indicating the name or number of the protection zone should be set on the selector valve, and the sign should be fixed near the operating handle. 3.5
Installation of valve drive device
3.5.1 The electrical connection line of the electromagnetic drive device should be fixed along the support, frame or wall of the fixed fire extinguishing agent storage container.
3.5.2 The installation of the cable-type manual drive device shall comply with the following provisions: Type 6 Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.5.2.1 Except for the exposed part, the cable shall be protected by a steel pipe with internal and external anti-corrosion treatment.
Special guide pulleys shall be used at the turning point of the cable. 3.5.2.3 The handle at the end of the cable shall be set in a special protection box. 3.5.2.4 The cable sleeve and protection box must be firmly fixed. 3.5.3 When installing a mechanical drive device that uses the gravity of an object as the driving force, it should be ensured that the heavy object is unobstructed during the falling stroke, and its stroke should exceed the stroke required for the valve to open by 25mm. 3.5.4 The installation of a pneumatic drive device shall comply with the following provisions: 3.5.4.1 The support, frame or box of the driving gas cylinder shall be firmly fixed and anti-corrosive treatment shall be done.
2 The name of the driving medium and the number of the corresponding protection zone name shall be marked on the front of the driving gas cylinder.
3.5.5 The installation of pipelines of pneumatic drive devices shall comply with the following requirements: 3.5.5.1 The pipeline layout shall be horizontal and vertical. The spacing between parallel pipelines or cross pipelines shall be consistent.
The pipeline shall be fixed with a bracket. The spacing between pipeline brackets should not be greater than 0.6m.
Parallel pipelines should be fixed with pipe clamps. The spacing between pipe clamps should not be greater than 0.6m, and an additional pipe clamp should be installed at the bend. 3.5.6 The pipeline of the pneumatic drive device shall be tested for air pressure tightness after installation. The tightness test shall comply with the following provisions:
3.5.6.1 Take reliable measures to prevent the fire extinguishing agent and driving gas from being accidentally sprayed. 3.5.6.2 The pressurized medium shall be nitrogen or air, and the test pressure shall not be lower than the storage pressure of the driving gas.
3.5.6.3 After the pressure rises to the test pressure, the pressurized gas source shall be turned off, and the pressure of the tested pipeline shall not change within 5 minutes.
3.6 Construction of fire extinguishing agent delivery pipeline
3.6.1 When seamless steel pipes are connected by flanges, they shall be galvanized inside and outside after welding. Engineering Construction Standard Full Text Information System2 For the selector valve with threaded connection, the connection with the pipeline should adopt a flexible joint. 3.4.3 A permanent sign indicating the name or number of the protection zone should be set on the selector valve, and the sign should be fixed near the operating handle. 3.5
Installation of valve drive device
3.5.1 The electrical connection line of the electromagnetic drive device should be fixed along the support, frame or wall of the fixed fire extinguishing agent storage container.
3.5.2 The installation of the cable-type manual drive device shall comply with the following provisions: Type 6 Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.5.2.1 Except for the exposed part, the cable shall be protected by a steel pipe with internal and external anti-corrosion treatment.
Special guide pulleys shall be used at the turning point of the cable. 3.5.2.3 The handle at the end of the cable shall be set in a special protection box. 3.5.2.4 The cable sleeve and protection box must be firmly fixed. 3.5.3 When installing a mechanical drive device that uses the gravity of an object as the driving force, it should be ensured that the heavy object is unobstructed during the falling stroke, and its stroke should exceed the stroke required for the valve to open by 25mm. 3.5.4 The installation of a pneumatic drive device shall comply with the following provisions: 3.5.4.1 The support, frame or box of the driving gas cylinder shall be firmly fixed and anti-corrosive treatment shall be done.
2 The name of the driving medium and the number of the corresponding protection zone name shall be marked on the front of the driving gas cylinder.
3.5.5 The installation of pipelines of pneumatic drive devices shall comply with the following requirements: 3.5.5.1 The pipeline layout shall be horizontal and vertical. The spacing between parallel pipelines or cross pipelines shall be consistent.
The pipeline shall be fixed with a bracket. The spacing between pipeline brackets should not be greater than 0.6m.
Parallel pipelines should be fixed with pipe clamps. The spacing between pipe clamps should not be greater than 0.6m, and an additional pipe clamp should be installed at the bend. 3.5.6 The pipeline of the pneumatic drive device shall be tested for air pressure tightness after installation. The tightness test shall comply with the following provisions:
3.5.6.1 Take reliable measures to prevent the fire extinguishing agent and driving gas from being accidentally sprayed. 3.5.6.2 The pressurized medium shall be nitrogen or air, and the test pressure shall not be lower than the storage pressure of the driving gas.
3.5.6.3 After the pressure rises to the test pressure, the pressurized gas source shall be turned off, and the pressure of the tested pipeline shall not change within 5 minutes.
3.6 Construction of fire extinguishing agent delivery pipeline
3.6.1 When seamless steel pipes are connected by flanges, they shall be galvanized inside and outside after welding. Engineering Construction Standard Full Text Information System
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