GB 50163-1992 Design specification for halon 1301 fire extinguishing system
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National Standard of the People's Republic of China
50163—92
Code of design on halon 1301 fire extinguishing systems
1992—09—29
1994-05—01
State Bureau of Technical Supervision
Ministry of Construction of the People's Republic of China
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Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code of design on halon 1301 fire extinguishing systems
GB50163—92
Editor Department: Ministry of Public Security of the People's Republic of China Approval department: Ministry of Construction of the People's Republic of China Effective date: May 1, 1993
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Engineering Construction Standards Full Text Information System
Notice on the release of the national standard "Halon 1301 Fire Extinguishing System Design Specification"
Construction Standards [1992] No. 665
According to the requirements of the former State Planning Commission's Document No. [1986] 2630, the "Halon 1301 Fire Extinguishing System Design Specification" jointly compiled by the Ministry of Public Security and relevant departments has been reviewed by relevant departments. The "Halon 1301 Fire Extinguishing System Design Specification" GB5016392 is now approved as a mandatory national standard and will be implemented from May 1, 1993. The Ministry of Public Security is responsible for the management of this specification. The Ministry of Public Security's Tianjin Fire Science Research Institute is responsible for its specific interpretation and other work. The Ministry of Construction's Standards and Quotas Research Institute is responsible for organizing its publication and distribution.
Ministry of Construction of the People's Republic of China
September 29, 1992
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Engineering Construction Standards Full Text Information System
Preparation Instructions
This specification is jointly prepared by the Tianjin Fire Science Research Institute of the Ministry of Public Security, the Tenth Design Institute of the Ministry of Machinery and Electronics Industry, the Beijing Architectural Design Institute, the Armed Police Academy, and the Shanghai Chongming County Construction Bureau in accordance with the original State Planning Commission's document notification [1986] No. 2630.
The compilation team followed the relevant policies and guidelines of national capital construction and the fire protection work principle of "prevention first, prevention and control combined", conducted a comprehensive investigation and research on the research, design, production and use of my country's halogenated hydrocarbon 1301 fire extinguishing system, carried out some test verification work, and on the basis of summarizing existing scientific research results and engineering practice, referred to international standards and foreign standards such as the United States, France, Britain, and Japan, and widely solicited opinions from relevant units. After repeated discussions and revisions, this specification was compiled and finally finalized by the relevant departments.
This specification has seven chapters and six appendices. It includes general provisions, protection zones, calculation of halogenated hydrocarbon 1301 dosage, pipe network design calculation, system components, operation and control, safety requirements, etc.
In the process of implementing this specification, all units should pay attention to summarizing experience and accumulating information. If you find any need for modification and supplementation, please send your opinions and relevant information to the Tianjin Fire Science Research Institute of the Ministry of Public Security (address: No. 92, Jinzi Road, Nankai District, Tianjin, Postal Code 300381) for reference in future modifications. Ministry of Public Security of the People's Republic of China
March 1992
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1 General
Chapter 2 Protection Zone
Chapter 3 Calculation of Halon 1301 Usage
Section 1 Design Usage and Reserve Usage of Halon 1301Section 2 Design Fire Extinguishing Usage and Design Situation UsageSection 3 Residual Usage…
Chapter 4 Management Network Design Calculation
Section 1 General Provisions
Section 2 Pipe Network Fluid Calculation
Chapter 5 System Components
.......
Section 1 Storage Device
Section 2 Selector Valves and Nozzles
Section 3 Pipelines and Accessories
Chapter 6
Operation and Control
Chapter 7
Appendix 1
Appendix 2
Appendix 3| |tt||Appendix 4
Appendix 5
Safety requirements
Glossary
Specific volume of halogenated hydrocarbon 1301 vapor and specific volume of mixed gas containing halogenated hydrocarbon 1301 in the protection area
Pressure coefficient Y and density coefficient Z
Pressure loss and pressure loss correction factor
Example of calculation of pressure loss in pipeline network
Appendix 6
Explanation of terms used in this specification·
Additional Explanation
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Chapter 1 General
Article 1.0.1 This specification is formulated in order to reasonably design the Halon 1301 fire extinguishing system, reduce fire hazards, and protect the safety of people and property. Article 1.0.2 The design of the Halon 1301 fire extinguishing system shall comply with the relevant policies and guidelines of the national capital construction, and be safe, reliable, technologically advanced, and economically reasonable in light of the characteristics of the protected objects.
Article 1.0.3 This specification applies to the Halon 1301 full flooding fire extinguishing system installed in industrial and civil buildings.
Article 1.0.4 Halon 1301 fire extinguishing system can be used to extinguish the following fires: 1. Fires of flammable gases such as coal gas, methane, and ethylene; 3. Fires of Class A, B, and C liquids such as methanol, ethanol, acetone, benzene, kerosene, gasoline, and diesel;
3. Fires of solids such as wood and paper;
4. Fires of live equipment and electrical lines such as transformers and distribution equipment, generator sets, and cables.
Article 1.0.5 Halon 1301 fire extinguishing system shall not be used to extinguish fires containing the following substances:
1. Chemical substances and strong oxidants that can be rapidly oxidized without air, such as nitrocellulose, explosives, nitrogen oxides, and fluorine;
2. Active metals and their hydrides such as potassium, sodium, magnesium, titanium, zirconium, uranium, cyclopentane, potassium hydride, and sodium hydride;
3. Certain peroxides, hydrazine, and other chemical substances that can decompose on their own; 4. Phosphorus and other substances that are prone to spontaneous combustion.
Article 1.0.6 Wherever the national building design fire protection code stipulates that a halogenated hydrocarbon or carbon dioxide fire extinguishing system should be installed, a halogenated hydrocarbon 1301 fire extinguishing system should be installed when people are working regularly.
In the design of the halogenated hydrocarbon 1301 fire extinguishing system, materials and equipment that meet the requirements of national standards should be selected.
Article 1.0.7
In addition to implementing the provisions of this code, the design of the halogenated hydrocarbon 1301 fire extinguishing system shall also comply with the requirements of the current national standards and specifications. Engineering Construction Standard Full Text Information System
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Chapter 2 Protection Zone
Article 2.0.1 The division of protection zones shall comply with the following provisions: 1. Protection zones shall be divided into fixed enclosed spaces; 2. When a pipe network fire extinguishing system is used, the area of a protection zone should not be greater than 500m2 and the volume should not be greater than 2000m;
3. When a prefabricated fire extinguishing device is used, the area of two protection zones should not be greater than 100m2 and the volume should not be greater than 300m.
Article 2.0.2 The fire resistance limit of the partition wall and door of the protection zone shall not be less than 0.50h; the fire resistance limit of the ceiling shall not be less than 0.25h. Article 2.0.3 The allowable pressure of the enclosure components of the protection zone shall not be less than 1.2kPa (the pressure difference of the gas inside and outside the protection zone). Article 2.0.4 Scattered holes should not be set on the enclosure components of the protection zone. When scattered holes must be set up, manual and automatic closing devices should be installed. Article 2.0.5 A completely enclosed protection area should have a pressure relief vent. The pressure relief vent should be located on the exterior wall, and the height of its bottom from the indoor floor should not be less than 2/3 of the indoor net height. For protection areas equipped with explosion-proof pressure relief facilities or where there are no sealing strips on the gaps between doors and windows, a pressure relief vent may not be installed.
Article 2.0.6 The area of the pressure relief vent shall be calculated according to the following formula: 0.0262·μ·QM
/μm·PB
Where S is the area of the pressure relief vent (m2);
u1 is the specific volume of the halogenated hydrocarbon 1301 vapor, which is taken as 0.15915m/kg, and m is at 101.At 3kPa and 20℃, the specific volume (m/kg) of the mixed gas containing halogenated hydrocarbon 1301 in the protection zone shall be calculated according to the provisions of Appendix 2 of this specification;
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Engineering Construction Standard Full-text Information System
-The sum of the average design flow rates of all nozzles in a protection zone (by weight, the same below, kg/s);
P——The allowable pressure of the enclosure components of the protection zone (kPa), take the minimum value.
Article 2.0.7 A combined distribution system should be adopted for two or more adjacent protection zones.
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Chapter 3 Calculation of Halon 1301 Usage
Section 1 Design Usage and Reserve Usage of Halon 1301Article 3.1.1 The design usage of Halon 1301 shall include the design fire extinguishing usage or the design situation usage and the remaining amount.
Article 3.1.2 The design usage of Halon 1301 in the combined distribution system shall be calculated according to the design usage of the protection zone with the largest amount of Halon 1301 in the combination. Article 3.1.3 The Halon 1301 fire extinguishing system used in the protection zone of the key protection object and a combined distribution system with more than eight protection zones shall be equipped with usage. The reserve amount shall not be less than the design usage.
Note: The key protection objects refer to the microwave rooms of central and provincial TV transmission towers, communication rooms in cities with a population of more than 1 million, large electronic computer rooms or valuable equipment rooms, the collection rooms of provincial or libraries with a collection of more than 2 million books, and important cultural relics, materials, and archives at the central and provincial levels. Section 2 Designed fire extinguishing dosage and designed situational dosage Article 3.2.1 The designed fire extinguishing dosage or designed situational dosage shall be calculated according to the following formula: V
(100-)μmln
Where M. — Designed fire extinguishing dosage or designed situational dosage (kg); 9—Designed fire extinguishing concentration or designed situational concentration of halogenated hydrocarbon 1301 (%); V—Net volume of the protection area (m);
umln——Specific volume of halogenated hydrocarbon 1301 vapor at the lowest ambient temperature of the protection area (m/kg), which shall be calculated according to the provisions of Appendix 2 of this specification. Article 3.2.2 For protection areas where flammable gases and Class A, B and C liquids are produced, used or stored, the design fire extinguishing concentration and design inerting concentration of halogenated hydrocarbon 1301 shall comply with the following provisions:
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Engineering Construction Standard Full-text Information System
For protection areas with explosion hazards, the design inerting concentration shall be adopted, and for protection areas without explosion hazards, the design fire extinguishing concentration may be adopted. 2. The design fire extinguishing concentration or the design inerting concentration shall not be less than 1.2 times the minimum fire extinguishing concentration or inerting concentration, and shall not be less than 5.0%. 3. When several combustibles coexist or are mixed, the design fire extinguishing concentration or the design inerting concentration of halogenated hydrocarbon 1301 shall be determined according to the maximum one. 4. The design fire extinguishing concentration and the design inerting concentration of halogenated hydrocarbon 1301 in protection areas for flammable gases and Class A, B and C liquids may be determined according to Table 3.2.2. The design extinguishing concentration and design situational concentration of halogenated hydrocarbon 1301 in the protection area of flammable gas and Class A, B and C liquids not given in the table
Material name
N-hexanone
N-heptane
Nitromethane
Isopropyl alcohol
Mixed xylene
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Design extinguishing concentration (%)
Design situational concentration (%)
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Should be determined through experiments.
Article 3.2.3
: The design extinguishing concentration of halogenated hydrocarbon 1301 in the protection area of books, archives and cultural relics database should be 7.5%. Article 3.2.4 The design extinguishing concentration of halogenated hydrocarbon 1301 in the protection area of transformer substation, communication room, computer room, etc. should be 5.0%. Article 3.2.5 The immersion time of Halon 1301 shall comply with the following provisions: 1. In case of solid fire, it shall not be less than 10 minutes; 2. In case of combustible gas fire and Class A, B and C liquid fire, it must be greater than 1 minute.
Section 3 Residual Quantity
Article 3.3.1 The residual quantity of Halon 1301 shall include the residual quantity in the storage container and the residual quantity in the pipe network.
Article 3.3.2 The residual quantity in the storage container can be calculated according to the volume of the container below the opening of the liquid guide pipe.
The residual quantity of Halon 1301 in the balanced pipe network and the non-balanced pipe network arranged in the protection area containing only one enclosed space can be ignored. The remaining amount of halogenated hydrocarbon 1301 in the non-balanced pipe network arranged in the protection area containing two or more closed spaces can be calculated as follows:
The remaining amount of halogenated hydrocarbon 1301 in the pipe network (kg); where M
Vi is the volume of the i-th pipe section downstream of the boundary between the gas phase and the gas-liquid two-phase in the pipe network at the end of the injection of halogenated hydrocarbon 1301 (m3); A is the average density of halogenated hydrocarbon 1301 in the i-th pipe section downstream of the boundary between the gas phase and the gas-liquid two-phase in the pipe network at the end of the injection of halogenated hydrocarbon 1301 (kg/m*. The average density of halogenated hydrocarbon 1301 can be determined according to Article 4.2.13 of this Code. The pressure in the pipeline can be 50% of the medium-term container pressure and shall not be higher than the saturated vapor pressure of halogenated hydrocarbon 1301 at 20°C. Engineering Construction Standard Full-text Information SystemArticle 2.4 For protection areas such as transformer rooms, communication rooms, and computer rooms, the design extinguishing concentration of Halon 1301 should be 5.0%. Article 3.2.5 The immersion time of Halon 1301 shall comply with the following provisions: 1. In case of solid fire, it shall not be less than 10 minutes; 2. In case of flammable gas fire and Class A, B, and C liquid fire, it must be greater than 1 minute.
Section 3 Residual Quantity
Article 3.3.1 The residual quantity of Halon 1301 shall include the residual quantity in the storage container and the residual quantity in the pipe network.
Article 3.3.2 The residual quantity in the storage container can be calculated according to the volume of the container below the opening of the liquid guide pipe.
The residual quantity of Halon 1301 in the balanced pipe network and the non-balanced pipe network arranged in the protection area containing only one enclosed space can be ignored. The remaining amount of halogenated hydrocarbon 1301 in the non-balanced pipe network arranged in the protection area containing two or more closed spaces can be calculated as follows:
The remaining amount of halogenated hydrocarbon 1301 in the pipe network (kg); where M
Vi is the volume of the i-th pipe section downstream of the boundary between the gas phase and the gas-liquid two-phase in the pipe network at the end of the injection of halogenated hydrocarbon 1301 (m3); A is the average density of halogenated hydrocarbon 1301 in the i-th pipe section downstream of the boundary between the gas phase and the gas-liquid two-phase in the pipe network at the end of the injection of halogenated hydrocarbon 1301 (kg/m*. The average density of halogenated hydrocarbon 1301 can be determined according to Article 4.2.13 of this Code. The pressure in the pipeline can be 50% of the medium-term container pressure and shall not be higher than the saturated vapor pressure of halogenated hydrocarbon 1301 at 20°C. Engineering Construction Standard Full-text Information SystemArticle 2.4 For protection areas such as transformer rooms, communication rooms, and computer rooms, the design extinguishing concentration of Halon 1301 should be 5.0%. Article 3.2.5 The immersion time of Halon 1301 shall comply with the following provisions: 1. In case of solid fire, it shall not be less than 10 minutes; 2. In case of flammable gas fire and Class A, B, and C liquid fire, it must be greater than 1 minute.
Section 3 Residual Quantity
Article 3.3.1 The residual quantity of Halon 1301 shall include the residual quantity in the storage container and the residual quantity in the pipe network.
Article 3.3.2 The residual quantity in the storage container can be calculated according to the volume of the container below the opening of the liquid guide pipe.
The residual quantity of Halon 1301 in the balanced pipe network and the non-balanced pipe network arranged in the protection area containing only one enclosed space can be ignored. The remaining amount of halogenated hydrocarbon 1301 in the non-balanced pipe network arranged in the protection area containing two or more closed spaces can be calculated as follows:
The remaining amount of halogenated hydrocarbon 1301 in the pipe network (kg); where M
Vi is the volume of the i-th pipe section downstream of the boundary between the gas phase and the gas-liquid two-phase in the pipe network at the end of the injection of halogenated hydrocarbon 1301 (m3); A is the average density of halogenated hydrocarbon 1301 in the i-th pipe section downstream of the boundary between the gas phase and the gas-liquid two-phase in the pipe network at the end of the injection of halogenated hydrocarbon 1301 (kg/m*. The average density of halogenated hydrocarbon 1301 can be determined according to Article 4.2.13 of this Code. The pressure in the pipeline can be 50% of the medium-term container pressure and shall not be higher than the saturated vapor pressure of halogenated hydrocarbon 1301 at 20°C. Engineering Construction Standard Full-text Information System
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