4.1.4 see Appendix E of the specification for examples of incompatible fire extinguishing agents.
Class 2B fire: liquid fire or fusible solid material fire.
Serious risk level: places with high fire risk, many combustibles, rapid spread after fire, difficult to put out and easy to cause major property losses; Hazard level 2: places with high fire risk, more combustibles, rapid spread after fire and difficult to put out fire; 3 Light hazard level: places with low fire risk, less combustibles, slow spread after fire and easy to put out fire.
5.2.2 the maximum protection distance of fire extinguishers set in class B and C fire places shall comply with the provisions of table 5.2.2.
4.1.3 when two or more types of fire extinguishers are selected in the same fire extinguisher configuration site, fire extinguishers with compatible extinguishing agents shall be used.
5.1.2 luminous signs indicating the location of fire extinguishers with visual obstacles shall be set.
2.1.3 protection distance traveldistance the straight-line travel distance from the fire extinguisher setting point to the most unfavorable point in the fire extinguisher configuration site.
See Appendix F of this specification for examples of non essential places.
3.1.2 the fire types in the places where fire extinguishers are equipped can be divided into the following five categories: Class 1A fire: solid matter fire.
When there are different fire types in the same fire extinguisher configuration place, the general-purpose fire extinguisher shall be selected.
Fire extinguishers in type 4.2.1A should choose water type extinguishers, ammonium phosphate dry powder extinguishers, foam extinguishers or halogenated fire extinguishers.
3.1 fire type 3.1.1 fire type of fire extinguisher configuration place shall be classified according to the substances and combustion characteristics in the place.
The fire extinguisher box shall not be locked.
This specification is not applicable to the workshop or warehouse where explosives, ammunition, initiating explosive devices and fireworks are produced or stored.
3.2 hazard level 3.2.1 the hazard level of the place where the fire extinguisher is equipped in industrial buildings shall be divided into the following three levels according to the fire risk of the articles produced, used and stored, the quantity of combustibles, the fire spreading speed, the difficulty of fire fighting and other factors: 1.
4.2 types of fire extinguishers should be chosen.
For class B fire places with polar solvents, solvent-resistant fire extinguishers for class B fire shall be selected.
5.2.4 the maximum protection distance of fire extinguishers in class E fire places shall not be less than the provisions of class A or class B fire in the place..
2.1.2 calculation unit calculation area of fire extinguisher configuration.
Fire extinguishing efficiency and universality of fire extinguishers; 4.
184.108.40.206 symbols for design and calculation of extinguisher configuration: Q – minimum required fire extinguishing level of calculation unit (a or b); S – protection area of calculation unit (M2); U – maximum protection area of unit fire extinguishing level in class A or B fire places (m2 / A or m2 / b); K – correction coefficient; QE – Minimum fire extinguishing level (a or b) of each fire extinguisher set point in the calculation unit; N – number of fire extinguishers set in the calculation unit (PCs.) 2.2.2 for the design legend of fire extinguisher configuration, see Appendix B3 fire type and risk level of fire extinguisher configuration place in this specification.
2.1.4 fire extinguishing level Indicates the effectiveness of fire extinguishers in extinguishing different types of fires.
When the fire extinguisher is set outdoors, corresponding protective measures shall be taken.
Hazard level of the place where the fire extinguisher is equipped; 3.
2 terms and symbols 2.1 terms 2.1.1 distribution place of fire extinguisher.
5.1.3 the fire extinguisher shall be placed stably, and its nameplate shall face outward.
The portable fire extinguisher should be set in the fire extinguisher box or on the hook and bracket, and the height from the top to the ground should not be greater than 1.50M; The height from the bottom to the ground shall not be less than 0.08m.
5.2 maximum protection distance of fire extinguishers 5.2.1 the maximum protection distance of fire extinguishers set in class a fire places shall comply with the provisions of table 5.2.1.
5 setting of fire extinguisher 5.1 general provisions 5.1.1 the fire extinguisher shall be set in a place with obvious location and easy access, and shall not affect the safe evacuation.
Fire type of fire extinguisher configuration site; 2.
It is composed of numbers indicating fire extinguishing efficiency and letters indicating fire extinguishing type.
Halon fire extinguishers can be provided in necessary places.
Ambient temperature of fire extinguisher setting point; 6 physical fitness of personnel using fire extinguishers.
5.2.for fire extinguishers in class 3D fire places, the maximum protection distance shall be determined according to specific conditions.
5.1.5 fire extinguishers shall not be set in places beyond their service temperature range.
Serious hazard level: places with important use nature, dense personnel, many electricity and fire, many combustibles, rapid spread after fire, difficult to put out and easy to cause major property losses or mass casualties; Hazard level 2: places with important use nature, dense personnel, more electricity and fire, more combustibles, rapid spread after fire and difficult to put out fire; 3.
See Appendix C of this code for an example of the hazard level of the places where fire extinguishers are equipped in industrial buildings.
4.2.2B type fire sites should choose foam extinguishers, sodium bicarbonate dry powder extinguishers, ammonium phosphate dry powder extinguishers, carbon dioxide fire extinguishers, fire extinguishers for B type fire extinguishers or halogenated fire extinguishers.
1 General 1.0.1 This code is formulated for the purpose of reasonably configuring building fire extinguishers (hereinafter referred to as fire extinguishers), effectively extinguishing the initial fire of industrial and civil buildings, reducing fire losses and protecting the safety of personnel and property.
4.2.6 halon fire extinguishers shall not be equipped in unnecessary places.
4.2.5ammonium phosphate dry powder fire extinguisher, sodium bicarbonate dry powder fire extinguisher, halogenated alkane fire extinguisher or carbon dioxide fire extinguisher shall be selected for class E fire places, but carbon dioxide fire extinguisher equipped with metal horn barrel shall not be selected.
4.2.4 special fire extinguishers for extinguishing metal fires shall be selected for class D fire places.
When setting is necessary, corresponding protective measures shall be taken.
1.0.4 in addition to this specification, the configuration of fire extinguishers shall also comply with the provisions of relevant current national standards and specifications.
1.0.3 the configuration type, specification, quantity and setting position of fire extinguishers shall be taken as the content of building fire engineering design, and shall be indicated on the engineering design drawing.
1.0.2 This specification is applicable to new construction, reconstruction and expansion of industrial and civil construction projects that produce, use or store combustibles.
See Appendix A of this specification for the configuration type, specification and basic parameters of fire extinguisher in buildings.
4.1.2 fire extinguishers with the same type and operation method should be selected in the same fire extinguisher configuration place.
Contamination degree of fire extinguishing agent on protective articles; 5.
Class 3C fire: gas fire.
4.2.3c class fire places shall select ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, carbon dioxide fire extinguishers or halogenated alkane fire extinguishers.
5.1.4 fire extinguishers should not be set in wet or highly corrosive places.
3.2.2 the hazard level of the place equipped with fire extinguishers in civil buildings shall be divided into the following three levels according to the nature of use, personnel density, electricity and fire, quantity of combustibles, fire spreading speed, difficulty of fire fighting and other factors: 1.
Light hazard level: places where the nature of use is general, the personnel are not dense, the electricity and fire are less, the combustibles are less, the fire spreads slowly and it is easy to put out the fire.
Class 4D fire: metal fire.
Class 5E fire (live fire): fire in which objects burn with electricity.
See Appendix D4 selection of fire extinguishers 4.1 General Provisions 4.1.1 the following factors shall be considered in the selection of fire extinguishers in civil buildings: 1.