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Chapter Law Content

Part 3 Fire Safety Equipments
Chapter 1 Fire Extinguishing Equipments
Section 7 Dry Chemicals Fire Extinguishing Equipments and Simple Automatic Fire Extinguishing
Article 98
Articles 82, 85, 86, 90, 91, 92, 93, 95, and 97 shall govern the spraying pattern, venting device, opening of protected area, selector valve, actuating device, voice alarm device, safety device, emergency power source and indication specifications for dry chemicals fire extinguishing equipments.
Article 99
Quantity of dry chemicals extinguishing medium shall comply with the following provisions:
1.Quantity of fire extinguishing medium required by total flooding shall be calculated following the table below:
┌─────┬─────┬──────┬─────┬─────┐
│Type of │Type I │Type II │Type III │Type IV │
│dry │ (major │ (Major │ (Major │ (Major │
│chemicals │ingredient│ingredient:│ingredient│ingredient│
│ │:sodium │Potassium │: ammonium│: │
│ │bicarbo- │bicarbonate │dihydrogen│potassium │
│ │nate) │) │phosphate │bicarbo- │
│ │ │ │) │nate and │
│ │ │ │ │urea chem-│
│ │ │ │ │icals) │
├─────┼─────┼──────┼─────┼─────┤
│Quantity │ 0.6 │ 0.36 │ 0.36 │ 0.24 │
│required │ │ │ │ │
│by every │ │ │ │ │
│square │ │ │ │ │
│meter of │ │ │ │ │
│protected │ │ │ │ │
│area │ │ │ │ │
│ (kg/m2) │ │ │ │ │
├─────┼─────┼──────┼─────┼─────┤
│Additional│ 4.5 │ 2.7 │ 2.7 │ 1.8 │
│quantity │ │ │ │ │
│for every │ │ │ │ │
│square │ │ │ │ │
│meter of │ │ │ │ │
│opening │ │ │ │ │
└─────┴─────┴──────┴─────┴─────┘
2.Quantity of fire extinguishing medium required by local application shall comply with the following provisions:
(1)Where flammable solid or flammable liquid is stored in containers with upper openings and flame is limited to one side and the flammable substance is unlikely to fly out of the container in case of fire, the required quantity of fire extinguishing medium shall calculated following the table below:
┌─────────┬─────┬───────┬──────┐
│Type of fire │Type I dry│Type II or III│ Type IV dry│
│extinguishing │chemicals │dry chemicals │ chemicals │
│medium │ │ │ │
├─────────┼─────┼───────┼──────┤
│Quantity required │ 8.8 │ 5.2 │ 3.6 │
│by every square │ │ │ │
│meter of protected│ │ │ │
│object (kg/m2) │ │ │ │
├─────────┼─────┼───────┼──────┤
│Multiple for addi-│ 1.1 │ 1.1 │ 1.1 │
│tional quantity │ │ │ │
├─────────┼─────┴───────┴──────┤
│Remark │Where side length of protected object is│
│ │less than 0.6m, 0.6m shall be used as │
│ │side length for area calculation. │
└─────────┴────────────────────┘
(2)As for places other than described in the former subclause, the required quantity of fire extinguishing medium shall be the quantity for unit protected space calculated following the formula below multiplied by the cubage of the protected space (refers to the space 0.6m from any point of the protected object, also named imaginary protected space). However, if used in telecom machine room, the quantity shall be multiplied by 0.7.
Q=X–Yxa/A
Where, Q is the quantity of fire extinguishing medium for unit cubage of the protected space (kg/m3), the multiple for additional quantity shall comply with the former subclause; a is the total area of the actual walls around the protected object (m2), and A is the total area of the imagined walls around the protected space (imaged protected space) (m2).
Values of X and Y shall comply with the table below:
┌─────────┬─────┬───────┬──────┐
│Type of fire exti-│Type I dry│Type II or III│Type IV dry │
│nguishing medium │chemicals │dry chemicals │chemicals │
├─────────┼─────┼───────┼──────┤
│ X │ 5.2 │ 3.2 │ 2.0 │
├─────────┼─────┼───────┼──────┤
│ Y │ 3.9 │ 2.4 │ 1.5 │
└─────────┴─────┴───────┴──────┘
3.Where moveable application is used, the quantity of fire extinguishing medium required by each spraying aimer shall be not less than the corresponding value in the table below:
┌─────────┬─────┬───────┬──────┐
│Type of fire exti-│Type I dry│Type II or III│Type IV dry │
│nguishing medium │chemicals │dry chemicals │chemicals │
├─────────┼─────┼───────┼──────┤
│Quantity of fire │ 8.8 │ 5.2 │ 3.6 │
│extinguishing │ │ │ │
│medium (kg) │ │ │ │
└─────────┴─────┴───────┴──────┘
4.Where total flooding or local application is used and there are two or more protected areas or objects inside a same building, the quantity of the largest area shall be regarded as the required quantity.
Article 100
Nozzles for total flooding and local application shall meet the following requirements:
1.Nozzles equipped for total flooding shall be able to make the sprayed medium quickly and evenly distributed into the whole protected area.
2.Spraying pressure of dry chemicals nozzles shall be more than 1kgf/cm2 or 0.1Mpa.
3.The quantity of fire extinguishing medium calculated pursuant to 99.1 or 99.2 shall be sprayed out in 30 seconds.
4.The effective range of nozzles equipped for local application shall cover all surfaces of the protected objects, and the locations shall ensure the flammable substance will not fly outside due to the spraying of the extinguishing medium.
Article 101
Only Type III dry chemicals may be used as fire extinguishing medium for indoor parking areas.
Article 102
Storage container of fire extinguishing medium shall be equipped pursuant to the following provisions:
1.Filling ratio shall comply with the table below:
┌─────────┬─────┬───────┬──────┐
│Type of fire exti-│Type I dry│Type II or III│Type IV dry │
│nguishing medium │chemicals │dry chemicals │chemicals │
├─────────┼─────┼───────┼──────┤
│Filling ratio (R) │0.85≦R │1.05≦R≦1.75 │1.5≦R≦2.5 │
│ │≦1.45 │ │ │
└─────────┴─────┴───────┴──────┘
2.Storage containers shall be placed pursuant to the following provisions:
(1)Outside the protected area
(2)In places where the temperature is lower than 40℃ and seldom varies.
(3)May not be placed in direct sunshine or rain.
3.Storage container shall be obviously marked with the quantity and type of the filled extinguishing medium, as well as maximum working pressure (pressurized type only), date of production, and manufacturer.
4.Safety device complied with National Standard CNS No.11176 shall be equipped for the container.
5.Container valve complied with National Standard CNS No.10848 and No.10849 shall be equipped for pressure-maintaining container with an internal pressure more than 10kgf/cm2 or 1Mpa.
6.Discharging device shall be equipped for discharging residual gas in storage container, and washing device for dealing with residual extinguishing medium in matching pipe.
7.Effective quakeproof steps shall be applied.
Article 103
Container of pressurizing gas shall be located nearby and reliably connected to storage container, and container valve and safety device complied with CNS No. 11176 shall be equipped.
Article 104
Container of pressurizing or pressure-maintaining gas shall be equipped pursuant to the following provisions:
1.Pressurizing or pressure-maintaining gas shall employ nitrogen or carbon dioxide.
2.Where nitrogen is used as pressurizing gas, the quantity of nitrogen required by every kilogram of dry chemicals shall be 40 liters or more when temperature is 35℃ and air pressure (gauge pressure) is 0kg/cm2 or 0Mpa. Where carbon dioxide is used as pressurizing gas, the quantity of carbon dioxide required by every kilogram of dry chemicals shall be 20 grams or more.
3.Where nitrogen is used as pressure-maintaining gas, the quantity of nitrogen required by every kilogram of dry chemicals shall be more than 10 liters plus the quantity required for washing the piping when temperature is 35℃ and air pressure (gauge pressure) is 0kg/cm2 or 0Mpa. Where carbon dioxide is used, the quantity of carbon dioxide required by every kilogram of dry chemicals shall be not less than 20 grams plus the quantity required for washing the matching pipe.
4.Gas used for washing the pipe shall be stored in different container.
5.Effective quakeproof steps shall be applied.
Article 105
Piping and valves of dry chemicals fire extinguishing equipments shall be equipped pursuant to the following provisions:
1.Piping
(1)It shall be used dedicatedly and its diameter shall be determined according to the amount of spraying amount of nozzles.
(2)Steel pipe, which is complied with National Standard CNS No. 6445 and has been anti-corrosive treated or has the same or higher strength and corrosion endurance, shall be employed, but seamless steel pipe complied with National Standard CNS No. 4626, wherein the thickness or strength is the same as or higher than that of pipe number SCH40 and anticorrosive treatment like zincing etc has been made, shall be used for pressure-maintaining type when the pressure is more than 25kg/cm2 or 0.25Mpa and less than 42kg/cm2 or 4.2Mpa.
(3)Where copper pipe is used, the copper pipe shall comply with National Standard CNS No. 5127 or have the same or higher strength, and be able to endure a pressure at least 1.5 times the adjustment pressure or the highest pressure.
(4)Drop height between highest matching pipe and lowest matching pipe shall be less than 50m.
(5)Matching pipes shall be distributed evenly so as to ensure the same spraying pressure of each nozzle when spraying at the same time.
(6)Effective quakeproof steps shall be applied.
2.Valves
(1)Valve shall comply with National Standards CNS or have the same or higher strength and corrosion endurance, and anti-corrosion treatment shall have been made.
(2)Location and direction of switch shall be marked.
(3)Manual operating part of relief valve and container valve of pressurizing gas shall be located in safe and accessible places.
Article 106
The distance between any part of the matching pipe of dry powder fire extinguishing equipments from storage container and the bending part shall be 20 times the pipe diameter or more, unless effective measures have been taken to make the dry chemicals never separated from pressurizing or pressure-maintaining gas.
Article 107
Pressure regulating device, which can adjust the pressure to under 25kgf/cm2 or 2.5Mpa, shall be equipped for dry chemicals fire extinguishing equipments.
Article 108
Pressure setting device for pressurized dry powder fire extinguishing equipments shall be equipped pursuant to the following provisions:
1.Relief valve shall be opened when the pressure of storage container meets the set value after actuating device is actuated.
2.Each storage container shall be equipped with pressure setting device.
Article 109
Pressure-maintaining dry chemicals fire extinguishing equipments shall be equipped with pressure gauge indicating the range of working pressure in green.
Article 110
Where gas-actuated type is used, the following provisions shall be observed:
1.Container of actuating gas shall be able to endure a pressure of 250kgf/cm2 or 25Mpa.
2.Container of actuating gas shall have a cubage more than 0.27 liter; the weight of contained gas over 145g, and the filling ratio not less than 1.5.
3.Safety device and container valve for container of actuating gas shall comply with National Standard CNS No.11176.
4.Container of actuating gas cannot be used for auto stopping in the protected area at the same time.
Article 111
Moveable application shall comply with the following provisions in addition to Articles 102.1, 102.2 (2) and (3), 102.3 and 102.4.
1.Valve of storage container may be switched manually at the opening of leather pipe.
2.Storage containers shall be equipped separately at the locations where leather pipes are installed.
3.Red indicating lamp shall be equipped and “Moveable Dry Chemicals Fire Extinguishing Equipments” shall be marked nearby each storage container.
4.The equipments shall be placed where it is inaccessible for fume in case of fire.
5.The quantity of fire extinguishing medium sprayed by each aimer shall comply with the table below:
┌─────────┬─────┬───────┬──────┐
│Type of fire exti-│Type I dry│Type II or III│Type IV dry │
│nguishing medium │chemicals │dry chemicals │chemicals │
├─────────┼─────┼───────┼──────┤
│Quantity sprayed │ 45 │ 27 │ 18 │
│every minute │ │ │ │
│(kg/min) │ │ │ │
└─────────┴─────┴───────┴──────┘
6.Leather pipe, nozzle and pipe carrier of moveable carbon dioxide fire extinguishing equipments shall comply with National Standard No.11177.
Article 111-1
Simple automatic fire extinguishing equipments shall be installed based on following regulations.
1.Smoke-discharging pipe should equip with sensor and sprinkler depending on the sectional area, alarming length and wind speed. The equipped number, location and emitting amount should be effectively enough to extinguish fire.
2.When wind speed inside smoke-discharging pipe exceed 5 meter per second, a chemical agent releasing mechanism and linked shutting valves should be installed outside alarming length. Such installation is not required if fire can be effectively extinguished without said valves.
3.Effective range of sprinkler should cover fume hood and smoke-discharging pipe, and the installed location should preclude the possibility for the inflammables to release upon emission of chemical agent.
4.Sprinklers within the range of protection should synchronously emit.
5.Storage cylinders and pressurized gas cylinders should be stored at the ambient temperature below 40C.
Alarming length prescribed in Item (2) of above 5 meters within connecting point between fume hood and smoke-discharging pipe.