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The role of the fire fighting water storage tanks
Fire fighting water storage tanks water storage, on the one hand, make the fire water pipe full of water, save time full of pipes after
fire pump open, won the time to put out fire, another aspect,set up the roof pressurization, zener fire water system and water tank can
guarantee to enrich the water gun, have a decisive role to the success of the early to put out the fire.
Setting conditions of fire Setting conditions of fire fighting water storage tanks
- If the building with normal high pressure water supply system can guarantee the water quantity and hydraulic pressure time of
the most disadvantageous point hydrant elimination and automatic sprinkler equipment, there is no fire fighting water tanks. - Buildings with temporary high pressure water supply systems shall be equipped with fire fighting water tanks or air
pressure tanks and water towers; - When high pressure water supply system is adopted, high fire fighting water storage tanks is not required. When temporary high
pressure water supply system is adopted, high fire fighting water storage tanks should be installed. - Additional, the atmospheric pressure water supply system of area concentration, if can assure indoor most disadvantageous point fire
hydrant and automatic water spray to set the water quantity when present child water pressure, can not set fire fighting water storage
tanks, but when using the temporary high pressure water supply system of area concentration, roof still should set the fire fighting water
storage tanks that supplies extinguish initial fire.
Setting position and height of fire fighting water storage tanks
- Gravity gravity water tank should be installed at the highest part of the building;
- High setting height of the fire fighting water tanks fire hydrant hydrostatic pressure shall ensure that the most
unfavorable point, when the building height less than 100 m high building fire hydrant hydrostatic pressure the most
unfavorable point should not be less than, when building height more than 100 m, high-rise building fire hydrant hydrostatic
pressure the most unfavorable point should not be less than, when high water tank can not meet the requirements of the
static pressure, should set charging facilities.
Fire fighting water storage tank volume calculation
- Indoor tanks (including zoning water tank) should store 10min of fire water consumption, when indoor fire water consumption
is not more than 25L/s, after calculation of water tank fire water storage is more than 12M³,still can use 12M³; When the indoor
fire water consumption exceeds 25L/s and the water storage capacity of the water tank exceeds 18M³, 18M³ is still used. - The fire water storage capacity of the high fire fighting water tanks should not be less than 18M³ for class I public
buildings, and not less than 12M³ for class II public buildings and class I public buildings. Class II residential buildings should
not be less than 6.00M³. - The capacity of zonal fire fighting water storage tanks in parallel water supply mode is the same as that in high water tank. In
addition, the volume of the fire fighting water storage tanks used for hydration with other water should meet other water storage
in addition to its own fire water storage.
Other requirements for fire fighting water storage tanks
- Technical measures shall be taken not to use fire water for other purposes in water tanks combined with fire water.
- After a fire, the fire water collected by the fire pump should not enter the fire fighting water storage tanks. Check valves should
be set on the outlet pipes of the fire fighting water tanks. - Fire fighting water tanks should be filled with water from domestic and production water supply pipes.
- Fire fighting water storage tank sin high-rise buildings should be used two, in a tank maintenance, still can save the necessary
emergency water, and should be at the bottom of the tank with a connection pipe connection, the valve is set on the connection
pipe, the valve is in normally open state. - Fire fighting water storage tanks should be used with other water tank, is the water in the water tank is often in the flow update
state, to waterproof quality deteriorates, other water can be used to siphon top drilling and other measures to supply. - Fire fighting water tank saccessory configuration and fire fighting water storage tanks installation, layout can refer to the
general water tank.
Fire fighting water storage tanks material selection
- At present the material of the most cistern has a lot of kinds, the commonnest material has the material such as steel plate,
stainless steel, reinforced concrete, glass steel, enamel steel plate, but they have advantage and disadvantage each.Carbon steel
plate welded steel plate water tank, the inner surface of the need for anti-corrosion treatment, and anti-corrosion materials shall
not hinder the health requirements. - Reinforced concrete site perfusion water tank, large weight, long construction period, and pipe edge joints easy to leak, cleaning
surface materials easy to fall off. - Water quality of enamel steel tank is not polluted, can prevent steel rust, convenient and rapid installation, not limited by civil
construction progress, reasonable structure, strong and beautiful, no deformation, no water leakage, wide applicability. - FRP water tank is not restricted by building space, strong adaptability, light weight, no rust, no leakage, beautiful appearance,
short service life, good insulation performance, safe and reliable, convenient installation, simple cleaning and maintenance. - Stainless steel water tank is strong, does not pollute water, corrosion resistance, watertight, easy to clean, light weight, no algae,
easy to heat preservation, beautiful, convenient construction, but the price is high.
Inquiry please contact.
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