【 Weak current college 】 building fire system---after-school exercise---Power By 【 China power house network 】

First, multiple choice questions (alternate answer each question, only one adresses. ）
1. multilayer construction is the construction height is less than or equal to () other m civil engineering and industrial construction.
A．15
B．20
C．24
D．30
　　　
2. the high-rise building is a building's height is equal to or greater than () m.
A．50
B．80
C．100
D．120
　　 　
3. the building's basement, semi basement floor roof surface does not exceed the higher () mm, not included in the layer.
A．1.0
B．1.2
C．1.3
D．1.5
　　 　
4. wet or dry system is the dry and wet the merits of the two systems combined with an automatic sprinkler system, environment temperature is higher than () ° c, less than () when the system is dry.
A．50、4
B．60、4
C．70、4
D．80、4
　　 　
5. wet or dry ambient temperature in the system () ¡æ into wet system.
A．4～50
B．4～60
C．4～70
D．4～80
　　 　
6. water spray pipe fire suppression system is equipped with specially designed open nozzle (spray nozzle), can emit a certain speed, density, average particle size in () of spray water.
A．50～700
B．60～700
C．70～700
D．100～700
2. fill in the blanks questions (please toyoko line on enter your answer. 1. fire process) can be divided into three stages,,.
2. fire burning by burning objects into, combustion, the combustion and combustion.
3. fire by severity into fire, fire, and fire.
4. automatic fire alarm system is mainly composed of, and etc.
5. automatic sprinkler system by the nozzle opening and closing forms are divided into automatic sprinkler systems and automatic sprinkler system.
6. alarm control unit is in the automatic sprinkler system in monitoring, control, and alarm function, and can emit sound, light, signal devices, primarily, and etc.
7. water curtain system is composed of, and composed of sprinkler systems, whose role is to block, room fire.
8. carbon dioxide fire extinguishing system press fire modes can be divided into: ① ② System; System; ③ System; ④ System.
9. dry powder (BC), (ABC) and (D class fire special powder).
10. foam extinguishing effect of three is the role, function and role.
11. the foam fire extinguishing system is used by its type, and type. Third, the noun parser (in the the nouns in the text box below, enter your answer. ) 1. combustion
2. alarm control valve
3. dry powder extinguishing agent
4. the foam fire extinguishing agent
5. halon fire extinguishing agent
　　　 　
IV. question
1. What are the characteristics of building fire? 【 answer points 】--------------------------------------------------------------------------------① more hazardous fire hazard;
② the fire spread very fast and fierce;
③ fire suppression difficult;
④ building evacuation of persons and goods;
⑤ serious consequences. --------------------------------------------------------------------------------

2. set the indoor hydrant system requirements? 【 answer points 】--------------------------------------------------------------------------------
Under our existing architectural design fire protection standard, the senior civil building design fire protection standard "and" people's air defense engineering design fire protection standard law, should be set indoor hydrant water supply system of the building as described below.
① Workshop, Depot (but on the fire resistance class 1, class 2 and fuel less Ding, "workshop and warehouse, fireproof grade 3, grade 4 and building volume not exceeding 3000m3 of group d plant and building volume not exceeding 5000m3 's" factory) and research building (kept contact with water can cause burning explosives and inappropriate settings except for water supply and rooms).
② seats more than 800 theatres, cinemas, clubs and more than 200 seat auditorium, Stadium.
③ building volume exceeding 5000m3 station, port and airport buildings and galleries, shops, ward building, clinic building, teaching building and library, etc.
④ more than 7 levels of modular homes and more than 6 storey residential tower house, and the underlying has tonglangshi commercial network of modular homes.
⑤ exceeding 5 layers or volume exceeding 10000 m3 of otherCivil construction.
⑥ national heritage conservation units focus-timber or wood structure of ancient architecture.
⑦ all kinds of tall buildings.
⑧ area exceeding 300m2 for shopping malls, hospitals, halls, stadiums, rink, dance halls, electronic entertainment Hall of Defense project; the use of the site exceeds 450m2, used as a restaurant, r and d workshop, r and d goods warehouse of Defense project and used as a Hall, a cinema and fire the elevator room of Defense project. --------------------------------------------------------------------------------

3. fire hydrant system layout what? 【 answer points 】--------------------------------------------------------------------------------① guarantee two pistol-location of the full water column (that is, the Jet in dense water gun, with sufficient strength to fight fires in the water column) to reach the Interior of any parts. Only construction height is not higher than the volume not greater than 24m and 5000m3 coffers, may adopt a pistol of enriching the water reaches the indoor any part. Nozzles full water column length should be determined by the calculation, generally should not be less than 7m, but more than six layers of civil architecture, more than four layers of the plant and warehouse, should not be less than 10m.
② Merge system, fire hydrant risers should be set up independently, with combined living water standpipe.
③ low-rise building fire hydrant pipeline diameter not less than 50mm, high-rise building fire hydrant vertical tube diameter not less than 100mm.
④ fire hydrant should be set in clear, easy-to-access location, such as stairs, corridors and fire the elevator room, the muzzle is installed at a height above ground for 1.1m, fire hydrant openings should be down or with vertical walls.
⑤ the same building you should use the same specification, hydrants, hoses and nozzles. --------------------------------------------------------------------------------

4.自动喷水灭火系统有什么功能？【答题要点】 --------------------------------------------------------------------------------
The first was during the fire automatic sprinkler, one is able to issue an alert.
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5. wet sprinkler systems works? what are the characteristics? 【 answer points 】--------------------------------------------------------------------------------
Wet sprinkler system works: fire, flame, or hot air to closed head heat sensitive components in action, opening, sprinkler nozzles. At this point, the network of water flow by static becomes so that water flow indicator action send electrical signals, in alarm controller indicates that a region has been in the water. Due to continuous spray nozzle opening pressure causing wet alarm valve pressure below the lower water pressure in the upper part, the role of the pressure difference, the original is powered by wet alarm valve will automatically turn on, pressure water flows through pipes for fire alarm valve, open channel to the hydraulic flow alarm, the alarm beep impact water alarm signal. Control Center under flow indicator or pressure switches alarm signal automatically started the fire pump pressure water supply to the system, to achieve sustained fire sprinkler.
Wet systems are characterized by: ① simple structure, convenient construction and management;
② economic good;
③ fire rapidly, the high rate of control;
④, wide application, apply to the setting in the indoor temperature is not lower than 4 ° c and no higher than 70 ° c inside of buildings, structures. --------------------------------------------------------------------------------

6. preaction sprinkler system? 【 answer points 】--------------------------------------------------------------------------------
In the later preaction valve distribution network are normally not sufficient water, and filled pressurized air or nitrogen or dry pipe, only in the event of a fire, the fire detection system with automatic open preaction valve, the pipeline filled with water into the wet system to avoid system failure caused by the loss of water-damaged; at the same time it is not dry sprinkler system must await the end of the nozzle movement back to sprinkler, gas caused the delay time jet nozzle; the system has the disadvantage of early warning device, in a timely manner prior to the alarm sprinkler actions to facilitate early organizational fighting. The system will wet sprinkler systems and electronic alarms technology and automation technology, make the system better and safe and reliable, thereby broadening the scope of application of the system.
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7. the deluge system must possess what 【 answer points 】
--------------------------------------------------------------------------------① water and pump can supply all the sprayer sufficient amount of pressure water-spraying.
② can provide various types of detection systems and people or remote control mode turn on the shower valve.
③ has qualified electric, hydraulic or pneumatic detection system, fire in the discovery, immediately turn on the shower valve.
④ rain network managers can design a priming water wet pipe systems, with no water pressure, but must have the relief measures to ensure that usually does not have water from overflow.
⑤ rain network must protect the whole reserve area, and install open sprinkler, protected area, the room temperature should not be less than 4 degrees centigrade.
⑥ transmission pipeline closed sprinkler or fusible lock closure pressure flow, making the entire protection area within any Office of the fire, were able to make the pipeline pressure.