【 Weak current College 】 on linen and warehouse, yard design---Power By 【 China power house network 】

This article on the design of large and medium-sized and linen warehouse fire in theory and method, fire water storage capacity, pressure and ancillary facilities, construction work, discusses some of the experience.
Cotton in any country is one of the most important material is national economic life, an important part, it is important to the economy of a material. With the continuous development of the cotton industry, our bond increased year by year, the cotton-producing regions of new and reconstruction of a group with a large cotton interim repository.
Cotton, with are afraid of fire, flammable, smoldering, natural, and other characteristics, in the event of fire, more serious consequences, causing social consequences and economic losses are large, examples abound. Therefore, cotton is crucial for fire protection, fire-fighting water supply is cotton warehouse, yard in the design of an important part, this article is intended to be adopted on the supply and marketing cooperatives, Xinjiang Uygur Autonomous Region and flax company belongs to Urumchi Xinjiang production and construction Corps, Akzo, bachu, linen and interim storage of fire protection design and construction of complex construction of the proposed preliminary views, for Exchange of information.

First, the linen and warehouse, yard design principles and guidelines
1, fire design must implement national and regional laws and regulations regarding fire, specification, design combined with the actual conduct reservoir.
2, the fire risk in the case of cotton and hemp items, requires ongoing CPI warehouse architecture design, you must also consider the design of the fire water system. Content summary: fire extinguishing water must meet the needs of water consumption; to set up a temporary water supply network pressure system; to have a certain number of indoor and outdoor hydrant; when the Treasury each block covers an area of more than 1000m2, you also need to install closed sprinkler equipment, automatic fire alarm and fire control rooms. Fire-fighting equipment should be in the fixed fire-fighting products detecting Center identification promote fire-dedicated products.
3. design of the buildings, the cargo fire separation between the buttresses, the Division of fire prevention area, firewall settings, building fire resistance rating of not less than 2, the design should also take account of the fire ring road. These are to meet the domestic trade of the construction of the MoE, Lin warehouse standards "(hereinafter referred to as the" standard ").
4, design time should take full account of the fire protection system operation, their equipment maintenance, management, operation and maintenance convenience.
5, equipped with the necessary fire tactical tool. As mobile fire pumps, fire engines, large area also should be equipped with Jeep patrol car, Office area, ancillary buildings also should be equipped with fire extinguishers.

Second, the fire protection design
1, fire fire water: reservoir area is divided into two major indoor outdoor, when the repository every seat covers an area of more than 1000m2, warehouse volume to 5001-20000m3, according to the standard "and the" architectural design fire protection standard of fire water consumption consists of the following: (1) closed sprinkler equipment water 30l/s; (2) Interior 2 pistol water as 12l/s; (3) fire hydrant water consumption by 50 per cent should be 12.5l/s, and water consumption about 55l/s. Open yards total capacity on 100l-5000t, hydrant water consumption for 50l/s (180m3).
2. fire cistern water
For repository, fire, can effectively control the fire source, fight fire is the most basic purposes. Fire duration calculation by three hours, the first hour of water consumption is 55l/s (198m3), is the second hour plus indoor hydrant water hydrant water consumption of and is 37l/s (133m3), the third hour is 133m3, three hours and is 464m3, should be not less than two 300m3 cistern; open-air fire duration to 6 hours, the need to build two 500m3 pool. But in practice, using water from fire-fighting equipment usage, water consumption has increased.
In the design, and linen warehouse uses a dedicated frequency conversion water supply equipment, fire protection, while at the same time, the online circular tube hydrants density, so do the standards on the basis of water has increased. This is because the area using a dedicated frequency conversion water supply for fire equipment, fire protection, fire hydrant quantity according to actual use numbers to automatically powered fire pumps, fire increase also the alternate pump will work status, July 1996, a company in the region and flax, a group of cotton bag being struck by lightning in the fire, then started the two fire fighting equipment, fire control pump of some maneuvering, two fire and use a number of barrels, and other fire-fighting tools, half an hour spent fighting water about 600m3, visible fire water storage deposit less than is dangerous. In economic terms, the area of site conditions permit and linen reservoir, should increase the fire cistern is appropriate, especially water-poor regions. As autonomous region and flax cotton region Urumqi branch is the most typical, local groundwater recharge in poor condition, with only a glance 270m deep water discharge 20 — 30m3/h, and also away from the city of water, fire, does not guarantee that the fire water, so that large and medium-sized and linen water storage reservoir, fire, less on security is very bad.
In addition, in the area should also be decentralized sporadic and medium fire cistern which is very necessary that enables mobile fire pump can effectively play its role, and to configure a m diameter fire save buckets, portable bucket.
The following table for some of the recent design of large and medium-sized and linen area fire water storage capacity: ordinal station fire water storage capacity (m3) of water (m3 reservoir scale (MU), 1 autonomous region and flax company wulumuqi agent branch in the autonomous region and flax warehouse 4460 2102, linen and linen company Akzo 2000100427.23 autonomous region and flax warehouse company bachu-flax and linen 2000 6244 Corps warehouse company Akzo and linen warehouse 1000 296.56www.3722.cn largest management repository download
3, fire hydrant spacing layout
The architectural design fire protection standard law "should not be greater than the fire hydrant spacing 120m". During the cotton market, every day, hundreds of vehicles entering and leaving theArea, 1 transit no cotton area or cotton no diaoba tasks, some area locations to accommodate limited, in addition to filling up the shelves, often very high stacking, hydrants spacing is too big or not in the hydrants, fire channel on cotton fire effects are large, and even influence the success or failure of the fire-fighting.
Through the design and on-site operation management, we believe that design subject should maintain more than one pipe, in open yard pipe line segment, the spacing is not greater than 60m layout a fire hydrant is more reasonable that some sites should also be appropriate to increase the density, the warehouse door layout should set the hydrant.
4. hydraulic pressure
In the spirit of energy conservation investment and reduce costs, many independent fire fighting system at design time, still use when fire occurs before the start of fire-fighting equipment. In large and medium-sized fluid reservoir while roving patrols, but if there is fire, then notification duty starting fire equipment, fire point pressure reaches the fire pressure is forfeiting the opportunity. We did this experiment, the dots in the fire pump 718m accident (line distance), in the event of fire, inform the person on duty starting fire equipment, fire point pressure reaches the fire enrich the water need 5-10 minutes, one of spots open fire hydrant, only using exhaust for ten minutes, the fire cannot be implemented.
It is understood in a linen and warehouse is still manual on fire fighting equipment, in order to maintain network within a certain pressure, pressure to kewang day many times, the management is very inconvenient.
For large and medium-sized fluid reservoir, and further away from the fire-fighting squadrons or helpless and linen area, in the design to set up a temporary high fire protection system, and the network always within a certain pressure, when the discovery of fire, open fire hydrant to fire as soon as you can. The principle is to open fire hydrant, pipeline pressure decrease, monometers starts fire pump. In recent years, the constant fire dedicated product development and application, you can implement immediately fire discovered fire, in engineering design and actively promote the use of the relevant State departments and identification of specific products to promote fire safety on fire, work of great significance.
In the design you should be aware of fire gun export design pressure should not be too large, when the pressure exceeds 0.5MPa two trained firefighters required close grip a fire guns you can use. Water pressure is too big, not necessarily to cotton and linen, friendly fire, particularly bulk and disintegrating package cotton, water pressure in the pressure is off under the effect of cotton might been beaten into other cotton bag, causing new fire. Therefore, in the fluid reservoir is generally to have scattered in precisely, DC gun or curling DC gun and fire-fighting tools.
5, fire hydrant wells and pump adapter, fire signs pile
Fire hydrant wells and pump adapter, fire signs pile is fire facilities, an important part. Design time, if you only consider pipeline laying depth to satisfy the requirements of permafrost, and ignore the fire hydrant installation dimension itself with the use, maintenance and management of convenience is not enough. National Atlas on outdoor deep-fire hydrant wells caliper 1.2m, toroidal the wellhead, brick, but found in construction, DNl00 double diameter DN65 hydrant just plugging in the mouth, especially for insulation wellhead, firefighters need logging operation, very inconvenient, especially night fire, the fire hydrant's head is extremely easy to go down the operations staff to cause harm, in the winter well indoor hydrant repairs, maintenance inconvenient. Thus in the construction we will fire hydrant wells caliper to the wall molding 1.4m for straight type, reinforced concrete cover and reinforced concrete and insulation-head, this is because in the fluid reservoir, brick wellhead is extremely easy to be crushed and cotton stealthily substituting affect use and cast iron manhole cover and wood insulation cover of space, you can place a fire hose, after several years of operation, that the effect is very good
.
Beside the reservoir, set the pump adapter is important. When the fire-fighting equipment available for any outages, fire, mobile fire pump pressure directly to the network, you can make a fire to fire point with fire water pressure. 1997 our autonomous region and flax and linen warehouse, Urumqi, respectively took several fire point (including negative point) test, which reaches more than 0.35MPa pressure, its results are satisfactory.
For the night, or snow, fog fire hydrant location when you quickly find, set fire signs pile. We found in the operation, design of outer brush red Enamel signs pile reinforced concrete, direct purchase side of the road, lane bends, some 90 per cent by the car ran bad, steel welded pipe after 12cm×12cm×80cm hollow signs pile, pouring concrete and leaving the holes into the red flag, in use in 100% intact rate.

III. concluding remarks
We in Urumqi, Akzo, bachu, large and linen warehouse fire design, from the start of the fire to the tank, water automatic water uses Automation control. Due to the linen and warehouse the gradual improvement of fire fighting equipment, plus area equipped with fire vehicles and mobile fire pumps, fire-fighting squadrons of vigorously support, and linen warehouse fire capacity overall improvement in the area of any fire point to implement holistic, interchange fire jobs.