【 Weak current College 】 pharmaceutical clean production workshop fire extinguishing system design---Power By 【 China power house network 】

In recent years, as China's people's living standards, health has become the majority of the people's basic needs, subject to the broad masses of growing attention, thus promoting the medicines and health products industry faster development. Since the pharmaceutical production enterprises on the sanitation requirements are higher, most take the clean production processes, appropriate to the fire extinguishing system has also put forward higher requirements. To this end, the relevant State departments with national economic development and current status of pharmaceutical production enterprises, organizations drafted the pharmaceutical industry Cleanroom design specifications "(GMP), the pharmaceutical industry Cleanroom manufacturing plant design has a specification and guidance role. The architectural design fire protection standard (GBJ16-87, 2001 Edition) and the clean room design code (GB50073-2001) as well as pharmaceutical clean production plant fire-extinguishing system design provides basic, should follow the principle. Nanjing economic technical development zone of existing pharmaceutical clean production enterprise 17, author on clean pharmaceutical production plant fire system design of the research, now combined with research on pharmaceutical clean production workshop fire protection system design elementary aggregate and superficial.

An, pharmacy clean production workshop fire safety features

(A) pharmaceutical clean production workshop, the majority of reinforced concrete frame structure, fire resistance class 1, grade 2, but thanks to cleaner production requirements, internal walls and partition typically take sandwich color steel plate weight package, electric pipeline and most other production pipeline from walls and sandwich color steel plate cracks through, increased the risk of fire.

(B) clean production area often only one entrance and require more complex personnel decontamination channels in order to enter the clean production area, in the event of fire, evacuation of people and organizations are more difficult to fight.

(C) clean room because you want to maintain a certain temperature and humidity, the most clean area a closed highly, in the event of fire, toxic gases and smoke is emitted in a timely manner.

(4) the cost of clean production workshop, the workshop has a lot of precision instruments and valuable equipment, product technology content is high, value, a fire can easily result in major economic loss.

(5) many pharmaceutical clean production workshop, the vast majority of the fire risk is part of a class c, stage due to the use of a certain amount of different kinds of inflammable, explosive, corrosive or toxic gas, liquid, fire risk in the case of the CPI.

2. Select the fire extinguishing system

(A) because the pharmaceutical industry Cleanroom major fire hazard, so regardless of size, generally need to set the indoor hydrant system. Indoor hydrant system pressure should meet the most negative point fire hydrant water requirements. As a pharmaceutical clean production workshop, the majority of monolayer, in municipal water pressure to meet the minimum requirements should be considered by the high pressure system for design, minimum for municipal water does not meet the requirements, generally take the following two measures:

1, in the plant or plants of the highest parts of the set of high water, the fire water tank at high level excurrent pipe booster pump set on fire, fire resistance, through the settings in the indoor hydrant box at the fire button to start the fire pump on the roof, while the fire alarm signal. This approach is generally more suitable for small pharmaceutical cleanrooms.

2. plant or plants of the highest positions still has high water, but the roof does not set the fire pump, indoor hydrant box or set the fire button, but rather in the factory of fire-fighting pump room are equipped with fire-pressure water sharing equipment, usually rely on fire-pressure water sharing equipment automatic make and maintain the fire pipe pressure required, when there is pressure to extinguish continuing decline, once the water pressure drop over the lowest pressure set value, the fire pump house fire pump work automatically, at the same time the fire alarm signal, through water mains by factory fire pump automatically maintain fire required pressure. This approach is generally more suitable for large and medium-sized pharmaceutical cleanrooms.

(2) for the production of locally due to nature of the use of different kinds of flammable, explosive gases and liquids in the region, according to the nature of the gas or liquid to determine using mobile or fixed fire-fighting equipment, depending on the situation of local gas fire extinguishing system, for the protection of smaller independent compartments, as far as possible, consider using the no network of gas fire extinguishing systems for protecting large or cubicle more single region or multiple regional clean room, the General considerations set independent cylinders of a network of gas fire extinguishing system.

(3) the medical evacuation of clean production workshop, should be set mechanical smoke extraction facilities. Longer than the inner passages 20m should set the exhaust system, the exhaust fan using ordinary steel or special-purpose centrifugal fan, axial-flow fan and blower inlet and exhaust pipes 280 ° c when installed on the system will automatically close the fire damper. When a fire occurs, you can automatically or manually open the exhaust valve, exhaust fan is automatically opened for smoke extraction. When the gas temperature reached 280 ° c, smoke fire valve closes and output signal cut off the exhaust fan. The amount of exhaust smoke exhaust fan in accordance with the calculation and 60m3/m2 single smoke partitions within the exhaust volume not less than 7200m3/h, if several smoke partition joint one exhaust fan, then the exhaust volume in accordance with the maximum preventing smoke partition area 120m3/m2, the exhaust outlet from the smoke partition farthest point of horizontal distance not exceeding 30m.

3. fire-fighting configuration requirements

(A) of the pharmaceutical industry Cleanroom indoor hydrant system for fire-fighting water should not be less than 10L/s, each unit of water should not be less than 5L/s. Fire hydrant water column of water gun full 10m should not be less than the diameter of the fire hydrant should provide for fire protection design, is equipped with hose 65mm length should not exceed 25m, water gun nozzle diameter should be not less than 19mm.

(B) as cleanrooms áir General number is located in the upper portion of the clean rooms, in addition there is also a ceiling in large diameter duct and a large number ofPipeline, resulting in cleanrooms-generally high, clean room technology mezzanine or technology Avenue, should set indoor hydrant system.

(3) in clean Workshop including clean room and its technical dissection should be according to the different nature of the production and use of different types of chemical substances to determine the type of setting the fire extinguisher, capacity, number and spacing, so that you can use to control the initial fire.

IV. fire-fighting equipment layout

(A) fire hydrant should lay it in easy to access and easy to find by visitors to the aisle or clean corridor, fire hydrant layout spacing should follow the actual fire personnel walking route to determine protection RADIUS, because clean room due to the needs of the production process is often only one entrance and require more complex personnel decontamination processes in order to enter the area of clean production, while production area due to the costs usually are compressed as much as possible, while the production area of shapes according to the process or device needs a irregular shape, not to fire hydrant protection RADIUS to determine layout spacing.

(Ii) Although the pharmaceutical clean room usually one to two-story building, in accordance with the architectural design fire protection standard (GBJ16-87, 2001 Edition) can not fire pump adapter, but considering its size usually larger and the complexity of internal lines, from fire safety requirement should consider setting fire pump adapter, so that in the absence of a fixed water use original fire hydrant system for extinguishing fires.

5. fire fighting pipe layout

(A) for the fire pipe layout taking into account the characteristics of the purification plant, the workshop takes up way to type water under the water dry pipe laying in the ceiling, within the pipes from top to bottom access workshop within the fire hydrant; avoid laying pipeline buried because the pharmaceutical industry Cleanroom internal General for light partition, if you enter a room on the ground floor is generally only of light partition, location not 5cm thick embedded access, and second, once the construction party needs under market conditions on the production line or production of products for partition resizing, pipeline from the floor into the Interior of the partition. But pay attention, laid in ceiling in the pipeline should be taken to prevent condensation heat preservation measures against due to pipeline luning underwater droplet to the enterprises producing unnecessary losses.

(2) for the protection of large or cubicle more flammable and explosive single region or multiple regional clean production workshop set for independent cylinders of a network of gas fire extinguishing system, the pipeline route distance depending on the nature of the different gases and release time determines to every region of the maximum allowed length for comprehensive determination.