【 Weak current College 】 dry powder fire extinguishing system storage device layout and considerations

1. dry powder extinguishing system storage device to the dry storage containers, container valve, safety relief valve, gas storage bottles, driven cylinder head valve, header, pressure reducing valve, pressure alarm and control. And should satisfy the following requirements:
1 dry storage containers should conform to national standards of the current pressure vessel safety technical supervision regulations; driving gas storage bottles and filling coefficient should be consistent with national standards for the existing gas cylinders safe supervision regulations ".

2 dry storage container design pressure desirable 1.6MPa or 2.5MPa pressure stage, its powder extinguishing agent loaded quantity factor should not be greater than the supercharged time 0.85 should not be greater than 30s.

3 safety relief valve action pressure and rated emissions should be based on existing national standards of the dry powder fire extinguishing systems components General technical conditions "GB16668 implementation.

4 dry storage containers should meet driven gas coefficient, dry storage, output container valve export of dry powder conveying velocity and pressure requirements.

Second, the driver should use inert gases, carbon dioxide nitrogen use; moisture should not be greater than 0.015% (m/m), other gases shall not be greater than 0.006% (m/m); driving pressure cannot be greater than the dry storage containers for maximum operating pressure.

3. dry powder fire extinguishing system storage installations layout should facilitate inspection and maintenance, and to avoid direct sunlight. The ambient temperature is-20 ° c ~ 50 ° c.

4. dry powder fire extinguishing system storage device yishe in a dedicated storage device. Dedicated storage appliances set should satisfy the following requirements:

1 should be near the protection zones, export directly to outdoor or evacuation channels.

2 fire resistance ratings should not be less than the second.

3 should be kept dry and well ventilated, and emergency lighting should be provided.

5. when adopting moistureproof, antifreeze, fire and other measures, local application fire fighting systems storage device can be set at a fixed security fence.