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- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 907
Dirt traps are an essential part of any gas system installation but there are several parameters the dirt trap must feature, not like the one below.
If there is any debris or particles present in the Fixed Gaseous Fire Extinguishing Systems pipework, it will be pushed through the pipe on system discharge and can collect in the nozzles at the end of each pipe run blocking the nozzle(s) and adversely affecting the uniform distribution of the gas agent. This may also produce contamination of the protected area/asset.
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- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 575
HARD DISC DRIVE CRASHES
Further occurrences of hard disc drive crashes have been reported this year incurring large costs for the end users/ insurers.
The sound pressure levels of high-pressure gas suppression systems discharging can cause disc drives in the computer cabinets to crash. This is due to the sound levels that can be caused by these gas suppressant discharges. Sound levels of 110 db and above are achieved by high pressure systems discharging.
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- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 602
The FDIA recently did investigations regarding the operation of audible and visual alarm warnings being used in gas protected areas. Concerns were raised by our inspectors as what the correct sequence should be. It has been seen that each contractor/ consultant has a different opinion on this subject and no two gas areas were the same.
Read more: Audible & Visual Warnings for Gas Protected Areas
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- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 646
National standards and persons in the gas suppression industry use many words followed by "pressure", Storage pressure, Downstream pressure, Working pressure, Discharge pressure and the least understood Developed pressure.
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- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 630
All clean agent gases, at a concentration above the extinguishing concentration, must be held for a period of 10 minutes in an enclosed environment. (SANS 14520 - 7.8)
CO2 used on all total flooding deep seated fires shall be maintained for 20 minutes. (SANS 306-10.5)