- Details
- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 624
From the numerous installation inspections conducted we are fearful of dangerous situations in place at client premises. We have gas systems installed with unsafe manifolds in place. We believe all parties are to blame.
- Details
- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 614
The following are extracts from SANS 306:4 and SANS 14520:1
SANS 306:4 19.1
Valves and manifolds for high pressure systems shall be hydraulically tested to a minimum working pressure of 190 bar.
- Details
- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 642
Suppression gas actuation can be achieved by manual, hydraulic or electrical means.
Any method of actuation is acceptable within the standards, however we come across installations where little care is taken over this leading to systems that may never actuate at all defeating the whole purpose of why the gas system was installed in the first place.
- Details
- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 557
Installation of gas nozzles should provide an unimpeded, even distribution of gas throughout the protected area.
The following illustrations show the gas pattern on recently found installations.
- Details
- Written by: Keith Norgate
- Category: Gas Extinguishing
- Hits: 554
A recent false gas dump was brought to the attention of the FSIB and interesting facts emerged.
One afternoon in November an employee of an insurance company needed to enter a server room protected with an automatic gas extinguishing system. On approaching the area operation protocols required her to isolate the gas system by switching the gas system control from “automatic” to “manual”.