Inergen systems losing gas

[kurnal]

One of my clients has 7 inergen systems installed and commissioned early this year. Not  a week goes by without  one or more cylinders losing their gas and needing replacement. I have been given all sorts of reasons- undertightening, overtightening, poor O rings,O rings fitted and not needed, O rings not fitted when needed, a bad batch of gauges.

Is this a general problem and is it just Inergen that seems so elusive?

[Firedog]

We had a similar problem with a FM 200 installation which was traced i understand to a pressure release valve being faulty after replacement  all has worked well and still is

[Kevin M]

inergen is like all high pressure gas cylinders used in fire suppresion,They need leak detection done on installation  thoroughly and  methodically '
each gauge has a o ring fitted to the bottle via a shreider valve ,link hoses and manifold hoses,al potential culprits,
There are thousands on site with no problems.

[AnthonyB]

since the original post I've seen various systems, yet only with Inergen ones i've seen cylinders low, even after recent services - although the overall %age is probably low, it does seem Inergen banks are more susceptible to this

[kurnal]

Thanks to all for your responses. My installations have settled down a bit- only 3 cylinders down on the last monthly audit, and only by about 7-10%. Many of the gauges were eventually replaced and this seemed to cure most of the problems.

I have also found that the cylinders are not firmly secured in their cradles (by design)  and that natural building resonances are causing them to move a little, and this has the effect of loosening the trigger pipe connections over time.