Unlike Australia, the US doesn't have a ban on Halon (just Halon production), 
and it's still possible for existing Halon systems to be recharged using 
recycled Halon - especially if they're in a "critical applications".

As of 2011 there were Halon based systems at McMurdo 
(https://www.nfpa.org/News-and-Research/Publications/NFPA-Journal/2011/September-October-2011/Features/Nowhere-to-Go)
 - it may well be the case that these are still pending conversion.

The use of personal gas detectors is common in Oil and Gas when working in 
areas that may contain dangerous levels of CO2, Chlorine, Methane or Sulphur - 
perhaps it's time to see if these units can be adapted to detect suppression 
agents as well.

Regards,
-Brad.


________________________________
From: AusNOG <[email protected]> on behalf of Jim Woodward 
<[email protected]>
Sent: Thursday, 13 December 2018 8:17 AM
To: [email protected]
Subject: Re: [AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety

Hi,

I have been in facilities with Halon systems fitted, Pretty sure they've been 
illegal for some time now but there have always been stringent inductions 
around evacuation in the event of a triggered alarm, any system that silently 
deploys a gas based fire suppressant silently would be against code and highly 
illegal.

It could be in that case they accidently severed a pressurised fire suppressant 
line and were unaware that they had done so.

Jim.


From: AusNOG <[email protected]> On Behalf Of Paul Wilkins
Sent: Thursday, 13 December 2018 10:53 AM
To: [email protected]
Subject: [AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety

Every data centre has a fire suppression system. We're not used to thinking of 
this as a hazardous environment, but consequent to two techs being found dead 
working on a fire suppression system in 
Antarctica<https://www.theguardian.com/world/2018/dec/12/antarctica-two-technicians-dead-mcmurdo-station-ross-island>,
 I find myself wondering yet again, why there aren't more stringent controls 
around the fire suppression systems in data centres: viz - when you enter a 
data centre, how confident can you be you're not going to be quietly 
asphyxiated?

Kind regards

Paul Wilkins
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