Date: Fri, 30 Apr 2010 10:00:49 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Pierre Chantal <Pierre.Chantal**At_Symbol_Here**HC-SC.GC.CA>
Subject: Re: Gas Regulator Question
In-Reply-To: <F3558EC01B504A4C88E5400C2DC5C2D7**At_Symbol_Here**bruekbergterm1>

This is the how I have been told to proceed when opening a gas tank... 
some 35 years ago. This practice can have been associated with the 
construction design of the old gas regulator where a few explosion of the 
gauges were reported. The design of the gauges used for gas regulator has 
changed over time and you can see a safety devices on the back of most 
(not all) new gauges were a metallic flap is screwed on the back of the 
gauge to allow any pressure build-up to be release away from the face of 
the operator. 
I never been the witness of any such explosion but I am still avert my 
face away from the regulator gauge when I have to open one....


Ben Ruekberg  
Sent by: DCHAS-L Discussion List 
2010-04-30 09:19 AM
Please respond to
DCHAS-L Discussion List 


[DCHAS-L] Gas Regulator Question

            Long ago, when I was taking welding lessons, the instructor 
taught us to avert our faces from the regulator gauges when opening a gas 
tank because of a possible defect in the regulator that would pressurize 
the gauge and explode the glass.
            Since that time, I have read several books on laboratory 
practices and do not recall any of them alluding to the practice of 
averting oneีs face when opening a gas cylinder.  Should they?
With all the accumulated experience in this group, has anyone heard of 
this practice or hazard?
            (Note: My old instructor might have been confusing a defective 
regulator hazard with the one resulting from using a contaminated 
regulator with an oxygen cylinder.)
            Thank you very much,

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