[dsg-svt] Changing nitrogen bottles

[Yuri Gotra]

Hello Brian,

Purging the detector is critical for the detector safe operation and 
having multiple trips of the whole SVT due to high humidity should be 
avoided. What I mean by "timely" is to periodically check the pressure 
and replace the bottle not when it is completely empty and SVT trips but 
such that SVT is always purged. Especially before the weekend, please 
make sure the bottle lasts till Monday.  The cost of gas bottle is low 
and is over-weighted by the detector safety matters and downtime impact 
on commissioning. Thank you for understanding.


On 5/15/17 10:16 AM, Brian Eng wrote:
> Hi Yuri,
>
> The bottle ran out on Sunday and Marc changed it out when he came in this morning; I'm not sure how we could be much more timely than that.
>
> Getting uninterrupted gas flow with a single bottle is going to be difficult. If it is really critical that the gas flow not ever be stopped (I personally think it's okay having short downtimes, but it's ultimately not my call) you might want to see about having a DA design a 2 bottle setup.
>
>> On May 15, 2017, at 8:40 AM, Yuri Gotra <gotra at jlab.org> wrote:
>>
>> It would be great if DGS could support uninterrupted commissioning of the SVT by timely replacing the gas bottles. Thank you
>>

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