[Dsg-htcc] Back Up Power for Hall B Gas Controls

[Marc Mcmullen]

Hi Denny,


Yesterday I disconnected the SFL3 Gas Controls from an extension cord and reconnected it to the local utility power outlet. The Gas Controls equipment is on a UPS however that is only meant to last long enough for on-call staff to get on site.


The HTCC is a critical system which would suffer during an outage of substantial time. In the past, I believe the gas supply has been switched over to bypass the MFC in the case of an outage. I am not sure if the bypass circuit is still in service. This is the most efficient method of mitigating the effects of a massive power outage. I strongly suggest running the HTCC purge using a Rotameter during the holidays.


Additionally, it might be a good idea to run an electrical circuit which is connected to generator back-up  to the gas controls on SFL3, FC deck 0, and maybe even the Gas Shed control room.


Regards,

Marc
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-htcc/attachments/20181211/22cb72cd/attachment.html>