[Dsg-hallbgas] Fwd: [Dsg-rich] planned clean power outage in Hall B, unable to swap cRIOs to utility power due to disabled ODH monitoring

[Brian Eng]

This will also effect the FC cRIO, which runs the LTCC.

I'm unsure about the GS cRIO (which handles the DC) as it isn't clear from the label what transformer it is supplied by.

The SF (SVT, HTCC, MVT) is already on an outlet labeled as utility power so it should be unaffected.


In any event, once power is restored the cRIOs should run their start-up applications and work as usual (assuming no issues with networking).

> Begin forwarded message:
> 
> From: Tyler Lemon <tlemon at jlab.org>
> Subject: [Dsg-rich] planned clean power outage in Hall B, unable to swap cRIOs to utility power due to disabled ODH monitoring
> Date: May 21, 2018 at 5:01:06 PM EDT
> To: dsg-rich <dsg-rich at jlab.org>
> 
> Hello,
> 
> Tonight from 5:00PM to 3:30AM, there is a planned power outage of Hall B clean power. DSG's plan was to go to Hall B late today to swap the RICH cRIOs to utility power to ensure the cRIOs stay powered.
> 
> Without communication, ODH monitoring for Hall B has already been turned off, closing Hall B to any access. We are unable to swap the RICH cRIOs to utility power as planned, so the RICH cRIOs will lose power during the outage and interlock sensor monitoring will be lost.
> 
> However, RICH's N2 supply is NOT dependent on power and N2 flow will remain continuous during the power outage.
> 
> When clean power is restored and ODH monitoring is re-enabled, we will be able to access the Hall and confirm all cRIOs and sensors are functioning correctly.
> 
> Best regards,
> Tyler
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallbgas/attachments/20180521/8d7f62e1/attachment.html>