[Hallb-engineering] [New Logentry] ESR Valve box Valve leak

kashy at jlab.org kashy at jlab.org
Thu Jan 3 08:55:02 EST 2019

Logentry Text:
I was continuing the setup for 80K flowing of the Hall B Magnets so we can start after they reach ~60-70K and the Torus completed its insulating vacuum outgassing ("Burp"). I opened the cold and warm return valves from in the distribution box PV8522TCD and PV8522TR. I noticed that CTD8521 rose breifly then started to fall rather quickly. This valve must be leaking throug its seat quite a bit. 
The seating force should be checked when possible in conjunction with Hall B.
During an ESR downtime the seat should be checked and possibly replaced.


This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3641280
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