[Esr-users] [New Logentry] Hall B Solenoid Trip and Cryo recovery

[kashy at jlab.org]

Logentry Text:
--
At 09:12 the solenoid fast dumpped. 
I was in the control room at the time. Peak pressure measured was 2.03atm (verifying the proper relief valve setting as in entry : https://logbooks.jlab.org/entry/3581899 )
The heater plates, upper and lower each cycled on and off a couple of times and the relief valve RV8670 sealed properly as soon as the inventory of about 30 liquid liters was vented  
Automated PID controls for recooling the magnet w/o intervention were modified for EV8611CD and thus far the magnet is recovering nicely w/o effecting the Torus or Buffer Dewar.

Average coil temperature of the magnet reached 35K and is now down to 23 K

Additional load on ESR is indicated to be 1.2g/s of liquefaction, but this flow meter is known to read 2x the actual value so the additional load is more likely 0.6g/s.



---

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/3591813
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20180827/3810bf94/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: clonpc21_20180827_115207.gif
Type: image/gif
Size: 56342 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20180827/3810bf94/attachment-0003.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: clonpc21_20180827_115142.gif
Type: image/gif
Size: 59701 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20180827/3810bf94/attachment-0004.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: clonpc21_20180827_115057.gif
Type: image/gif
Size: 58711 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/esr-users/attachments/20180827/3810bf94/attachment-0005.gif>