[Hallb-engineering] Solenoid Status Update

Dave Kashy kashy at jlab.org
Wed Jul 12 07:53:06 EDT 2017


Highlights

Monday:
Day shift fit up the MR return piping and tacked it in.
Second shift 
1) found a 1E-6 leak on the BL shield circuit at the connection between the rectangular tube and the bi-braze connection.
2) Fully welded out the MR 4K return line 

Tuesday: 
Day shift
1) Pin pointed two leaks with snoop and made repair plan with Mike Martin included
2) Completed flow tests of BL and BR flow tubes and as hoped they are about the same so the temperature of the shields should be similar both left and right side (see attached file)
3) Continued welding on 4K Reservoir piping
4) Did studies on Z supports 
5) Survey group took data on SST to Magnet and magnet bottom plate to save time with SST clamshell triming and fitup

Second shift
1) repair of the leaks in the aluminum weld
2) full repeat of the cold shock with better N2 reservoirs to assure better cooling
3) leak test of the repair (successful with NDL at 1E-9)

Today:
Day shift plan
1) Pressure test Magnet shield circuits again to 320psig
2) Final leak test of Magnet shield circuits
3) Final flow test of repaired shield circuit
4) Analysis of the Z support
5) Welding of the MR 1/2" and 1/4" OD tubing
6) More electrical tests this evening ( not to disturb welding progress per RF) 

Second Shift:
1) Fitting and welding of Magnet shield circuit piping to SST shield piping
2) Vaporizer leak testing and transport to Hall B?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5279 - bagged joint was filled with helium for most sensitive leak test of repair.JPG
Type: image/jpeg
Size: 2169877 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0007.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Shield Flow circuit measurements -before repair on BL.xlsx
Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Size: 13982 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0001.xlsx>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5270 - initial shield circuit test.JPG
Type: image/jpeg
Size: 1711922 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0008.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5275 - pin pointed leaks.JPG
Type: image/jpeg
Size: 2297937 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0009.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5276 - foam on leaks.JPG
Type: image/jpeg
Size: 1339295 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0010.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5277 - White board 7_12_17 am.JPG
Type: image/jpeg
Size: 2152007 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0011.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5280- Josh brushing new weld 7_12 am.JPG
Type: image/jpeg
Size: 2334854 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0012.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_5281- piping 7_12 am.JPG
Type: image/jpeg
Size: 2178085 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/hallb-engineering/attachments/20170712/c8a9525a/attachment-0013.jpe>


More information about the Hallb-engineering mailing list