 Friday, July 06, 2012, 15:36, Friedhelm Ames, , , , , , , Done, switched everything off
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switched everything off to prepare for scheduled power outage on Monday |
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Monday, July 09, 2012, 11:14, Aurelia Laxdal, , , , , , , , Test Stand status
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Restarted the PC at the Test Stand.
Restarted the Archivers; currently pumping down the separator area. |
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Monday, July 09, 2012, 12:57, Anders Mjos, , , , , , , Done, Vented
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Tuesday, July 10, 2012, 16:01, Anders Mjos, , , , , , , Problems/Solutions, Turbo replaced - cleaning chamber recommended
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A new turbo has been installed. Eddie said the other one had crashed but not catastrophically. He recommends the test stand be wiped clean before pumping because there is a fine layer of Aluminum dust on the chamber base.
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Wednesday, July 11, 2012, 11:16, Anders Mjos, , , , , , , In progress, Pumping down - with new turbo pump
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Wednesday, July 11, 2012, 15:30, Anders Mjos, , , , , , , Problems/Solutions, Restarting turbos after power bump
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Wednesday, July 11, 2012, 15:27: Started TSGTP1A and 1B
Wednesday, July 11, 2012, 15:31: Started TSMTP2 and 6
Wednesday, July 11, 2012, 15:33: TMS tubos at speed. Vacuum 4.8E-7
Wednesday, July 11, 2012, 15:34: TSG turbos at speed. Vacuum 9.5E-6 |
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Thursday, July 12, 2012, 09:05, Anders Mjos, , , , , , , Problems/Solutions, Shut down TSGTP1A - bearing noise
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Shut down TSGTP1A due to noise (possibly from bearings) after consulting Edi. |
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Thursday, July 12, 2012, 09:44, Anders Mjos, , , , , , , In progress, Venting
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System will be vented and gas lines purged with air, then nitrogen.
Thursday, July 12, 2012, 09:43: Shut down TSGTP1B. |
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Thursday, July 12, 2012, 12:23, Anders Mjos, , , , , , , Done, TSH:SV5 bypass on
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Thursday, July 12, 2012, 15:48: bypass removed |
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Thursday, July 12, 2012, 13:41, Anders Mjos, , , , , , , Done, purging gas lines with air
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- gas lines purged with air for 60 min (through TSHUHV1 and TSHSV4).
- gas line allowed to fill with nitrogen to 300 torr and evacuated. repeated 3 times.
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Thursday, July 12, 2012, 13:49, Anders Mjos, , , , , , , Problems/Solutions, Aluminum oxide found inside TSHSV1
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Aluminum oxide found inside TSHSV1 and the copper line to TSHUHV1.
SV1 replaced and copper line cleaned. |
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Thursday, July 12, 2012, 15:49, Anders Mjos, , , , , , , , test stand vented for TP1A replacement
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see e-fault 6142 |
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Monday, July 16, 2012, 15:46, Anders Mjos, , , , , , , In progress, Pumping down
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Monday, July 16, 2012, 15:11: Roughing.
Monday, July 16, 2012, 15:38: Turbos started.
Monday, July 16, 2012, 15:46: TSGTP1B at speed TSGTP1A timeout.
Monday, July 16, 2012, 15:54: Both turbos at speed. Vacuum 3.6E-5.
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Tuesday, July 17, 2012, 10:10, Anders Mjos, , , , , , , Problems/Solutions, Gas lines leak checked - air supply leak on manifold
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Leak found on the Ne supply line. 1E-4 - 1E-5 range. Replaced fittings. Had to use one brass piece. Leak rate 6E-9 (probably due to Ne response). No response to He.
Leak rate around low E-8 with regulation valve open.
When closing the HV rack, an air supply leak developed on the manifold for the valves. Shut off air supply. Valves still operational, but requires opening up air supply to actuate.
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 Wednesday, July 18, 2012, 14:08, Anders Mjos, , , , , , , Problems/Solutions, Air supply leak on manifold fixed
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| Anders Mjos wrote: |
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Leak found on the Ne supply line. 1E-4 - 1E-5 range. Replaced fittings. Had to use one brass piece. Leak rate 6E-9 (probably due to Ne response). No response to He.
Leak rate around low E-8 with regulation valve open.
When closing the HV rack, an air supply leak developed on the manifold for the valves. Shut off air supply. Valves still operational, but requires opening up air supply to actuate.
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With the help of Rick, the leak was fixed.
The vacuum pump for the gas lines was removed for repairing the leaking hose. |
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Thursday, July 19, 2012, 08:42, Anders Mjos, , , , , , , Problems/Solutions, Leak checking source chamber - leak found on front door
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Due to high vacuum a leak check will be done on the system.
Thursday, July 19, 2012, 09:00 : Base leak rate 4E-9 atm-cc/sec
Thursday, July 19, 2012, 09:07: Leak detected on side door. Mid 1E-8 range.
Thursday, July 19, 2012, 09:08: Leak detected on front door. Mid 1E-6 range. Main leak left or bottom side.
Thursday, July 19, 2012, 09:20: Leak on side door could not be reproduced. Previous response possibly due to "cross-talk" with front door. |
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Thursday, July 19, 2012, 09:35, Anders Mjos, , , , , , , Done, Venting to investigate leak on front door
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Thursday, July 19, 2012, 09:35: Switched off both turbos.
Thursday, July 19, 2012, 10:23: Venting
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Thursday, July 19, 2012, 11:31, Anders Mjos, , , , , , , Problems/Solutions, Wiped o-rings and sealing faces
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| Anders Mjos wrote: |
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Due to high vacuum a leak check will be done on the system.
Thursday, July 19, 2012, 09:00 : Base leak rate 4E-9 atm-cc/sec
Thursday, July 19, 2012, 09:07: Leak detected on side door. Mid 1E-8 range.
Thursday, July 19, 2012, 09:08: Leak detected on front door. Mid 1E-6 range. Main leak left or bottom side.
Thursday, July 19, 2012, 09:20: Leak on side door could not be reproduced. Previous response possibly due to "cross-talk" with front door.
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Thursday, July 19, 2012, 11:29: Wiped both o-rings, grooves and sealing faces with kimwipes. Removed black and brown residues. |
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Thursday, July 19, 2012, 11:32, Anders Mjos, , , , , , , Done, Pumping down
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Thursday, July 19, 2012, 11:29: roughing
Thursday, July 19, 2012, 11:49: starting turbos
Thursday, July 19, 2012, 11:54: TP1B at speed
Thursday, July 19, 2012, 11:58: TP1A timed out
Thursday, July 19, 2012, 11:58 TP1A restarted. at speed.
Thursday, July 19, 2012, 11:59: both turbos at speed. Vacuum. 2E-5
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Thursday, July 19, 2012, 12:59, Anders Mjos, , , , , , , Problems/Solutions, Leak checking doors - no response
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Thursday, July 19, 2012, 12:57: Doors leak checked. No response. Base rate 1.6E-8 atm-cc/sec. TP pressuer 0.0E-4 Torr . TSGIG1 4.2E-6 Torr. TSG:CG1A 0.014 Torr. |
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