switched everything off to prepare for scheduled power outage on Monday

Restarted the PC at the Test Stand.

Restarted the Archivers; currently pumping down the separator area.

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.

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

Shut down TSGTP1A due to noise (possibly from bearings) after consulting Edi.

System will be vented and gas lines purged with air, then nitrogen.

Thursday, July 12, 2012, 09:43: Shut down TSGTP1B.

Thursday, July 12, 2012, 15:48: bypass removed

• 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.

Aluminum oxide found inside TSHSV1 and the copper line to TSHUHV1.

SV1 replaced and copper line cleaned.

see e-fault 6142

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.

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.

Anders Mjos wrote:

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.

 With the help of Rick, the leak was fixed.

The vacuum pump for the gas lines was removed for repairing the leaking hose.

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.

Thursday, July 19, 2012, 09:35: Switched off both turbos.

Thursday, July 19, 2012, 10:23: Venting

Anders Mjos wrote:

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.

 Thursday, July 19, 2012, 11:29: Wiped both o-rings, grooves and sealing faces with kimwipes. Removed black and brown residues.

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

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.