A water to vacuum leak has been found on FS#3. The leak is not detected on the leak detector, but can be seen as an increase in vacuum and on partial water pressure on the RGA

Wednesday, April 12, 2017, 17:11: The leak is on circuit EG (Coil +). Confirmed with water pressure

Wednesday, April 12, 2017, 17:21: RGA off. Turbos stopped.

Wednesday, April 19, 2017, 13:00: Leak detector hooked up to TS. (Check Turbo)

Wednesday, April 19, 2017, 14:00: He to FS#3.

Wednesday, April 19, 2017, 14:31: Minimal response on leak detector. No response on RGA.

Wednesday, April 19, 2017, 14:36: Manual valve closed. Leak detector off. RGA off.

Wednesday, April 19, 2017, 14:37: FS#3 purged.

Wednesday, April 19, 2017, 14:39: Ion gauge off. Turbos off.

Wednesday, April 19, 2017, 14:44: Leak detector disconnected.

Thursday, April 20, 2017, 07:35: Venting

Thursday, April 20, 2017, 09:10: TRI-COIL CTL-FEBIAD removed.

Thursday, April 20, 2017, 09:23: Water lines (E) (G) removed w/ block. 

Thursday, April 20, 2017, 09:30: Roughing.

Thursday, April 20, 2017, 10:04: Turbos on.

Thursday, April 20, 2017, 13:15: Leak detector attached & turned on.

Thursday, April 20, 2017, 13:25: Water lines FS#5 opened to create loop. Pressurized @ 30 PSI.

Thursday, April 20, 2017, 13:45: RGA on.

Thursday, April 20, 2017, 13:58: All lines opened, purged, and re-pressurized @ 30 PSI with He.

Thursday, April 20, 2017, 14:15: Minimal response on Leak detector. No response on RGA.

Friday, April 21, 2017, 07:26: Vacuum @ 4.87E-07T. No He response on RGA. Lines still pressurized @ 30 PSI of Helium.

Friday, April 21, 2017, 10:19: Vacuum level close, but not optimal after 24 hrs. 2e-07T range is optimal.

Friday, April 21, 2017, 10:22: Adjustment of Turbo (TSG:TP1B) flanges. Stud Flange to Chamber (loose nuts found). brief vacuum spike noted.

Friday, April 21, 2017, 10:27: Turbo pump flange to Stud Flange tightened. No change on vacuum.

Friday, April 21, 2017, 10:41: Test Stand Exhaust cleaned. Clog noticed. Monitor Vacuum

Monday, April 24, 2017, 10:24: Three leaks found on FS#3. Two on the soldered ends of the VCRS (Mid-line) and one on the block. Requires repair/replacement.

Tuesday, May 02, 2017, 08:32 : RGA off.

Tuesday, May 02, 2017, 08:33: Ion gauge & Turbos off.

Tuesday, May 02, 2017, 12:55: Venting