Tuesday, April 18, 2017, 07:30: TSG : TP1B Tripped on Saturday.

Tuesday, April 18, 2017, 07:40: TSG : BV1B opened. TSG : TP1B restarted.

Tuesday, April 18, 2017, 07:48: TSG : TP1B failed to restart.Turn off.

Tuesday, April 18, 2017, 07:59: TSG : BV1B opened. TSG : TP1B restart attempt. No audible response detected.

Tuesday, April 18, 2017, 08:01: The turbo pump is off and BV1B closed. Fault report entered #9815.

Tuesday, April 18, 2017, 09:40: Ion gauge, remaining turbo pump off.

Tuesday, April 18, 2017, 13:00: Vacuum Group arrival to change TSG : TP1B.

Once the turbo pump cooling line was loosened slightly, a slight water leak occurred. Line snapped. Water leak. Valves to all turbo pump cooling closed.

***NOTE*** - From Thursday, November 24, 2016, 08:05: TMS:TP2

Friday, November 25, 2016, 14:45: Turbos at speed. Vacuum at 1.9E-5 T

*** Note *** : One of the copper cooling lines was leaking. The line was fixed. Monitor. <---- Due to this recurring issue, the decision was made to air cool the turbo pumps.

Tuesday, April 18, 2017, 14:10: Air cooling to replace water cooling. TSG : TP1A already has air cooling. Replace the cooling on the other 3 of 4 turbo pumps.

Tuesday, April 18, 2017, 15:27: All turbo pump cooling replaced with air cooling. TSG : TP1B successfully replaced.

Wednesday, April 19, 2017, 07:57: Roughing.

Wednesday, April 19, 2017, 09:01: Turbo pumps on. Bypass made on water flow (Still air cooled overall)

Wednesday, April 19, 2017, 09:15: TSG :TP1A accidentally tripped. Restarted.

Wednesday, April 19, 2017, 09:42: Both turbo pumps off. Unable to achieve proper vacuum.

Wednesday, April 19, 2017, 11:04: Roughing.

Wednesday, April 19, 2017, 11:44: TSG :TP1A on.

Wednesday, April 19, 2017, 11:51: TSG :TP1B on.