Darwin reported that he was unable to achieve vacuum of 150mTorr. The flex-line HS had been removed last week for modifications. SS gaskets received today. Replaced HS gaskets (Cu).
Monday, July 13, 2020, 11:00: Roughing.
Monday, July 13, 2020, 11:44: Vacuum to 200mTorr. Venting.
Monday, July 13, 2020, 11:55: Roughing. HS waterlines were opened. No visible leak detected.
Monday, July 13, 2020, 12:32: Venting. Vacuum to 175mTorr.
Monday, July 13, 2020, 12:34: Roughing.
Monday, July 13, 2020, 15:21: Turn off the roughing pump. Vent in the am & plan to remove the HS to leak check the HS & EVAP 2.
Tuesday, July 14, 2020, 07:42: Venting.
Tuesday, July 14, 2020, 08:23: Flexible line HS removed. U-Line installed. Roughing.
Tuesday, July 14, 2020, 08:54: Turbo pump on.
Tuesday, July 14, 2020, 11:15: Vacuum @ 3.14e-06T. Turbo & Roughing pump off.
Tuesday, July 14, 2020, 11:25:
HS leak checks:
0.0e-08 atm-cc/sec
0.0e-07 atm-cc/sec @ 75 PSI He w/ sniffer.
0.0e-07 atm-cc/sec @ 120 PSI He w/ sniffer. (Note HS is very dirty inside)
Tuesday, July 14, 2020, 11:35: Venting EVAP 2. He bottle connected on "Air-In" on the HS water supply line.
Tuesday, July 14, 2020, 13:50:
Pressurized the HS lines on EVAP 2 w/ 30 PSI He for 10 minutes. Remained @ 0.0e-07 atm-cc/sec.
Tuesday, July 14, 2020, 13:53: Roughing.
Tuesday, July 14, 2020, 17:33: Turbo pump on.
Wednesday, July 15, 2020, 10:31: Turbo pump off.
Wednesday, July 15, 2020, 12:02: HS Leak checked in the cold lab: 0.0e-07 atm-cc/sec @ 120 PSI He w/ sniffer.
Wednesday, July 15, 2020, 12:34: Venting.
Wednesday, July 15, 2020, 13:37: Installed flex-line HS. Pressurized the HS lines on EVAP 2 w/ 30 PSI He for 10 minutes. Remained @ 0.0e-07 atm-cc/sec.
Wednesday, July 15, 2020, 13:42: Roughing.
Wednesday, July 15, 2020, 14:16: Turbo pump on.
Wednesday, July 15, 2020, 15:59: Vacuum @ 3.85e-06T
Wednesday, July 15, 2020, 16:00: Waterline opened. No immediate response on Vacuum.
Wednesday, July 15, 2020, 16:03: Vacuum @ 3.69e-06T and continuing to drop. |