Heat Shield Test (OR Cleaned).
For all 6 tests:
-Start Turbo pumps & Ion gauge as soon as available on ISAC TEST STAND VACUUM Screen.
-Start Roughing by 10:10am +/- 1 minute and ensure previous HS started venting by 9:15am to meet timeline.
HS# 41751-5 . OR only. TGHT only.
No insulators, bracket, or gripper arms. Blank/Plate. No source cup.
Wednesday, August 17, 2016, 09:45: 41751-4 removed from test stand. Exchange target & End plates to 41751-5
Wednesday, August 17, 2016, 10:08: 41751-5 placed into test stand. Door open for 22 minutes.
Wednesday, August 17, 2016, 10:10: Roughing.
Wednesday, August 17, 2016, 10:10: Doors sealed for roughing.
Wednesday, August 17, 2016, 10:18: BV1B OPEN. Opened @ 136T.
Wednesday, August 17, 2016, 10:41: Both Turbo pumps started.
Wednesday, August 17, 2016, 10:46: Ion gauge on. TP1B @ speed 42 KRPM.
Wednesday, August 17, 2016, 10:50: TP1A @ speed 38 KRPM.
Wednesday, August 17, 2016, 11:47: RGA on. Vacuum @ 3.65E-6T.
Thursday, August 18, 2016, 08:19: Water lines opened. No response on RGA. Vacuum stable @ 2.53E-7T.
Thursday, August 18, 2016, 08:22: Power/sources on.
Thursday, August 18, 2016, 08:30: TGHT auto-ramping to 580A @ 2A/min. Vacuum stable @ 2.45E-7T.
Thursday, August 18, 2016, 11:39: Screen shots and check made @ 380-381A.
Thursday, August 18, 2016, 13:20: TGHT @ 580A. Vacuum @4.21E-7T.
Friday, August 19, 2016, 08:30: Auto-cooling started @ 2A/min. Vacuum @ 3.88E-7T
Friday, August 19, 2016, 13:20: Cooling Complete. Vacuum @ 2.25E-7T.
Friday, August 19, 2016, 13:42: Water lines purged. Power/sources off.
Monday, August 22, 2016, 08:17: Vacuum @ 1.37E-7T. RGA off. Ion gauge off. Turbos off.
Monday, August 22, 2016, 09:16: Venting.
Flat Head screw on bottom end plate stripped. Warping found on cup Blank/plate. Discoloration noted on heat shield |