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Message ID: 349     Entry time: Wednesday, December 04, 2013, 09:22
Author: Anders Mjos 
Target/No.#:  
Source:  
Station:  
Module:  
Target Oven W.O#:  
Heat Shield W.O#:  
Status: In progress 
Subject: Testing impedance with the new TBHT P/S 

Wednesday, December 04, 2013, 09:21 : Turbos stopped. Vacuum at  1.2E-7 Torr

Wednesday, December 04, 2013, 12:35: Venting

Copper bars installed w/ 130 in lbs torque

Wednesday, December 04, 2013, 13:06: Roughing

Wednesday, December 04, 2013, 15:16: Turbos started. Vacuum at 0.03 Torr

Wednesday, December 04, 2013, 15:23: Turbos at speed.

Wednesday, December 04, 2013, 15:26: Vacuum at  5E-6 Torr


Thursday, December 05, 2013

Impedance measured on TGHT and TBHT (~2.5 mOhm and ~2.0 mOhm). Readback on TBHT gives an impedance of ~2.5 mOhm. This is higher than the previous test. Local current on TBHT shows 60A more than the readback at 300A.  The vacuum did not come down as low as usual, which likely means there is a leak.

Thursday, December 05, 2013, 13:15: Turbos stopped.


Friday, December 06, 2013, 13:11: Venting

Gaskets on doors cleaned.

Friday, December 06, 2013, 13:40: Roughing

Friday, December 06, 2013, 13:59: Starting turbos

Friday, December 06, 2013, 14:07: Turbos at speed.

Friday, December 06, 2013, 14:09: Vacuum at 1.4 E-5 Torr


Monday, December 09, 2013, 08:46: Vacuum at 2.0 E-5 Torr 

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