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Message ID: 416     Entry time: Thursday, December 18, 2014, 16:38
Author: Anders Mjos 
Target/No.#:  
Source:  
Station:  
Module:  
Target Oven W.O#:  
Heat Shield W.O#:  
Status: Problems/Solutions 
Subject: Leak found on service cap F/T Q 9 pin connector 

Largest response on the bottom of the insulator.

Thursday, December 18, 2014, 16:39: Closing pumping valves. Will allow system to leak up over night


Friday, December 19, 2014, 08:19: Venting

Friday, December 19, 2014, 11:55: F/T and insulator removed. Lid not yet installed. Spark marks found on the insulator (see attached photo).


Installed blank off on F/T Q. New o-ring (1-1/02235) and screws 10-24x0.50 (1-2/02526). F/T insulator reference ITA0439

Monday, December 22, 2014, 09:54: Roughing

Monday, December 22, 2014, 10:25 : 0.5 T at CG1

Monday, December 22, 2014, 11:00: No leak detected at 0.2 T

Monday, December 22, 2014, 11:01: Starting turbos

Monday, December 22, 2014, 11:02: Opened water flow on GE (and TP1B)

Monday, December 22, 2014, 11:03: Some noise from TP1B around 12 kRPM

Monday, December 22, 2014, 11:07: TP1B at speed

Monday, December 22, 2014, 11:10: TP1A timed out restarted. Bypass BV1A required.

Monday, December 22, 2014, 11:11: Turbos at speed.

Monday, December 22, 2014, 11:11: Vacuum at 2.6 E-5 T


Tuesday, December 23, 2014, 08:27 : Vacuum at 1.8E-6 T

Tuesday, December 23, 2014, 08:51: Opened water. Vacuum stable at 1.7E-6 T

Tuesday, December 23, 2014, 09:05: No leaks found with leak detector. Base leak rate <7.7E-8 mbar-l / s


Monday, January 05, 2015, 09:28: Repeated leak check. Both doors. Sprayed He through service cap cover. No response above 2.4E-8 mbar-l/s base leak rate.

Attachment 1: Spark_marks_on_insulator.jpg  1.878 MB  Uploaded Monday, December 22, 2014, 11:39  | Show | Show all
Attachment 2: Spark_marks_on_insulator2.jpg  1.314 MB  Uploaded Monday, December 22, 2014, 11:39  | Show | Show all
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