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Message ID: 441     Entry time: Wednesday, September 04, 2013, 12:21
Author: Bevan Moss 
Category: South Hot-Cell 
Type: Repair 
Module: TM3 
Target/Number:  
Subject: Ante-room work 

 September 3rd

David Wang and myself lowered the leak testing cart into the Ante room and prepared the ante-room for the leak testing of TM3s line. David and Grant then entered the anteroom and inspected the old c-seal and leak tested the the heat shield line. The line pumped down to the lower limits of the leak detector and there was no response from the cart. A presentation with the results of the C-seal inspection results was completed by Grant Minor and email for a design review held on the 4th.

September 4th

David Wang and myself removed the leak detector and surveyed the anteroom and cart. The following results were found with the high spec gamma detector.

Leak Detector body and cart 0 

Leak Detector wheels 200 cpm

Floor off of plastic 300 cpm (there was contamination before)

Plastic in front of HC opening 2000 cpm

Working table after plastic was removed < 50 cpm

Tool box < 50 cpm

First tacky mat 2500 cpm

Second tacky mat 200 cpm

outside of door tacky mats 0 cpm

David then laid fresh plastic on the floor around the HC opening and covered the exposed floor as well.

Following this Travis and David measured the lengths of the wiring and attempted to separate the wiring harness from the Ultem block. It was found that the block was pinned and could not be separated, a new block will need to be made. The measured the following lengths:

Steerering - 26" to 27"

Collimator - 32" - 33"

PNG - 60"

 

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