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Message ID: 359     Entry time: Thursday, January 23, 2025, 16:58
Author: Albert Kong 
Category: Maintenance 
Type: Other 
Specific: Cooling 
Subject: T1/T2 CUNO filter exchange, hansen fitting inspection, T2 FGSEC proteus electronics replaced, T2 FGSEC and Q1 paddle wheel replaced 

All CUNO filters at T1 was exchanged on Jan 17.

At the time, access to the CUNO filters at T2 was obstructed by a shielding block, we will exchange these filters once the block is moved.

All Hansen fittings on the target station were inspected, all o-rings found to be in good condition.

No leaks identified in system.

 

The noisy T2FGSEC proteus paddle wheel flow sensor electronics was replaced.

While exchanging the sensor board, we decided to compared the wear on the paddle wheels of this sensor and another sensor (Q1, << sees less flow rate than T2FGSEC).

We found that both paddle wheels had similar levels of wear and decided to exchange both while we had the sensors taken apart.

 

UPDATE JAN 24:

The two CUNO filters on the T2 cooling package was serviced, all 5 spent filters transfered to MH RH HC lab for temporary storage, kept in boot box area by the hot cell tool port (attached photo only shows 4, 5th spent filter underneath rest).

It was noticed that the -235 O-ring beside T2 pump was no longer circular, new maintenance item added to checklist for all CUNO O-rings to be replaced, will be done in coming shutdown.

Attachment 1: CUNO_Filter_Exchange_Jan_15_2025.pdf  1.198 MB  | Show | Hide all
Attachment 2: IMG_0991.MP4  5.227 MB
Attachment 3: IMG_0992.MP4  1.805 MB
Attachment 4: IMG_1053.JPEG  953 kB  Uploaded Friday, January 24, 2025, 14:33  | Show | Hide all
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