 Wednesday, February 20, 2019, 09:07, chad fisher, South Hot-Cell, Repair, TM2, , Module side waterblock jig
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| I have installed the module side water block jig. |
Friday, February 22, 2019, 10:31, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Source tray removal 6x
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| The source tray has been removed from TM2. |
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Monday, February 25, 2019, 09:44, chad fisher, South Hot-Cell, Repair, TM2, , Water block jig
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| module side water block jig has been removed in preparation for electrical checks. |
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Tuesday, February 26, 2019, 08:51, chad fisher, South Hot-Cell, Repair, TM2, , TM2 containment box
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| The containment box has been reinstalled onto TM2 in prepatation for testing in the conditioning station. |
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Friday, March 01, 2019, 09:57, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Source tray removal
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TM4 optics tray was installed onto the old TM2 source tray yesterday and tray filled with non-active metal scrap. Tray inserted into transfer frame 95%
yesterday. During insertion the ball nut of the transfer jig became unfastened from its drive plate. This will have to be fixed before the jig can be used
reliably again however we were able to finish the job...the transfer jig is 20 years old now so it is not entirely suprising that it needs some attention. |
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Tuesday, March 05, 2019, 09:38, chad fisher, South Hot-Cell, Repair, , , Transfer Fixture Repair
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Transfer fixture has been remotely disassembled to the point where the ball nut lock plate assembly can be inserted into the tool port and the plate
replaced by hand in the tool port without having to enter the hot cell. Straight head screws will be replaced with SHCS to facilitate easier re-assembly
and future disassembly. |
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Tuesday, March 05, 2019, 14:29, chad fisher, South Hot-Cell, Repair, , , Tray Transfer Fixture Repair Complete
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Repair of the tray transfer fixture is complete (minus testing).
A distorted ball nut lock plate was replaced and thread loc added. to the ball nut/plate assembly. Testing will take place tomorrow once the thread
lock has a chance to cure. |
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Thursday, March 07, 2019, 12:02, chad fisher, South Hot-Cell, Repair, TM2, , Box Off water block jig on
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| The containment box has been removed from TM2 and the water block jig installed in preparation for water block polishing. |
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Thursday, March 07, 2019, 12:20, chad fisher, South Hot-Cell, Repair, TM2, , Pre-polishing pictures
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| Pictures of the water blocks before polishing can be found on docushare, collection 24400 |
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Thursday, March 07, 2019, 13:59, chad fisher, South Hot-Cell, Repair, TM2, , Polishing
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Polishing of the water block sealing surfaces has commenced. First attempt was on block B with low nap brown polishing pad (the least aggressive pad
prepared) and isopropyl for 30 seconds. This cleaned a little but did not remove the "ring" which I believe is water scale. I will step up to
2000 grit wet sand paper and iso next. |
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Friday, March 08, 2019, 14:10, chad fisher, South Hot-Cell, Repair, TM2, , Water block polishing
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After trials with 2000 grid wet paper I have moved up to "red" scotch brite. This seems to have worked the best so far although it took two
minutes to remove the ring that the other materials could not remove (see picture).
I have moved to next circuit. Currently at 3 minutes and 30 seconds with scotch brite but significant ring remains. |
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Monday, March 11, 2019, 14:34, chad fisher, South Hot-Cell, Repair, TM2, , Water Block Polishing status
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Stage 1 polishing (water scale and at least 99% of visual indium removed) has been achieved on all 2 seal water blocks that will be used (Ground electrode
has not been polished). Process required 3-4 3minute cycles of the tool using scotch brite pads with the tool running at approximately 75 psi. |
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Tuesday, March 12, 2019, 09:13, chad fisher, South Hot-Cell, Repair, TM2, , Water Block Polishing status
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Stage 1 polish has been achieved on all single seal water blocks using the single pad tool run at 75 psi, 2 3 minute cycles per block using red scotch
brite. |
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Thursday, March 14, 2019, 10:25, chad fisher, South Hot-Cell, Repair, TM2, , Water Block Polishing status
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Phase 2 (intermediate) and Phase 3 (Final) polishing is complete on all water blocks on TM2 (minus ground electrode circuit which has only had a cursory
cleaning). Phase 2 with 2000 grit wet sand paper and isopropynol for 1 minute with tool at 75 psi, Phase 3 with Veltex polishing cloth for 1 minute with
tool at 75 psi. |
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Thursday, March 21, 2019, 09:56, chad fisher, South Hot-Cell, Repair, TM2, , Tray insertion
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This morning new water block fasteners and gas line capture nut fasteners were inserted into the hot cell. Window waterline blank off was removed from
TM2, surfaces inspected and given a polish with Veltex (30 seconds, 70 psi) as there was a small bit of c seal residue. Transfer try with new source tray
has been latched to the module. |
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Friday, April 05, 2019, 13:44, chad fisher, Spent Target Vault, Development, , , 2019 Pail drop tests
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Drop test performed January 8, 2019 with 25 lb target, UN pail and lug cover. Drop failed. Lug cover half removed. Pictures and video in docushare
collection 24626.
Second test January8, 2019 UN pail, "new" dish cover, old lock lever ring, 25 lb target. Single drop from 1.2m
onto latch, no sealant. No leaks 24 hours later. Pictures in docushare collection 24626
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Friday, April 12, 2019, 11:44, chad fisher, South Hot-Cell, Standard Operation, , , Pail transfer
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Pail transfer was undertaken in the south hot cell. went very well except near the end the master tong cable of the right hand manipulator broke. Not
entirely a surprise due to the amount of use it has seen lately. |
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Wednesday, April 17, 2019, 12:03, chad fisher, South Hot-Cell, Repair, , , Manipulator repair
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| Broken handle cable of east manipulator has been replaced and manipulator is operational again. |
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Monday, April 29, 2019, 07:56, chad fisher, South Hot-Cell, Development, , , Pail transfers
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Two pail transfers took place April 25th.
Ta#47 transfered from pail 137 to pail 201. existing plastic bag from 137 showed many areas of typical age/rad damage related failure.
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Wednesday, May 01, 2019, 07:49, chad fisher, South Hot-Cell, Standard Operation, TM4, UC#26, UC#26 removal
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| UC#26 has been removed from TM4. |
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