 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. |
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Thursday, February 21, 2019, 15:10, Isaac Earle, Safe Module Parking, Development, , , Seismic requirements for SMP
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Dragan Mitrovic, TRIUMF structural engineer, was consulted earlier this week regarding seismic requirements for the SMP assembly. Installation
location, overall dimensions, total weight, and the center of mass for assembly IRH1670 were provided to him by e-mail. On Feb 20th he communicated
verbally that he had analyzed the assembly for seismic loads, and concluded that this equipment does not require anchoring or any other form of seismic |
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, 08:42, Anders Mjos, Conditioning Station, Standard Operation, TM2, , Conditioning TM2 without source tray
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BIAS and EZL connected. No water flowing into the module (water looped on top of module)
Friday, March 01, 2019, 08:20: 10kV
Friday, March 01, 2019, 08:40: 20kV |
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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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Friday, March 01, 2019, 10:23, Travis Cave, Spent Target Vault, Standard Operation, , , Source tray moved
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The old TM#2 source tray and TM#4 optics tray have been removed from the vault and placed into the spent target storage on tray 9 which is meant
for source trays. |
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Tuesday, March 05, 2019, 07:20, David Wang, Conditioning Station, Repair, TM2, , TM2 HV test at TCS
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Spark between HV cover vertical mesh plate and HS 60KV bias connecting clamp 90degree angle at 55 KV on TM2 top. HV cover is removed to test above
55KV. The spark triggered TH and SHC ventilation secondary alarm. |
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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, 09:12, David Wang, Conditioning Station, Standard Operation, TM2, , TM2 move from TCS to SHC.
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| TM2 has been moved from TCS to SHC. The move is smooth. |
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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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Monday, March 18, 2019, 07:23, David Wang, Conditioning Station, Repair, TM2, , TM2 window line helium test
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New seals with a blank off cap are installed on TM2 window line water block. The seals are checked at TCS with 70 psi helium for 5 minutes
with LD at 0.0xE-9atm/cc.sec. No response on LD during test. Seals are good. |
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