 Monday, March 13, 2023, 11:25, Carla Babcock, ITE/ITW, Development, , , 10kOhm resistors installed in ITE/ITW faraday cages 
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On Sept. 14 2022, a 10kOhm 30W resistor was installed in each target station faraday cage, in line with the HV bias supply. This was an effort to reduce
the current draw from the BIAS supply and protect the power supply controls cards which have been repeatedly breaking due to HV sparks (we think). In the
end we still broke cards after the installation, so it doesn't seem to have helped. See below for details on the electrical side: |
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Thursday, March 30, 2023, 14:29, Frank Song, ITE/ITW, Development, , , Preparation of target stations for FEBIAD runs
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Helium cylinder and Argon cylinder are installed in both ITE/ITW faraday cages , regulator for outlet pressure are not set yet.
TO ITE : Argon bottle size 14"L x 4"D with SV2 connected at pressure 900 Psi ( 70 bar ) |
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Monday, April 03, 2023, 07:55, chad fisher, North Hot-Cell, Standard Operation, , , NHC, SHC field check
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NHC is 1.26 mSv/h inside approximately .5m from table surface, between manipulators
SHC 186 uSv/h inside approximately .5m from table surface and between manipulaotrs |
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Tuesday, April 11, 2023, 11:35, chad fisher, North Hot-Cell, Standard Operation, , , NHC fields post sample removal
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The fields in the NHC after removal of Ferran's graphite sample is 238 uSv/h. This again seems to emanate for the items in the 5 gal pail...the copper
tubing from the beam window or, as I mentioned in my previous elog, the peek samples. I did ask about removing these during the graphite sample removal
but was told they were not "hot". |
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Friday, April 14, 2023, 10:01, Adam Newsome, Assembly/Bench Test, Repair, , , Assaying Turntable Repair
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The spent target assaying turntable was repaired. It was tested today with a load exceeding the maximum it would need to handle during rotation (100
kg). It works as expected and is ready for operation. |
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Tuesday, April 18, 2023, 07:28, chad fisher, North Hot-Cell, Maintenance, , , NHC entry summary
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NHC was entered on April 17, 2023 for inspection and maintenance. Summary :
Compressible and non-compressible waste was loaded into a 55 gal drum and removed from the NHC. This same drum will be inserted into the SHC at
a later date to be sorted, compressible waste compressed, and drum filled more. |
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Monday, April 24, 2023, 10:18, David Wang, Cooling, Maintenance, , , HALCW flowmeter transmotters inspetion and calibration.
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ITW, ITE, ITW +ITE total , and low active cooling water return flow meter transmitters are inspected and calibrated. Result:
ITW , PX-750-06Di , Calibrated to 4-20 mA for 0 to 6" H2O DP, linear. Transmitter works fine.
ITE. PX-750-06Di, calibrated to 4- 20mA for 0 to 6" H2O DP, linear. Transmitter works fine. |
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Friday, April 28, 2023, 21:39, David Wang, Conditioning Station, Standard Operation, , , TCS cooling water system was started and tested this Wednesday
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TCS cooling water system was started and tested this Wednesday. Chiller compressor 2 and 3 was in operation cycle twice without issue. TCS:TK2 was refilled
to 28 inches. Water system works fine. system was switched off after test. |
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Tuesday, May 02, 2023, 17:18, David Wang, ITE, Standard Operation, , , ITE 4 turbopumps are started for preoperation check.
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ITE TP3,4, 1S,and 4S were started successfully this afternoon. All pump current draws were below 1.5A . IG1S was switched on. I have no local controller
so TP1 and TP2 on TM4 at MSP can not be checked. IG1S was hard to switch on at first. It timed out and showed error 09 code. I removed the
connector back cap, and it could be switched on after. I will look on this issue. |
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Wednesday, May 03, 2023, 11:04, Adam Newsome, Crane, Maintenance, , , Pail Handling Tool - Annual Inspection
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The pail handling tool which is used to move 5 gallon pails around the target hall was inspected by A. Newsome, N. Jorgenson, and E. Lahe. The main tool
as well as spare were checked for the following items. The tools are in good, working condition. It is noted that some fasteners on the hook assembly were
slightly loose, but have been tightened. |
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Wednesday, May 03, 2023, 13:22, David Wang, ITE, Standard Operation, , , Argon vented ITE station.
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| Argon vented ITE station. ITEVV1S and ITGT SV3 were closed after venting. |
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Thursday, May 04, 2023, 07:14, David Wang, Safe Module Parking, Standard Operation, TM4, , SMP vacuum pumpimg down is stopped.
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| SMP vacuum pumping down is stopped. SMP and TM4 venting to atmosphere will be started soon. |
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Friday, May 12, 2023, 09:56, Adam Newsome, Spent Target Vault, Standard Operation, , , Emergency Close Mechanism Test
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The emergency close mechanism for the Storage Vault door was tested by Travis Cave, Nadia
Jorgenson, Adam Newsome, and Jason Zhang. The door was opened to its fully open limit, then closed with the emergency system.
The test was successful. |
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Thursday, May 25, 2023, 13:10, David Wang, Conditioning Station, Maintenance, TM2, , TCS MP1 is replaced due to poor performace.
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TCS MP1 is replaced due to poor performance( system shows unstable and high reading on TCSCG1A and high TP1,TP2 current draw) . The pump is edward 15i
scroll pump. Since vacuum group has no same spare pump, i have to use SMP roughing pump SMP:MP1 which is a same pump to replace it.. After the replacement
,the TCS:CG1A and TP1, TP2 current draw are back to normal. The original TCSMP1 was surveyed. Swipes on intake and exhaust port are 300 counts and 1000counts. |
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Tuesday, May 30, 2023, 14:15, David Wang, ITW, Standard Operation, , , ITW water signal interlock check is done.
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ITW water signal interlock check is done. All ITW water signals including HS, EE, Coil , Ta, Tu, MSP, C-window, HVC1, HVC2, 2A-dump, 2A -shielding plug,
2A-tank, 2A-window, and 2A-collimator are checked. All water signal interlock work fine. |
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Tuesday, May 30, 2023, 14:19, David Wang, ITE/ITW, Standard Operation, , , BL2A MAA primary beam exclusion area ASU test.
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MAA ASU test have been done following document 154779. All three tests in document are passed. DCR Jas has all test documents.
This test includes the functional test on TH emergency roof hatch which is located at the west end of TH roof. The hatch could be opened and closed
properly from TH inside. |
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Tuesday, June 06, 2023, 15:10, Antoniette Yap, Spent Target Vault, Maintenance, , , Annual Inspection of Main and Mini Storage Vaults
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The annual inspection of the mini-storage vault and main storage vault was completed June 23, 2023. The following items were checked:
Cabling and cable management
Connectors
Controls box - internal wiring and components, functionality
Limit switches - functionality, wiring, mounting
Motor
Bearings
Set screws
Miscellaneous |
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Monday, June 12, 2023, 07:36, David Wang, Conditioning Station, Standard Operation, , , TCS water filters annual change.
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Plant group changed TCS water filters last Friday. 4 filters on resin can inet /outlet sides and filters(4 in one cartridge house)on pump return line
have been changed. Triumf maintenance tags on filters have been updated. No water leak after job. The TCS TK2 water level dropped from 20" to
16" because of the job. I will refill the level to 28" today. |
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Wednesday, June 14, 2023, 13:37, David Wang, ITE, Standard Operation, TM4, , ITE water signal interlock check
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ITE water signal interlock check including HS,EE, TA, TU, MSP. Coil1 , C-window ,2a-window, 2A tank, 2A shielding plug , 2A dump, 2A collimator
are done. All things work. |
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Tuesday, June 20, 2023, 12:37, Adam Newsome, Assembly/Bench Test, Development, , , Modifications to wire ropes for pails within existing F-308s 6x
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Based on a request from CNL (attached), modifications were made to the wire ropes protruding through the tops of F-308s to add a crimped loop which acts
as a lifting feature. Tests were performed (report attached) on 10 sample units to validate the strength of these loops, since each loop could not be tested
in-situ once the pails were already packed in F-308s. CNL has reviewed and approved the test report. |
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