 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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Wednesday, May 24, 2023, 08:34, David Wang, Conditioning Station, Standard Operation, TM2, TiC#6, TM2 HS line helium pressure check and gasline fittins leak check.
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TM2 HS line helium leak check is done. leak detector base LR 1.8xE-8atm.cc/sec. helium pressure 70 psi. 5 minutes test. no change on LD leak rate.
I spray lots helium to gas line adaptor and fittings. No leak.has been found at this base leak rate level. Since the TCS MP1 has some
issue ,this time the base leak rate on LD only can get to 1.8Xe-8 atm.cc/sec at this moment instead of 0.0xE-9. The low E-8 level is not perfect, |
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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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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. |
Tuesday, August 08, 2023, 12:59, David Wang, ITW, Standard Operation, TM2, SiC #6, TM2 SiC#6 dhas been disconnected in ITW 
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| TM2 SiC#6 has been disconnected in ITW. See check list |
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Tuesday, August 08, 2023, 13:01, David Wang, North Hot-Cell, Standard Operation, TM2, TiC#6, TM2 TiC#6 post run electrical check at NHC.
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| TM2 TiC#6 post run electrical check has been done at TCS. See attachment |
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Wednesday, August 09, 2023, 09:41, David Wang, North Hot-Cell, Standard Operation, TM2, Nb#10, TM2 Nb# 10 electrical and leak check at NHC
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| Nb#10 has been installed on TM2 . electrical and leak check on HS line are good. See attachment. |
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Wednesday, August 09, 2023, 13:13, David Wang, Conditioning Station, Standard Operation, TM2, Nb#10, Tm2 Nb#10 has been connect at TCS.
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TM2 Nb#10 has been connect at TCS. TCS water system and vacuum system have been started. Everything looks ok so far. TCS Faraday cage is secured for
TM2 conditioning at TCS. |
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Friday, October 13, 2023, 11:46, David Wang, Cooling, Maintenance, , , HALCW system O2 sensor service and calibration.
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HALCW system O2 sensor service and calibration were done in Sep 26th. electrolyte and membrane on rose mount sensor 499ADO were refilled and replaced.
Sensor was zero and full scale calibrated. The sensor works fine after the job. |
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Friday, October 13, 2023, 11:51, David Wang, ITE/ITW, Maintenance, , , ITH:MP1 is replaced due to its poor performance.
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ITH:MP1 is replaced this morning due to its poor performance started yesterday afternoon. The general field in pit is about 260usv/hr. the contact field
on pump is 2.0 msv/hr. New pump works good. Lubricant in pump will be drained next week. then motor will be removed. The pump body will be bagged and stored
in silo area. |
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Wednesday, January 03, 2024, 13:55, David Wang, ITW, Standard Operation, TM2, Ta#66, Disconnect TM2 in ITW.
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| TM2 has been disconnected in ITW. All water lines are nitrogen purged. Filled 60 psi argon to all Tm2 water lines for module storage in winter shut down. |
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Wednesday, January 03, 2024, 14:03, David Wang, ITW, Standard Operation, TM2, Ta#66, ITW primary and secondary vacuum vessel leak check and TM2 water lines helium pressure test.
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ITW primary and secondary vacuum vessel leak check and TM2 water lines helium pressure test are done today. No major concern. see attachment for small
air to vacuum leak we found. TM2 water lines helium pressure test is fine. HS and window line leak rate are 1.4Xe-8 atm.cc/sec. all other
water lines are below 3.0XE-9atm.cc/sec. |
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Thursday, January 11, 2024, 13:54, David Wang, Conditioning Station, Development, TM3, , TM3 servic cap air to vacumm seals leak check.
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After Tm3 service tray and service cap installation, TM3 service cap air to vacuum seals leak check has been done at TCS. TCS:IG1 and IG1S are at low
E-7 torr range. leak detector base 0.0XE-9 atm.cc/sec, base pressure0.0X E-4 torr. I sprayed helium to all new air to vacuum seals
on service cap. No leak on seals. The leak check has been repeated 2 times with same result. |
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Thursday, January 11, 2024, 13:57, David Wang, ITW, Standard Operation, , , ITW entrance module has been disconnect.
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| ITW entrance module has been disconnected per document190510. It will be moved to SHC for diagnostic group tomorrow. |
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Friday, January 12, 2024, 10:53, David Wang, South Hot-Cell, Standard Operation, , , ITW entrance module has been moved from ITW to SHC.
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ITW entrance module has been moved from ITW to SHC. The move is smooth. I cleaned entrance module tank flange and o r-ing slot. entrance
module tank flange o ring is replaced . |
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Friday, January 12, 2024, 11:25, David Wang, South Hot-Cell, Standard Operation, TM2, Ta#66, Ta#66 post operation electrical check at SHC
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| Ta#66 post operation electrical check was done at SHC this Monday. See attachment. |
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Monday, January 22, 2024, 09:50, David Wang, ITW, Standard Operation, , , ITW entrance module has been moved from SHC to ITW.
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ITW entrance module has been moved from SHC to ITW. A slightly bump on module shielding block bottom side corner to tank vessel side when lowed module
into tank. No big concern on this slight bumping. Otherwise the move is perfect.
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