 Wednesday, March 01, 2023, 10:01, David Wang, ITE/ITW, Development, , , vacuum pit ventilation upgrade.
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vacuum pit ventilation upgrade was done last week. The jobs include: installed two industrial cooling fans. One is placed in pit on resin
tan cover. Other one is placed on and opening to pit by shielding blocks. They are installed for better air circulation in pit. Also, 2x two
small 20W cooling fans are installed on ITH MP1 and MP1S to low the pump operation temperature. The result is positive. The ventilation status |
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Wednesday, March 08, 2023, 06:32, David Wang, Cooling, Maintenance, , , HALCW flow sensors replacement.
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HALCW flow sensors replacement job is done. All ITE/ITW(except ITE HS) return line water flow sensors including paddle wheels and coils are replaced.
After job, water interlock signal have been checked in electrical room . Everything works fine. Visually inspections for possible water leak on HCLCW
system have been done as well. one valve on ITE dump return line has a very small water seeping through valve stem. I will watch on it. Other than |
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Wednesday, March 08, 2023, 09:19, David Wang, Cooling, Standard Operation, , , HALCW ITC:MP1/MP2 motor phase current measurement.
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HALCW ITC:MP1/MP2 motor phase current measurement is done by Joel from electrician group. MP1:17.1A/17.2A/16.7A. MP2: 17.9A/17.9A/17.3A.
19.5A is manufacturer notified on full load phase current.on operating instruction manual. |
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Wednesday, March 08, 2023, 13:57, David Wang, Cooling, Standard Operation, , , HALCW ITC:MP1/MP2 pump and motor temerature measurements
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HALCW ITC:MP1/MP2 pump and motor temperature measurements result:
MP1: pump discharging port: 78F, motor rear bearing house:72F , Motor housing 140F(60C). 6F difference between them is less than
15F manufacturer clarified up limit in instruction manual. |
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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, 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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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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