 Thursday, August 02, 2018, 07:57, David Wang, Conditioning Station, Standard Operation, , , Leak check on TM2 UCx #23 @ TCS and SHC.
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I did a helium pressure test on TM2 HS line at TCS. At 70psi helium, the leak rate is 2.5 xE-7 atm.cc/sec. I think this is the number that close to result
before which is 1.7xE-9 atm.cc/sec. WE know there is a small leak on this water block seal. Chad and I did helium spray check yesterday at
SHC. It was good at bottom scale. No much worry on this low E-7 range leak. |
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Tuesday, August 07, 2018, 10:44, Travis Cave, South Hot-Cell, Maintenance, , , Entrance module move
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| The west entrance module has been moved from the west target station to the south hot cell, for a bellows replacement. |
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Thursday, August 30, 2018, 07:42, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 has been connected to TCS.
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| TM4 has been connected to TCS. vacuum system and water system are started. Everything looks fine. |
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Thursday, August 30, 2018, 07:46, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 HS line leak check at TCS and SHC.
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Chad and I leak checked TM4 HS line after UCx 24 is installed. No leak at 5xE-9atm.cc/sec. Today, I did helium pressure test on HS line at TCS.
No leak at 70 psi helium 0.0xE-9 atm.cc/sec. |
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Wednesday, September 12, 2018, 15:22, Isaac Earle, North Hot-Cell, Development, , , NHC air and gas supply lines - test and leak check
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Testing was completed today on the NHC air and gas supply lines. For each line a Staubli plug was installed on the fitting inside the hot cell,
the line was charged with compressed air (50psi for gas lines #1, #2, and #3; 100psi for the air lines #4 and #5). All connections inside and
outside the cell were checked for leaks using Snoop including connections for the solenoid valves. No leaks were found. Correct operation of |
Wednesday, September 12, 2018, 15:30, Isaac Earle, North Hot-Cell, Development, , , Installation of NHC operator-level lighting completed 
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Installation of of operator-level lighting in the NHC was completed today according to drawing IRH1801. 2" x 2" Panduit was mounted
to the wall on aluminum brackets to support the power cables. These lights can be replaced remotely by unplugging the power cords using the manipulators,
lifting the cable out of the Panduit with a hooked pole tool through the manipulator slave end removal roof hatch, lifting the light fixture off the support |
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Thursday, September 13, 2018, 16:57, Isaac Earle, North Hot-Cell, Development, , , NHC grounding and mili-ohm testing
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The following equipment has been connected to the building ground located in the Target Hall by the TCS using 1/2"
flat bonding strap:
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Tuesday, September 25, 2018, 07:54, David Wang, Conditioning Station, Repair, TM3, , TM3 is connected for HV test at TCS.
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| water loops are by passed on top. All bias, EE, and EL are tied together. Started water system. |
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Tuesday, September 25, 2018, 08:48, chad fisher, South Hot-Cell, Maintenance, , , Window leak and torque
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The south hot cell window has been found to be leaking oil. Upon inspection yesterday I found that the bolts compressing the gasket on the cold side
were "loose". I have re-torqued them to the specification provided by the manufacturer in the attached procedure. |
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Wednesday, September 26, 2018, 07:14, David Wang, Conditioning Station, Repair, TM3, , TM3 HV test at TCS.
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I did a HV test on TM3 at TCS yesterday. HV Ramp up speed: 1KV per 5 minutes when below 30KV,1KV per 10 minutes from 30-36KV. There is no major spark
below36 KV . I could see lots small and big vacuum response on IG1 and PNG2 when conditioning from 30-36 KV, especially when closing to 36
KV. However, At 36.4 KV, There is a big continuous spark occurred. It could not be stopped until I lowed the HV to 14KV. I have to ramp up from 14 |
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Tuesday, October 09, 2018, 12:32, David Wang, Conditioning Station, Repair, TM4, , TM4 steers 4 pin feedthrough CF flange
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TM4 Steers 4 pin feedthrough CF flange is replaced due an inside feed through insulator broken. CF 25 cooper seal is replaced with a new one as well.
Travis did anelectrical check. after replacement. Everything looks fine.
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Monday, October 22, 2018, 14:05, Travis Cave, ITW, Repair, , , Module move
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| ITW Exit #2 has been moved from the west station to the south hot cell for a bellows repair. |
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Tuesday, October 23, 2018, 10:53, chad fisher, South Hot-Cell, Repair, , , Exit 2 East
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Cover 1 was removed from the exit module. Confirmed with David that the actuator rod that needed to be disconnected was the far left )as viewed by the
hot cell operator). The fastener for this rod was un-accessible from this side. Cover 1 was re-installed (two bolts left loose) and cover 2 was removed.
fastener holding the actuator together was removed and luckily it does have a remote start. |
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Tuesday, October 23, 2018, 11:32, David Wang, South Hot-Cell, Maintenance, , , ITW RV4S leak check.
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| ITW RV4S (A and B) are leak checked. They are good. |
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Thursday, October 25, 2018, 11:03, chad fisher, South Hot-Cell, Repair, , , Exit 2 West 8x
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| Actuator arms, lemos, lemos and banana plug block have been disconnected in preparation for raising of the service tray. Aaron has pictures |
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Friday, October 26, 2018, 09:44, Travis Cave, Conditioning Station, Standard Operation, , , Exit Module moved
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| The west exit #2 module has been moved from the south hot cell to the conditioning station. |
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Monday, October 29, 2018, 10:43, David Wang, Conditioning Station, Repair, , , ITW exit 2 leak check at TCS.
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I did a leak check this morning on exit 2 module at TCS. LD base leak rate is 4.00XE-9atm.cc/sec, Base pressure is 0.00 X E-4 torr. All seals,
bellows, and flanges are checked. The new FC5 bellow is good. There is a big leak up to 2X E-6 atm.c/sec has been found on IG1S side panel . The panel
itself will be replaced this time. Machine shop is working on it.. Two small leaks in E-9 atm.cc/sec range have been found on the o-ring |
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Thursday, November 08, 2018, 09:27, chad fisher, South Hot-Cell, Maintenance, , , South East Manipulator cable replacement
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The handle cable on the east manipulator of the south hot cell has been replaced. Old cable showed signs of wear but had no broken strands. Manipulator
is back together but still needs to be re-tensioned. |
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Thursday, November 22, 2018, 14:38, Isaac Earle, North Hot-Cell, Development, , , NHC design approved by High Voltage Engineer
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To satisfy RS 101 from the NHC requirements specification (Document-131915) Tomislav Hurskovec was consulted regarding high voltage safety. After
a verbal discussion on various aspects of the NHC design he confirmed that the design satisfies high voltage safety concerns.
A copy of his confirmation e-mail is attached in PDF format. |
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Monday, November 26, 2018, 12:19, chad fisher, North Hot-Cell, Repair, , , East Manipulator
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In preparation for removing the slave for replacement I discovered that the timing screw in the handle cable drum (master side) had been left threaded
into the pulley...it should have been completely removed. It was bent from hitting on a casting inside the mater arm which most likely contributed to the
hopped pulleys on the slave side. After removing this timing screw I entered the north hot cell and replaced the hopped cable back onto its pulley and |
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