 Wednesday, April 26, 2017, 13:35, chad fisher, South Hot-Cell, Repair, TM3, , TM3 containment box removed
|
| the containment box has been removed from TM3. |
 Wednesday, April 26, 2017, 16:52, Aurelia Laxdal, South Hot-Cell, Repair, TM3, , TM3 Lower Service Tray Video Inspection 
|
chad fisher wrote:
A video inspection of the lower service tray was performed this morning. Camera was inserted upwards |
|
Thursday, April 27, 2017, 16:58, Isaac Earle, North Hot-Cell, Development, , , Right side NHC manipulator installed
|
Installation of the NHC right side manipulator was completed yesterday. The three piece manipulator was assembled in the module assembly
area on the manipulator cart which was then craned through the hatch to the NHC service area (the slave end had to be removed for it to fit through the
hatch). The installation went relatively smoothly except for the second (cold side) piece of lead shielding around the thru tube which would not |
|
Friday, April 28, 2017, 12:04, Anders Mjos, Conditioning Station, Maintenance, , , MP1 problem
|
TCS:MP1 was tripping of intermittently yesterday. It was found by Dave Morris that the current sensor was not set correctly causing the pump on status
to flicker at times. Dave adjusted the settings yesterday. The system should be operational and is currently running normally. |
|
Monday, May 01, 2017, 08:53, chad fisher, South Hot-Cell, Repair, TM3, , Fiberglass removal
|
| Fiberglass, capton tape and tie straps have been removed from TM3. |
|
Monday, May 01, 2017, 12:32, David Wang, Crane, Repair, , , TH crane burning smell
|
TH crane burning smell showed again this morning. It appeared after 1-1.5 hours of continuously using during the F308 flasks moving in TH.After a certain
time of using I think the brake gap is reduced because of thermal expansion. The main hoist and brakes work fine still. We knew these brakes gap
are tight especially on west side. So, It is not surprised that this burning smell appeared again. It does not affect the safe of crane use in my view. |
|
Monday, May 01, 2017, 13:11, David Wang, South Hot-Cell, Repair, TM3, , Electrical Check on TM3 after fibergalss is moved in SHC.
|
RU( coil 1), F (anode), and 60kv bias(HS, Gasline, and MSP) are shorted together. Other lines are good. They are measured between individual
line each other @500V. The megga showed OL. All of them to ground are OL @500V as well. EL is grounded during check. |
|
Tuesday, May 02, 2017, 09:48, Isaac Earle, North Hot-Cell, Development, , , NHC polycarbonate window cover panel installed
|
The window cover panel has been installed on the hot side of the NHC shielding window according to drawing IRH1638. It was necessary to drill
and tap a hole in the steel frame first to achieve proper grounding for stud welding. The strength of all studs were checked by installing a nut
on the stud tightened against a block up against the steel frame, which was then torqued to a minimum of 10 ft*lbs. For the final installation the |
|
Tuesday, May 02, 2017, 13:49, Travis Cave, Spent Target Vault, Standard Operation, , , Spent Targets moved
|
Five spent targets have been moved from the target storage vault to the mini vault in preparation for Thursdays loading of the F-308s. See attached for
the list of targets in the mini vault, and the new status of the storage vault. |
|
Thursday, May 04, 2017, 14:06, David Wang, Conditioning Station, Repair, TM3, , A vacuum to air leak on TM3 service cap round side panel was found and fixed..
|
During TM3 roughing down yesterday afternoon,The vacuum gauges CG1 and CG1S stopped at 1.20 torr and refused to drop down. Leak detector was used to
found where the problem was. LD was in rough detecting mode and showed 2.7xE-6 atm.cc/sec as base leak rate. Spray medium amount of helium to TM3
service top, and found this leak was on round panel of TM3 side wall. LR climbed to E-4 atm.cc/sec range on helium spraying. In my vie,One 10# socket head |
|
Friday, May 05, 2017, 11:06, David Wang, Crane, Standard Operation, TM3, , TH crane is used for 5 shielding blocks transferring.
|
TH crane is used for transferring five shielding blocks(30000lbs) today. All brakes work fine. Mostly, I do not need crane slow up motion for
this job so during 1 hour moving, no rattle sound and burning smell has been found. I think TH crane is good to use as we decided. |
|
Friday, May 05, 2017, 11:53, David Wang, Conditioning Station, Repair, TM3, , sparking on TM3 serice cap top.
|
Sparking was found this morning inside HV cover on TCS in TH while TM3 was HV conditioning at TCS. The TCS bias was set to 50KV when I found this spark.
It sparks between HV cover front side wall to a KF 25 clamp on HS water terminal. The KF 25clamp is used in this situation on HS water line top because
the HS line is opened inside module, and we need a vacuum seal on the top of this line. Actually, The clap is much smaller than the corona ring on |
|
Monday, May 08, 2017, 09:49, David Wang, Conditioning Station, Standard Operation, , , TH schedule 132 update weekly
|
| Update TH schedule weekly to show the job process. |
|
Monday, May 08, 2017, 14:46, Travis Cave, Spent Target Vault, Maintenance, , , Mini Vault Door
|
Mini Vault Door as some difficulty over coming a small hump on its track. To open the door one needs to give the door a slight tug while
it is opening to over come this hump. |
|
Tuesday, May 09, 2017, 07:00, David Wang, Conditioning Station, Repair, TM3, , Follow up Aurelia's entry, TM3 and TCS current limits investigation.
|
Aurelia and I investigated this current limit issue May 8th. First, By separating TM3 from TCS. we found the problem is on TCS side. We did a Megga
test on TM3 as well. TM3 is good at 1KV megga test. After that, The insulators between TCS to ground is test. they are good which could hold 1G ohm at
1000V megga test. So the problem should be on power supply side including power supply itself ,cables and transformer. Later, Tom and John found |
|
Tuesday, May 09, 2017, 12:45, David Wang, Conditioning Station, Repair, TM3, , TM3 service tray side panel is cleaned and installed back to TM3
|
TM3 service tray side panel is cleaned and installed back to TM3 this morning. I visually inspected service tray insulators. Nothing is changed comparing
to inspection before.Nine screws are installed on panel to hold it onto TM3. |
|
Wednesday, May 10, 2017, 13:42, Anders Mjos, Conditioning Station, Repair, , , Leaky gauge at TCS:TS2 (e-fault: 9609)
|
| Neil Wong will fix this leak tomorrow Friday. See attached schematics for location. |
|
Thursday, May 11, 2017, 16:10, Isaac Earle, North Hot-Cell, Development, , , NHC roof block to TH north wall gap sealed
|
The gap between the north face of the NHC roof block and the target hall north wall in the area where the NHC inlet ducting will be installed has
been sealed with Sikaflex 1a flexible polyurethane sealant applied over foam backer-rod. |
|
Friday, May 12, 2017, 07:42, David Wang, Crane, Repair, , , TH crane burning smell, smoke, and big noise on east side main hoist brake assembly.
|
This morning, when I prepare for today's crane check, The crane made a very strong noise without any load during the full speed up motion. I stopped
the crane right away, and noticed that east side of main hoist motor area was smoking . The crane was moved to east end. And, I climbed up to the top,
and found the smoke is coming form brake side, and should be produced by braking. The smell is same as before.Unless other thing is wrong, I think |
|
Wednesday, May 17, 2017, 08:31, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check on TM4 HS line at SHC
|
Chad and I finished leak check on HS line with UCx target installed on it. Base Leak rate:0.0X 10^-9 atm.cc/sec, Base pressure 0.0X 10 ^-4 torr.
Sprayed helium to VCR joints. No leak has been found . The line will be pressurized with helium at TCS.
Helium pressure test on TM4 HS line is done at TCS. BLR 0.0XE-9 atm.cc/sec. 70psi helium , 2 minutes. No response. The line is leak free. |
|