 Thursday, August 29, 2013, 10:09, Bevan Moss, South Hot-Cell, Repair, TM3, , Heat Shield Circuit Leak
|
chad fisher wrote:
The heat shield circuit was pressurized with air (15-20 psi) and snoop applied to the water block joint |
Thursday, August 29, 2013, 12:03, Grant Minor, South Hot-Cell, Repair, TM3, no target, Heat Shield Circuit Leak 
|
Bevan Moss wrote:
|
 Thursday, August 29, 2013, 17:16, Bevan Moss, South Hot-Cell, Repair, TM3, N/A, Heat Shield Repair
|
Today Chad entered the south hot cell on work permit 2013-08-29-3 to repair the leaking heat shield line. The heat shield line was removed from
the module and the surfaces cleaned. New C seals and spring were inserted and the line re-attached. During this time Chad also installed the new vacuum
gauge. Grant took video of this work and Keith some pictures. The video and pictures can be found on the M: drive (groups) in the RH folder. The total |
|
Friday, August 30, 2013, 10:27, Bevan Moss, South Hot-Cell, Repair, TM3, N/A, Heat Shield Repair
|
Bevan Moss wrote:
Today Chad entered the south hot cell on work permit 2013-08-29-3 to repair the leaking heat shield |
|
Friday, August 30, 2013, 14:55, Bevan Moss, South Hot-Cell, Repair, TM3, N/A, Heat Shield Repair
|
Bevan Moss wrote:
|
|
Wednesday, September 04, 2013, 12:21, Bevan Moss, South Hot-Cell, Repair, TM3, , Ante-room work
|
September 3rd
David Wang and myself lowered the leak testing cart into the Ante room and prepared the ante-room for the leak testing of TM3s line. David and
Grant then entered the anteroom and inspected the old c-seal and leak tested the the heat shield line. The line pumped down to the lower limits of the |
|
Wednesday, September 04, 2013, 18:53, Grant Minor, South Hot-Cell, Repair, TM3, , Maico's measurements of new c-seals and bench-tested c-seals
|
Today Maico measured the thickness of three indium-plated inconel c-seals, presumably Ultra-Seal P/N 50606. These seals had NOT been in the Hot
Cell.
|
|
Wednesday, September 04, 2013, 19:01, Grant Minor, South Hot-Cell, Repair, TM3, , Inspection / Ante Room Leak Check Results on TM3 Heat Shield lines (3 Sept 2013)
|
Yesterday, Grant entered the Ante Room with David Wang to visually inspect the two sets of failed c-seals from the Heat Shield circuit, to remove the
second set from the Heat Shield water blocks, and to leak check the heat shield circuit with o-rings and a water-block-to-leak-detector fitting.
Some photos of the inspected seals are in the attached design review presentation. Some unusual marks were observed on both sets of failed |
|
Friday, September 06, 2013, 16:41, Bevan Moss, South Hot-Cell, Development, TM3, , C-Seal crush investigation 6x
|
Today Maico completed the new leak testing tool and blank off. He tested them with C-seals without springs and all was leak tight. He then inspected
the crushed seals and noticed that there was an area that was crushed less on both seals (more prominent in one, 20130906_tm3sourtrayefurb_P1020975)
and that this reduced crushed zone only appears on one side of the seal. This is similar to the failure seen on both sets of the heat shield lines. On |
|
Friday, September 06, 2013, 17:50, Grant Minor, South Hot-Cell, Development, TM3, , C-Seal crush investigation
|
Bevan Moss wrote:
Today Maico completed the new leak testing tool and blank off. He tested them with C-seals without springs and |
|
Tuesday, September 10, 2013, 12:11, Isaac Earle, South Hot-Cell, Repair, TM3, , Module side heat shield water block polishing and blank-off installation
|
The sealing surfaces of the module side heat shield water block were polished on September 9th in the morning using Chad's polishing tool with
the following attachments:
- Scotchbrite pads (30 seconds) (after this step indium material from the previous seal was no longer visible on the sealing surface) |
|
Wednesday, September 11, 2013, 15:37, Bevan Moss, South Hot-Cell, Repair, TM3, , C-Seal leak checking and repair
|
This e-log is to cover the work completed from September 9th until the 11th.
September 9th
Today Maico completed the leak checking blank off and leak checking tool (to replace the one that was contaminated). This tool was then leak checked |
|
Thursday, September 12, 2013, 10:35, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#29, Electrical check
|
| TM#4 with SiC#29 post beam electrical check in the south hot cell see PDF for details. |
|
Friday, September 13, 2013, 08:05, David Wang, South Hot-Cell, Repair, TM4, , TM4 coil 1 leak check in SHC
|
Leak checked TM4 coil1 in SHC with Isaac . The leak detector only can pump down to 1.5xE-7 atm.cc/sec. The leak detector got the response once the helium
valve is open, not even close to the leak area. The leak detector got a very big response when the helium probe was put close to the coil terminal block
on target front side and spray helium for 2 clicks. The leak detector got a small response when the probe was put close to water block area and spray |
|
Tuesday, September 17, 2013, 14:36, Bevan Moss, South Hot-Cell, Standard Operation, TM3, , Containment Box has been removed
|
| The containment box has been removed. Tomorrow the wiring harness will be installed. |
|
Thursday, September 19, 2013, 09:08, Travis Cave, South Hot-Cell, Standard Operation, TM3, no target, wiring harness
|
The wiring harness for TM#3 was made and a continuity and megger test was done on it and it passed, it has since been installed into the hot cell and
placed on the module. |
|
Thursday, September 19, 2013, 11:09, Travis Cave, South Hot-Cell, Maintenance, TM3, no target, Electrical check
|
Electrical check of TM#3 with no target was performed and it failed. There is a 135M Ohm short
between the coils and a 165M Ohm short between the coil and 60kV common. All other circuits passed they were infinite in value. |
|
Thursday, September 19, 2013, 15:56, Bevan Moss, South Hot-Cell, Repair, TM3, , Activities for September 18th and 19th
|
September 18th
The wiring harness was completed by Maico and Travis today (see pics) and was installed into the target module. During installation the bracket
went on with ease. The junction box appeared to be hung up on something but did engage eventually. The plug for the collimator is not quite long enough |
|
Monday, September 23, 2013, 13:55, David Wang, South Hot-Cell, Standard Operation, TM3, , window circuit leak check
|
This morning, Bevan and I leak checked window circuit on TM3 at SHC after containment box was installed. It took about 20minutes to pump down the circuit
to 0.0xE-9atm.cc/sec. Bevan sprayed helium on both VCR joints and a final splash. No response had been found on leak detector. |
|
Monday, September 23, 2013, 16:10, Bevan Moss, South Hot-Cell, Repair, TM3, , Activities Sept 20 - 23 2013
|
September 20th
Today was a trying day. When attempting to make the water line connections for the window the VCR seal fell off several times. Each time this
happens the seal becomes stuck at the bottom of the containment box. While trying to replace the seal the nut slipped down the line to the bottom of |
|