Tuesday, June 23, 2015, 14:19, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Water Block Jigs Removed
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Both halves of the water block jigs have been removed and the module is now ready for base vacuum leak and electrical checks.
During removal of the jigs the fiberglass that had been "shoved" by hand in between two of the lines in the early 2000's fell out again. |
Wednesday, June 24, 2015, 10:16, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Vacuum Leak Check
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The following circuits have been vacuum leak checked and have not registered any leaks:
Circuit D, C, B, A, Coil2, EE, Ground Electrode, Mounting Support plate, Coil 1.
Left are Heat Shield and Window circuits which will be checked after blank offs are installed on the vcr terminations. |
Monday, February 02, 2015, 14:06, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Tray build
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Master target jig installed to locate attachment bracket ITA3389 as well as conductor insulator block b (aluminum / for soldering version) and oven conductor blocks (ITD0353 and 03356).
There were NO ITA6145 fasteners or TGN0076 either. Standard 1/4-20 x 1" fasteners have been used in there place for now. Keith is following up with getting the missing fasteners into the shop.
Oven conductor blocks will have to be lapped before lines are attached as they both have dents on the high current mating surfaces.
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Thursday, January 08, 2015, 10:34, chad fisher, South Hot-Cell, Standard Operation, , , TM2 Tray Build Status and Problems
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Final assembly of the source tray for TM2 was started this morning.
Sliding tray was received from keensert installation and cleaned.
Mounting plate/ionizer tube location jig was rechecked against assembly ITA3136...Mounting plate was loosened, jigs for centering the ceramic shields installed and fasteners re-torqued to 57 in lbs.
Upon attempted assemble of ITA3536 and 3537 (support frames) it was noticed that the countersinks were not deep enough...the heads of the screws protrude and would interfere with/damage the support insulators. These items have been given to Dan to have the counterbores adjusted...drawing should be changed to insure a small gap.
Also, one of the support frames has marks on its side that may be a high voltage issue.
Upon inspection of the components in question (ITA3540 & 3538) it was found that they have been made to spec and model; however the spec& model does not allow for adequate theoretical clearance given tolerances. Countersinks will be adjusted and changes documented.
"Pitting" will attempt to be lapped.
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Monday, January 12, 2015, 14:29, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Tray Build Status
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Countersink problem with supports has been remedied. Scratches, dings, and pitting has been buffed out and supports re-cleaned and re-assembled.
Friedhelm was consulted regarding the appearance of fine scratches on the main stand-off insulators...the best two matching ones were chosen and assembly continued.
Alignment will start tomorrow.
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Thursday, January 29, 2015, 11:31, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Tray Build
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On Tuesday morning I attempted to complete assembly of the source tray for TM2 however discovered that 3 1/4-20 x 0.25 titanium helicoils had not been installed into the mounting plate as they should have been. Checked and asked around for them but to no avail. I have ordered some, they should have been here yesterday.
Also, I have noticed that the threaded portion of the target pins ITA0328A appear to be too long and as such may be (are indeed) touching the supports. I am going to remove 1/32" or appropriate to remedy this problem (drawing shows 0.035 clearance). |
Monday, February 02, 2015, 09:59, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Tray Build
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Missing heli coils installed this morning.
Threads had to be chased with tap for 1/4-20 heli coil and missing countersinks hand applied to allow for installation. Care was taken to ensure no "swarf" was spread and operation was super clean. Chased holes blown out with canned air and a vacuum placed on the other side.
Final assembly can and will now continue. |
Tuesday, January 20, 2015, 13:45, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Tray Alignment
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TM2 Tray Alignment is complete except for verification with alignment tray.
First attempt results were:
Front Target: Low 0.011, Left 0.011
Rear Target: Low 0.013, Left 0.002
Final iteration:
Front Target: Vertical 0, Horizontal 0
Rear target: Vertical - 0.003 low, Horizontal 0
Pictures were very hard to get but are below...camera is impossible to get square to lens so pictures are not entirely representative of looking through transit.
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Monday, January 26, 2015, 09:36, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Tray Alignment
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TM2 tray alignment was confirmed with the alignment tray this morning:
Front target 0.000 vertically, 0.000 horizontally.
Back target 0.003 low, 0.000 horizontally
Also, the master target jig was installed and measurements taken:
Front master target - 0.007 high, 0.000 left/right
Rear Master Target - 0.007 high, 0.000 left/right
Rear tray target - 0.003 low
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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 |
Friday, June 26, 2015, 09:45, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Status
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Containment box window waterlines have been connected and leak checked and new containment box cover installed.
Module ready for transport just before 9am. |
Wednesday, July 08, 2015, 14:48, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Status
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Water block jig has been removed. Stuck source tray side water block jig component has been removed. An attempt was made to connect the gas lines to there bracket however they contact/interfer with the tube heater lines...Anders is looking into a solution.
Containment box and front cover have been replaced and TM2 is ready to move to the silo. |
Thursday, July 16, 2015, 14:36, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Status
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IMG gauge, clip for ground to window lines and gas line extensions were installed today.
David and I also tried to locate the short between the coil line and MSP/Heat Shield...it went away for a bit...but is back. |
Friday, July 17, 2015, 13:51, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Status
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Gas lines extensions installed yesterday were too long and gas lines touched top inside of containment box. They have been removed and the gas lines re-installed in their original manner. Gas lines have been "adjusted" as to clear the tube heater lines, which was the original issue. |
Monday, July 20, 2015, 14:12, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Status
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Ultem high voltage spacer installed and 9 pin banana plug plugged in. Target has been inserted into the hot cell and will be installed after base-line electrical checks...probably first thing in the morning. |
Thursday, August 13, 2015, 13:46, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Status
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As previously mentioned, dump target installed with new mounting and high current fasteners.
Leak Check complete and ready to move to CS at 1:30 |
Friday, February 22, 2019, 10:31, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Source tray removal 6x
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The source tray has been removed from TM2. |
Friday, March 01, 2019, 09:57, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Source tray removal
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TM4 optics tray was installed onto the old TM2 source tray yesterday and tray filled with non-active metal scrap. Tray inserted into transfer frame 95% yesterday. During insertion the ball nut of the transfer jig became unfastened from its drive plate. This will have to be fixed before the jig can be used reliably again however we were able to finish the job...the transfer jig is 20 years old now so it is not entirely suprising that it needs some attention.
Today the Tm2 tray final install into the transport tray occurred by driving the tray drive screw and bringing the tray into the transfer frame the last inch 1/2 or so. "Feet" (ITA2380) had to be removed from sliding tray assembly to fit in the box however upon attempting this is was immediately clear that one of the screws was stuck and must have been cross threaded during assembly. As as result the entire drive bracket (ITA2375) had to be removed form the source tray to allow final insertion into the box.
11 handles from spent target transfers, 1 plastic bin box, Ta LP test target TRI coil, 1 aluminum box, sockets and extensions from spent target transfers and 5 obsolete legs from previous source tray replacements were amoung the items disposed of with the spent source tray. |
Friday, June 08, 2018, 11:36, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Source Tray Removal Progress
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The containment box has been removed from TM2, the Enzel lens and steerers disconnected and optics tray removal has commenced. |
Friday, June 19, 2015, 11:57, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Source Tray Progress
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Window waterline has been successfully connected using 1 1/2 inch long non-blunt start 1/4-28 bolts.
All bolt torques have been checked with dial torque wrench and are confirmed to be tight to 90 in lbs. |
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