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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Category Type Module Target/Number Subjectdown
  958   Tuesday, June 23, 2015, 14:19 chad fisherSouth Hot-CellRepairTM2 TM2 Water Block Jigs Removed

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.

Attachment 1: 20150623_140917.jpg
20150623_140917.jpg
  960   Wednesday, June 24, 2015, 10:16 chad fisherSouth Hot-CellRepairTM2 TM2 Vacuum Leak Check

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.

  839   Monday, February 02, 2015, 14:06 chad fisherSouth Hot-CellRepairTM2 TM2 Tray build

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.

 

 

 

Attachment 1: TM2_Tray_20150202_134752.jpg
TM2_Tray_20150202_134752.jpg
Attachment 2: TM2_Tray_20150202_134759.jpg
TM2_Tray_20150202_134759.jpg
  831   Thursday, January 08, 2015, 10:34 chad fisherSouth Hot-CellStandard Operation  TM2 Tray Build Status and Problems

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.

 

Attachment 1: TM2_Tray_20150108_09.jpg
TM2_Tray_20150108_09.jpg
Attachment 2: TM2_Tray_20150108_10.jpg
TM2_Tray_20150108_10.jpg
Attachment 3: TM2_Tray_20150108_11.jpg
TM2_Tray_20150108_11.jpg
Attachment 4: TM2_Tray_20150108_12.jpg
TM2_Tray_20150108_12.jpg
  833   Monday, January 12, 2015, 14:29 chad fisherSouth Hot-CellRepairTM2 TM2 Tray Build Status

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.

 

 

Attachment 1: TM2_Tray_20150112_01.jpg
TM2_Tray_20150112_01.jpg
  837   Thursday, January 29, 2015, 11:31 chad fisherSouth Hot-CellRepairTM2 TM2 Tray Build

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).

Attachment 1: TM2_Tray_20150126_112232.jpg
TM2_Tray_20150126_112232.jpg
  838   Monday, February 02, 2015, 09:59 chad fisherSouth Hot-CellRepairTM2 TM2 Tray Build

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.

  834   Tuesday, January 20, 2015, 13:45 chad fisherSouth Hot-CellRepairTM2 TM2 Tray Alignment

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.

 

Attachment 1: TM2Alignment_Target_Front_Jan_20.jpg
TM2Alignment_Target_Front_Jan_20.jpg
Attachment 2: TM2_Alignment_Target_Rear_Jan_20.jpg
TM2_Alignment_Target_Rear_Jan_20.jpg
  835   Monday, January 26, 2015, 09:36 chad fisherSouth Hot-CellRepairTM2 TM2 Tray Alignment

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

 

Attachment 1: TM2_Tray_20150126_090448.jpg
TM2_Tray_20150126_090448.jpg
  2473   Tuesday, August 08, 2023, 13:01 David WangNorth Hot-CellStandard OperationTM2TiC#6TM2 TiC#6 post run electrical check at NHC.

TM2 TiC#6 post run electrical check has been done at TCS. See attachment

Attachment 1: TiC#6_post_run_electrical_check.pdf
TiC#6_post_run_electrical_check.pdf TiC#6_post_run_electrical_check.pdf
  964   Friday, June 26, 2015, 09:45 chad fisherSouth Hot-CellRepairTM2 TM2 Status

Containment box window waterlines have been connected and leak checked and new containment box cover installed.

Module ready for transport just before 9am.

  986   Wednesday, July 08, 2015, 14:48 chad fisherSouth Hot-CellRepairTM2 TM2 Status

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.

  1000   Thursday, July 16, 2015, 14:36 chad fisherSouth Hot-CellRepairTM2 TM2 Status

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.

Attachment 1: 20150716_110247.jpg
20150716_110247.jpg
Attachment 2: 20150716_142818.jpg
20150716_142818.jpg
  1001   Friday, July 17, 2015, 13:51 chad fisherSouth Hot-CellRepairTM2 TM2 Status

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.

Attachment 1: 20150717_134123.jpg
20150717_134123.jpg
  1002   Monday, July 20, 2015, 14:12 chad fisherSouth Hot-CellRepairTM2 TM2 Status

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.

Attachment 1: 20150720_134819.jpg
20150720_134819.jpg
Attachment 2: 20150720_135747.jpg
20150720_135747.jpg
Attachment 3: 20150720_140100.jpg
20150720_140100.jpg
  1035   Thursday, August 13, 2015, 13:46 chad fisherSouth Hot-CellRepairTM2 TM2 Status

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

  1874   Friday, February 22, 2019, 10:31 chad fisherSouth Hot-CellRepairTM2 TM2 Source tray removal

The source tray has been removed from TM2.

Attachment 1: 20190220_090149.jpg
20190220_090149.jpg
Attachment 2: 20190222_100828.jpg
20190222_100828.jpg
Attachment 3: 20190222_101507.jpg
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Attachment 4: 20190222_101507.jpg
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Attachment 5: 20190222_101624.jpg
20190222_101624.jpg
Attachment 6: 20190222_102240.jpg
20190222_102240.jpg
  1879   Friday, March 01, 2019, 09:57 chad fisherSouth Hot-CellRepairTM2 TM2 Source tray removal

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.

Attachment 1: 20190228_095131.jpg
20190228_095131.jpg
Attachment 2: 20190228_143718.jpg
20190228_143718.jpg
Attachment 3: 20190301_074849.jpg
20190301_074849.jpg
Attachment 4: 20190301_092907.jpg
20190301_092907.jpg
  1733   Friday, June 08, 2018, 11:36 chad fisherSouth Hot-CellRepairTM2 TM2 Source Tray Removal Progress

The containment box has been removed from TM2, the Enzel lens and steerers disconnected and optics tray removal has commenced.

Attachment 1: TM2_06082018.jpg
TM2_06082018.jpg
  955   Friday, June 19, 2015, 11:57 chad fisherSouth Hot-CellRepairTM2 TM2 Source Tray Progress

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.

ELOG V2.9.2-2455