 Friday, February 22, 2013, 17:27, Keith C Ng, M9, Repair, M9 Q1 Q2 removal, Q2 joint dissassembly 
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M9 Q2 15" pin drive was removed and disconnected.
- Pin drive retention screw had to be completely removed to be able to remove pin drive completely.
- Had to make tools to remove pin drive and retention screw, see photos. |
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Monday, February 25, 2013, 16:37, Keith C Ng, M9, Maintenance, M9 Q1 Q2 removal, Q2 seal disassembly 7x
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Removed Q2 15" indium seal ring, discovered seal contained rubber on both sides instead of indium.
- Some kind of oil residue seen at the bottom of the sealing ring and inside of the Q2 vacuum box. (Note: Oil residue was from downstream vacuum
roughing pumps. They were connected when T2 M9 joint was leaking. Oil got into the vacuum pump back streamed into the beam line.) |
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Wednesday, February 27, 2013, 16:15, Keith C Ng, M9, Maintenance, M9 Q1 Q2 removal, rad waste pit prep
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Radioactive waste pit uncovered, red barrel with unknown contents taken out for assessment. R. Ralea from RPG determined barrel was too active to be
removed from pit and therefore replaced into storage pit.
M. Kinakin took the aluminum samples from the two indium test rings and the stainless steel bolt taken from Q1 for analysis. Will return the stainless |
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Friday, March 01, 2013, 15:28, Keith C Ng, M9, Maintenance, Radadioactive Waste Pit Organizing
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Successfully stacked old m20 q2 q2 magnet assembly on top of old M9 Q1 Q2 magnet and M11 septum magnet. See photos.
- Done to create room for current m9 Q1,2 magnet.
- Used 6' remote handling bridge on north end of open pit for shielding. |
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Monday, March 04, 2013, 16:48, Keith C Ng, M9, Maintenance, M9 Q1 Q2 removal, preparation 6x
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Preparing for M9 Q1,2 move:
1. Re-arranged/organized cables on top of magnet.
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Tuesday, March 05, 2013, 14:15, Keith C Ng, M9, Maintenance, M9 Q1, 2 removal 7x
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Removed M9 Q1 Q2 from beam line 1A via crane and transferred from beam line to radiation waste storage.
Magnet craned out of position in front of T2 monolith and then placed into bunker next to work site.
- Bunker pre-lined with plastic enough to envelope magnet. |
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Thursday, March 07, 2013, 08:35, Keith C Ng, M9, Repair, M9 T2 flange blank off
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Work on blank off of M9 T2 started: Cleared away blocks making up bagging bunker. R. Kuramoto took some initial photos of the M9 T2 area post Q1Q2 removal;
See Remote Handling network drive for photos.
G. Morris posted photos of M9 Q1Q2 just after removal from beam line 1A. Click here for link: http://trshare.triumf.ca/~gmorris/BL1A/M9/2013.3.5/ |
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Tuesday, March 12, 2013, 16:33, Keith C Ng, M9, Maintenance, M9 T2 flange blank off, preparation
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Scraped M9 T2 flange, removed what little indium was left on flange.
- Completed two passes, some indium still remains on flange. R. Kuramoto deems this sufficient for now.
- Scraping tool did not fit properly over flange, was forced into place and had to be pried off when scraping finished. |
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Wednesday, March 13, 2013, 16:21, Keith C Ng, M9, Maintenance, M9 T2 blanking off preparation
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1. Re-scraped M9 T2 flange after reviewing video of flange.
- Some indium remains on inside of counter bore of flange, indium hard to remove due to current tooling.
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Wednesday, March 20, 2013, 08:59, Keith C Ng, Primary Beamlines, Development, T2 M9 off beamline activities
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Yesterday:
Did vacuum testing on MK2 8" indium blank off; installed w/indium on test stand and put under vacuum.
- After 1 turn on spring eye nuts, a soft vacuum seal was achieved but the throttle valve (old leak detector) could not be opened. Spring eye nuts |
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Tuesday, March 26, 2013, 09:04, Keith C Ng, M9, Repair, M9 Q1Q2 void inspection
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Yesterday: did visual, video inspection and still imaging of T2 M9 Q1Q2 void. G. Morris came down to work site for visual inspection, noticed and was
concerned about a few of the shielding blocks that were "contacting" the T2 monolith. Of note are the known "crumbling blocks" directly
North and West of the T2 monolith and the pointy shielding block (2MB2, DWG# D-3399) North of the monolith which sits on top of a crumbling block. It was |
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Tuesday, April 09, 2013, 16:41, Keith C Ng, M9, Maintenance, T2 M9 exit port blank off
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Blanked off T2 M9 exit port with indium seal blank off.
1. Removed temporary rubber blank off from T2 flange. |
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Wednesday, April 10, 2013, 16:20, Keith C Ng, M9, Repair, M9 T2 flange blank off
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Continued with work on T2 M9 exit port and area; Vacuum started after 13:00 hours (due to vacuum pump issues at T2). He leak checked flange at 14:30,
determined to be He leak tight. Vacuum pressure as of 14:45 in T2 volume (1ACG7) was at 36mT. |
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Thursday, April 11, 2013, 15:43, Keith C Ng, M9, Repair, T2 M9 exit port temporary shielding 10x
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Installed shielding stand (TSH0094) for T2 M9 exit port as per drawing TSH0095; three steel blocks in total were lowered into the T2 M9 void. See photos.
Started to tear down RH setup after shielding was lowered into place.
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Thursday, December 12, 2013, 14:21, Keith C Ng, Primary Beamlines, Repair, T2 suck tube active/contaminated water removal
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Removed "suck tube" filled with active/contaminated water from top of 1A beam line blocks to meson extension hall warm cell lab. Highest activity
recorded was measured at 22mSv on contact, 2000µSv @ 1/2 m. Tube was bagged and craned over to warm cell lab for temporary storage and will be dealt
with at a later date. See work permit 2013-12-12-2 for more details. |
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Wednesday, January 14, 2015, 11:00, Keith C Ng, Primary Beamlines, Maintenance, 1VQ4 & 1VQ6 beamtube removal (WR #2686)
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Disconnected and removed beam tube from 1VQ4, 5, 6.
- Q6 end had transition end removed with pin drive driven into the retracted position and left behind but indium joint was still intact. |
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Friday, January 23, 2015, 15:21, Keith C Ng, Primary Beamlines, Maintenance, 1VQ4 joint section (WR #2686)
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1VQ4 & 1VQ6 beamtube was installed by UCN group. RH provisonally installed aluminum indium carrier ring with no indium into joint space with clamping
collar and pin drive. Joint is currently connected but not vacuum tight. Joint will be sealed with indium at a later date, tbd.
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Tuesday, February 03, 2015, 16:35, Keith C Ng, Primary Beamlines, Development, UCN T1 shutdown work
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RH bridge has been set up over T1 to Q1Q2 area, see images for radiation survey of work area. Joint is still intact, work will commence tomorrow.
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Wednesday, February 04, 2015, 16:12, Keith C Ng, Primary Beamlines, Development, UCN T1 shutdown work
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UCN T1 work continues:
- Retracted Q1 T1 pindrive, took 34.5 turns. Pins left bolted to T1 monument.
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Thursday, February 05, 2015, 16:06, Keith C Ng, Primary Beamlines, Development, T1 Q1Q2 blank off work
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Work continues on T1 M13Q1 joint:
- Discovered some sort of vacuum box brace restricting the collapse of the vacuum box when the air cylinders were actuated. Upon closer observation
the air cylinders appear to work, unsure if the "retract" and "extend" port markings work as labeled. |
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