 Thursday, June 30, 2011, 16:58, John Wong, Primary Beamlines, Repair, blah blah blah
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Thursday, March 01, 2012, 16:01, Keith C Ng, Primary Beamlines, Repair, 2C Rad Hard Valve Replacement
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4" indium flanges at the 2C rad hard valve were cleaned of the remaining indium by C. Ballard. Both upstream and down stream flanges were done,
ready for installation of new valve. |
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Friday, January 11, 2013, 15:44, Keith C Ng, Primary Beamlines, Maintenance, 1AVA8 valve o ring replacement
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Assisted vacuum group with removing 1AVA8:
- uncovered valve area and set up remote handling bridge over valve.
- shut off pneumatic supply to valve to render valve in mid position (shut off valve in 1A tunnel). disconnected electrical services and air supply |
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Monday, January 14, 2013, 16:36, Keith C Ng, Primary Beamlines, Maintenance, 1AVA8 valve o ring replacement
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continued with o ring replacement, replaced all relevant o ring seals on valve (valve body seal and actuator arm dynamic seals).
- valve re installed and services reconnected.
- valve cycled and checked; valve, limit switches ok. |
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Tuesday, January 15, 2013, 16:37, Keith C Ng, Primary Beamlines, Maintenance, 1AVA8 valve o ring replacement
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Job completed today and shielding block over valve restored.
- He leak checked valve and accessible up stream joints, no leaks found.
- J McKinnon checked power supplies for nearby steering magnets before and after covering valve. supplies working ok. |
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Wednesday, January 16, 2013, 17:03, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair
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Moved 18' blocks away from triplet area in preparation for uncovering triplet. Plastic laid down up stream of t2 target station for short term storage
of 6' layered blocks. |
Friday, January 18, 2013, 14:40, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair 
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Completed uncovering shielding and RH setup over 1A Q14 triplet area, see photo for RH setup.
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Tuesday, January 22, 2013, 16:02, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair
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1.5 day work delay due to plant group unavailable on the 21st of January. Gardner air compressor was being moved.
Today: |
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Wednesday, January 23, 2013, 15:51, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault)
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Continued work on finding ground fault in 1A triplet magnets;
D. Preddy connected ohmeters to 1AQ14 & 15 power supplies with power leads disconnected. Ohmmeters were connected from magnet power leads to |
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Thursday, January 24, 2013, 17:05, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault)
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Continued with work on finding ground fault on 1A triplet;
Uncovered Q15 & 16 to 1AS1 area. See photo below for setup. |
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Friday, January 25, 2013, 15:15, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault)
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Today: Uncovered 1A triplet cable chase and reconfigured shielding. D. Preddy will continue with diagnosing ground fault on Monday.
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Monday, January 28, 2013, 16:28, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault) 6x
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Rad survey map from last Friday (25 January) here.
Found exposed thermal switch cable in triplet service chase. |
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Tuesday, January 29, 2013, 16:28, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault)
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Restored shielding over 1A triplet chase.
Uncovered Q16 and set up RH bridge with lead blankets over Q16. |
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Wednesday, January 30, 2013, 16:46, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault)
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Cut and removed asymmetric steering cables from Q14 and 16, cables are no longer resting on magnet power bus bars.
Cut short sections left on magnet and connector block. North connector block left in place. Short cable section on magnet insulated with fiber |
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Friday, February 01, 2013, 14:15, Keith C Ng, Primary Beamlines, Maintenance, M9 Q1 Q2; storage pit assessment
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Uncovered radioactive waste storage pit to see contents. Assessing viability of moving contents inside to facilitate storage of M9 Q1 Q2 magnet. See
below for some photos.
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Monday, February 04, 2013, 16:04, Keith C Ng, Primary Beamlines, Repair, 1A triplet repair (ground fault)
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Restored 1A triplet shielding and removed RH shielding.
1. Moved severed asymmetric steering cable on Q14 so as not to touch the coils underneath and the cover plate above it. |
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Tuesday, February 05, 2013, 16:12, Keith C Ng, Primary Beamlines, Maintenance, 1A triplet repair (ground fault) (Completed)
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Today: D. Preddy completed another power test on 1A Q14, 15, 16 after all iron/steel shielding was restored. Magnet power and steering supplies were
checked and O.K.ed. R. Kuramoto deems triplet repair job completed.
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Wednesday, February 06, 2013, 16:33, Keith C Ng, Primary Beamlines, Maintenance, t2 monolith measurements
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Beam lines took measurements of top of T2 using Leica Total Station. Required no crane activities over 1A blocks.
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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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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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