 Friday, March 04, 2016, 16:05, Keith C Ng, Primary Beamlines, Development, vault beamline 4 disassembly
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Attempted to remove RH parts between Q1, 2 and monitor vacuum box. Removed Q1 to monitor
box parts, could not remove monitor to Q2 parts, pin drive and indium ring are stuck in place. Indium joint is severed however. Collar was removed. |
Monday, February 22, 2016, 16:09, Keith C Ng, Primary Beamlines, Development, 4V CM1 blanking 
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Rolled indium into new blanking plate turned down to 5.550". Dry fit with no indium
ok. Assembled hook eyes from the previous blank off plate (removed from the slits box?). Used the same 20.5 mm spring compression (1.5 turns of the nut |
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Friday, February 19, 2016, 14:03, Keith C Ng, Primary Beamlines, Development, 4V CM1 blanking
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Continued with work blanking off CM1 flange.
- Placed lead shot on left and right side of the CM1 flange to lower fields. No significant change, went from 2.8 mSv to 1.9-2 mSv.
- Inspected indium flange, some residue on 3 and 9 (left and right) clock sides of knife flange. No significant indium stuck on, some small cleanup |
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Thursday, February 18, 2016, 16:34, Keith C Ng, Primary Beamlines, Development, Vault beam line 4V disassembly
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Disconnected all 4V beamline joints. Parts for indium joints removed except for the Q1 to downstream monitor box and monitor upstream to Q2 due to access
issues (no space for ingress). Removed pin drive and collars currently piled on top of the beam line stands near the concrete shielding block on the north
side of the vault. These need to be sorted for storage as waste or spares. Indium ring carriers were all bagged and left in the area waiting for a storage |
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Friday, February 05, 2016, 08:48, Keith C Ng, Primary Beamlines, Maintenance, 4VVR1 Removal
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Returned work permit C2016-01-27-2 due to tank lid being raised and elevated fields make the work area un-favourable to work in. Work will resume to
blank off the combination magnet flange when the tank lid is closed in March.
Tasks remaining: |
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Friday, January 29, 2016, 17:08, Keith C Ng, Primary Beamlines, Maintenance, 4VVR1 Removal
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Today:
Disconnected and removed 4VVR1 gate valve and removed from beamline.
- Pin drives removed and stored in bags near by |
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Friday, April 17, 2015, 15:11, Keith C Ng, M9, Development, m9 t2 alignment job 6x
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Today: Restored filler shielding in T2 M9 Q1Q2 hole.
- Blocks marked with beam direction on this installation. Active faces point toward target monument.
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Thursday, April 16, 2015, 09:17, Keith C Ng, M9, Development, m9 t2 alignment job 9x
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Yesterday (Apr 15):
1) Installed TB22265 on to M9 exit port at 18:48 with no vacuum and left over night. Done per 2013 installation procedure (1.5 turns of the preload
nut, after pins are engaged and springs are at free length) |
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Tuesday, April 14, 2015, 08:31, Keith C Ng, M9, Development, m9 t2 alignment job
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Yesterday:
1) Addressed mounting issue with the 15" alignment jig: removed material from the spring eye to make the hole from 1" to 0.75" when
bottomed out. This would cause the spring eye and mounting eyelets on B1 to have 0.226" of starting overlap, vs the original 0.024" negative |
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Friday, April 10, 2015, 16:25, Keith C Ng, M9, Development, m9 t2 alignment job
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Continued with installation of target jigs:
1) Craned in equipment for alignment group.
2) Attempted to install target jig over B1 flange; |
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Thursday, April 09, 2015, 17:20, Keith C Ng, M9, Development, m9 t2 alignment job
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1) Vented T2 and removed rubber seal blanking plate, vacuum level appeared to be at normal operating ranges prior to the indium seal developing a small
leak.
2) Removed B1 dust cover, cover was stuck to B1 flange due to oil residue. Oil residue is believed to be from a vacuum pump being turned on in |
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Wednesday, April 08, 2015, 14:18, Keith C Ng, M9, Development, m9 t2 alignment job 12x
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1) Visual inspection of T2 M9 flange: no obvious indium deposits on T2 flange knife edge seen, left over indium from before 2013 is still present on
counter bore. See screen captures. Screen captures show state of flange after removing blanking plate, no cleaning was performed after removal.
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Tuesday, April 07, 2015, 16:09, Keith C Ng, M9, Development, m9 t2 alignment job
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work to prepare for installation of alignment jigs on T2M9 and M9B1 continues:
1) Vented T2 volume and removed M9 blanking plate. Volume was not fully vented so plate was stuck and had to be pried off slightly. Around 2 turns
of the nuts were required to undo the spring eyes, this is likely less than the total number of turns that were used to tighten the assembly since the |
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Tuesday, April 07, 2015, 08:27, Keith C Ng, M9, Development, m9 t2 alignment job
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Work completed for Thursday:
1) Shielding filler blocks removed from M9Q1Q2 hole. Highest field was 5mSv/h coming from TSH0081 on the end facing the monolith. Blocks and frame
had 1000-1200 CPM of contamination. |
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Wednesday, April 01, 2015, 16:07, Keith C Ng, M9, Maintenance, T2 M9 area work
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1) Block and bridge setup is mostly complete for T2 M9 sighting job. Waiting on approving drawing TB22322 in order to continue with installing sighting
equipment.
2) He leak checked upstream of T2 and surrounding area. Appears to be a small leak at the M9T2 exit port through the blanking plate seal. Mode |
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Monday, March 30, 2015, 16:10, Keith C Ng, M9, Repair, T2 area uncovering
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Started to uncover and create work space around T2 M9 area, setup is mostly complete. Some misc items to be craned into position. RH set up is mostly
to do He leak checking of 1A beamline due to vacuum leak somewhere in the area around T2, bridge on B1 side of M9 has not been set yet. |
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Thursday, March 05, 2015, 08:42, Keith C Ng, Primary Beamlines, Repair, 1AT1 area water leak fixes 11x
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1) Quick connect fittings on the rotary collimator were leaking (the two red collared fittings in photo below).
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Thursday, February 26, 2015, 16:22, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 blank off (part of UCN work)
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He leak checked T1M13Q1 joint, is leak tight.
- Detected a small leak in nearby M15 slits box. 4.3x10E-9 atm cc/sec was highest leak rate recorded (Vac group says is small leak, okay
to run). |
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Wednesday, February 25, 2015, 14:57, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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Blanking plate with indium between T1 and M13Q1 flange has been installed, joint will be He leak checked tomorrow. Vac group informs that pumping of
T1 volume will start this afternoon going over night.
- The spring eyes on Q2 vacuum box are ~0.2" above the pin supports, the gap changes by 0.05" between open and closed positions. |
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Monday, February 23, 2015, 15:57, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 blank off (part of UCN work)
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"Hector" shield block installed into place, Q1Q2 Vacuum box still actuates normally. It does not appear that the position of the pin drive
has shifted. Some additional shielding steel is to be placed on top of the shield block once RH setup is removed.
Remote handling equipment installed around T1 ready to install indium blanking plate between T1 and M13Q1. |
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