 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. |
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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Friday, February 06, 2015, 16:01, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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T1 M13Q1Q2 work continued:
- Removed T1 Q1 indium seal ring, collapsed center vacuum box bellows using pneumatic cylinders. The bellows restraint was able to be rotated slightly
so that the cylinders could be retracted. The brace/restraint bar could only be rotated until the bar made contact with the electrical connectors on Q1. |
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Tuesday, February 10, 2015, 16:15, Keith C Ng, Primary Beamlines, Development, T1 Q1Q2 blank off work
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RH beam line work for UCN continues at T1.
- Attempted to scrape t1 flange, narrow scraping tool does not fit into space because of the headers on the water system of the magnet. Decided
to continue installing blanking plate with rubber anyway. |
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Wednesday, February 11, 2015, 16:46, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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work continues on T1 M13 area for UCN.
- He leak checked T1 M13Q1 joint (sealed with rubber) and surrounding uncovered area, no leaks found.
- Moved back B1 jaws box enough to clear the spring eyes on the Q2 vacuum box. |
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Thursday, February 12, 2015, 14:29, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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Removed M13 B1 magnet from beam line without issues, Q2 vacuum box is covered with bag and vacuum box "extended" with air off. Field is now
3000uSv @ 1/2m from the open vacuum box where B1 magnet was.
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Friday, February 13, 2015, 15:10, Keith C Ng, Primary Beamlines, Development, IVM3-IVQ4 indium joint section (WR #2686)
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Installed 4" indium seal at 1VM3 to IVQ4. No real problems with installation.
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Tuesday, February 17, 2015, 16:02, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 vacuum box anchor (part of UCN work)
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The replacement pin drive anchor (see TB22300) for M13 Q1Q2 vacuum box lowered into initial position. The original B1 base plate was able to rock when
weight was placed upon it; A concrete block was used to counterweight the base while the new pin drive was being installed. The pindrive has not been adjusted
into final position. |
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Friday, February 20, 2015, 16:28, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 vacuum box anchor (part of UCN work)
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Installed Q1Q2 pin drive and attempted to align it to the vacuum box. Spent majority of the day trying to align the pin drive/anchor.
- Pneumatic drive does not actuate smoothly, appears to be binding/catching, possibly due to some kind of misalignment, issues with the pneumatics.
A 1" space between T1 and Q1 flanges has been set but has a slight taper, starting 1" wide on the north east side tapering down by ~1/16 (to |
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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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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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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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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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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, 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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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 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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