 Friday, February 20, 2015, 16:28, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 vacuum box anchor (part of UCN work)
|
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 |
|
Tuesday, February 17, 2015, 16:02, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 vacuum box anchor (part of UCN work)
|
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. |
Friday, February 13, 2015, 15:10, Keith C Ng, Primary Beamlines, Development, IVM3-IVQ4 indium joint section (WR #2686) 
|
Installed 4" indium seal at 1VM3 to IVQ4. No real problems with installation.
|
|
Thursday, February 12, 2015, 14:29, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
|
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.
|
|
Wednesday, February 11, 2015, 16:46, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
|
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. |
|
Tuesday, February 10, 2015, 16:15, Keith C Ng, Primary Beamlines, Development, T1 Q1Q2 blank off work
|
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. |
|
Friday, February 06, 2015, 16:01, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
|
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. |
|
Thursday, February 05, 2015, 16:06, Keith C Ng, Primary Beamlines, Development, T1 Q1Q2 blank off work
|
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. |
|
Wednesday, February 04, 2015, 16:12, Keith C Ng, Primary Beamlines, Development, UCN T1 shutdown work
|
UCN T1 work continues:
- Retracted Q1 T1 pindrive, took 34.5 turns. Pins left bolted to T1 monument.
|
|
Tuesday, February 03, 2015, 16:35, Keith C Ng, Primary Beamlines, Development, UCN T1 shutdown work
|
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.
|
|
Friday, January 23, 2015, 15:21, Keith C Ng, Primary Beamlines, Maintenance, 1VQ4 joint section (WR #2686)
|
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.
|
|
Wednesday, January 14, 2015, 11:00, Keith C Ng, Primary Beamlines, Maintenance, 1VQ4 & 1VQ6 beamtube removal (WR #2686)
|
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. |
|
Thursday, December 12, 2013, 14:21, Keith C Ng, Primary Beamlines, Repair, T2 suck tube active/contaminated water removal
|
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. |
|
Thursday, April 11, 2013, 15:43, Keith C Ng, M9, Repair, T2 M9 exit port temporary shielding 10x
|
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.
|
|
Wednesday, April 10, 2013, 16:20, Keith C Ng, M9, Repair, M9 T2 flange blank off
|
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. |
|
Tuesday, April 09, 2013, 16:41, Keith C Ng, M9, Maintenance, T2 M9 exit port blank off
|
Blanked off T2 M9 exit port with indium seal blank off.
1. Removed temporary rubber blank off from T2 flange. |
|
Tuesday, March 26, 2013, 09:04, Keith C Ng, M9, Repair, M9 Q1Q2 void inspection
|
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 |
|
Wednesday, March 20, 2013, 08:59, Keith C Ng, Primary Beamlines, Development, T2 M9 off beamline activities
|
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 |
|
Wednesday, March 13, 2013, 16:21, Keith C Ng, M9, Maintenance, M9 T2 blanking off preparation
|
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.
|
|
Tuesday, March 12, 2013, 16:33, Keith C Ng, M9, Maintenance, M9 T2 flange blank off, preparation
|
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. |
|