 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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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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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, 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. |
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Thursday, March 31, 2016, 15:32, Keith C Ng, Primary Beamlines, Development, 1VM3 to 1VQ4 joint.
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Re-installed indium vacuum joint for 1VQ4, routing installation. R. Kuramoto sprayed silicone grease on to the threads and bushings on pin drive. Drove
down tapererd pins and stopped 1/16" short of old marker markings. RK. Commented on the drive screw bending under load, reversed drive 1/2 turn
to relieve the stress on the screw. |
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Monday, January 30, 2017, 12:01, Keith C Ng, M9, Development, T2 leak check with vac group
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Week of Jan 23 to 27:
- Uncovered shielding around T2 M9 area. |
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Wednesday, February 01, 2017, 15:34, Keith C Ng, M9, Development, T2 M9 Setup
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Finished setting up work area around T2 M9 front end.
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Friday, February 03, 2017, 14:57, Keith C Ng, M9, Development, Removing shield blocks and leak check results.
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Removed temporary shielding blocks from M9 hole and placed in temporary bunker. Capped with 18' shielding block. Blank off ready to be removed and target
jigs ready to be installed, weather permitting.
Raw leak check results from vacuum group attached as pdf. |
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Tuesday, February 07, 2017, 15:36, Keith C Ng, M9, Development, t2 m9 job
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- Removed blank off from t2 m9 port, had to pry off with screw driver via spring ears. Clean removal it seems.
- Blank off is 200 uSv @ .5 m, 5000 CPM above bg.
- looks like 2 knife steps all around with oozing on the left and right, 0 and 180 deg |
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Thursday, February 09, 2017, 16:14, Keith C Ng, M9, Development, t2 m9 alignment
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Prepared m9 and b1 flanges for accepting their target jigs. The target jigs need to be reset by alignment group, 15" was bumped and 8" lost
2 of the target balls into the beam line. Reflector balls were recovered with a magnet on a stick, contaminated with 250 CPM, need alignment group to decontaminate
and clean them before use and reset the two jigs. |
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Friday, February 10, 2017, 15:53, Keith C Ng, M9, Development, t2 m9 job
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Installed all jigs and Alignment group did their shoots successfully. Used individual pins on the 15" target jig and worked ok. 8" target jig
has some previously undiscovered issues from the previous shoot from 2015 but did not affect this shoot. |
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Tuesday, February 14, 2017, 16:08, Keith C Ng, M9, Development, T2 M9 2015 vs 2017 comparison
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| Attached a quick comparison of M9 exit port flanges WRT indium remnants: looks roughly the same. Will attempt to install blanking plate tomorrow morning. |
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Wednesday, February 15, 2017, 15:36, Keith C Ng, M9, Development, t2 m9 blank off
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Installed the blank off on the T2 M9 exit port:
Blank off 2013 installation procedure: 2.5 turns of the preload nut, after pins
are engaged and springs are at free length. |
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Friday, February 17, 2017, 13:33, Keith C Ng, M9, Development, T2 M9 vacuum
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Leak checked the blank off at T2 M9 exit port with Dimo Y. and Edi D.V. (Vac Group) and they confirm it is leak tight. Blank off installed on the 15th,
pumping started on morning of the 16th and leak checked today in the morning on the 17th.
Starting to clean up work area. |
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Monday, February 20, 2017, 15:58, Keith C Ng, M9, Development, t2 m9 job wrap up
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| Restored shielding to T2 M9 void, blocks seem more crooked compared to previous years. |
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Wednesday, March 08, 2017, 16:05, Keith C Ng, Primary Beamlines, Repair, collimator joint repair
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Started uncovering the area above the T2 to Q13 joint:
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Thursday, March 16, 2017, 15:50, Keith C Ng, Primary Beamlines, Repair, collimator b transition to t2
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On Monday found leaking joint was the ring directly downstream of T2. Vacuum group has been spraying Vacseal (http://www.vacseal.net/Pages/default.aspx)
sealant over the last 3 days attempting to get it in between the flanges and have partial vacuum to draw in the fluid. Seven sprays have been completed
as of March 16th. |
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