1.) Completed covering up 1A Q15.

2.) RH flask currently contains the 8 insulators removed from Q15. 3.6 mSv/h on contact, 40-60 uSv/h @ .5 m. Double bagged. Bag exterior was swiped clean, inside was not checked (didn’t want to breach interior bag just to swipe components).

Correction that all supply side (even numbered insulators) ceramic insulators on Q15 have been replaced with new old stock insulators as of today. Beamlines finds no power or water issues. Expected to cover up tomorrow moving on to the Q12 and Q13 magnet area next week.

T2 vacuum started today.

One of the cracked insulators is being stored temporarily in the warm cell (it is contaminated), Scott M. will be analyzing the broken ceramic once he has decontaminated it.

Beamlines has changed out another 2 insulators on Q15 after discovering two additional leaks. Insulators #2 & #4 were replaced. One of them failed on installation (broken ceramic?)  and was replaced by another stocked replacement. Magnet was pressure tested and now enegerized as part of power testing. Doug P. expects repairs to be complete and to cover up the area by tomorrow.

Assisted beamlines in replacing 2 insulators on 1A Q15 magnet. #10 and #14 insulators were found to be leaking at the ceramic, where the stainless steel fitting joins the insulator. They were both replaced. During re-installation of the #10 ceramic, the VCR coil termination broke off the coil end and a new one with updated design (see TBP0379) had to be soldered back in its place. The original SS fittings are deemed to have problems in their construction and have been replaced over the years.

Video capture shows soldered fitting with a large glob of excess solder on bottom. Other photos show new fitting soldered in place and completed assembly of fitting with new insulator.

test

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.

Tomorrow, 2 more applications will be made and then Vacuum group will pump the T2 volume over the weekend.

Started uncovering the area above the T2 to Q13 joint:

Restored shielding to T2 M9 void, blocks seem more crooked compared to previous years.

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.

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.

Blank off 2015 installation procedure: 1.5 turns of the preload nut, after pins are engaged and springs are at free length. (one less turn for insurance?)

2017 (this year) installed blanking plate via hammering/tapping pins into place:

1. Spring eyes were set at spring free length and then placed down
2. Pins did not slide through eyes as was expected.
3. Nuts were then backed off roughly 1 turn, then pins were lightly tapped down into place
4. Nuts then turned back to zero/starting position
5. Then alternating east west by .5 turn tightened to 1.5 turns, 1/2 turn indicated by half bar pen marking.

This year different than prior years due to tapping pins into place rather than backing off eyelet nuts and sliding pins into place *then* tightening to zero point and then tightening to preload.

Blank off installed at 11:15, vacuum group not able to pump on T2 until tomorrow.

Attached a quick comparison of M9 exit port flanges WRT indium remnants: looks roughly the same. Will attempt to install blanking plate tomorrow morning.

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.

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.

Syd installed two springs on the 8" target jig and only one spring is needed.

 - 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 positions. 0 and 180 look like 2.5 steps. Looks like it took one turn to remove/loosen blank off.

- Junk indium at bottom of exit port still present, indium knife edge seems clean. Ribbon stayed in blank off.

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.

Finished setting up work area around T2 M9 front end.

Week of Jan 23 to 27:

- Uncovered shielding around T2 M9 area.

- Initially set up remote handling bridge thing but stopped because of the stacked 12 x 2 x 3 blocks, looks precariously tall, wobbly. Suggested to postpone leak checking work and configure bridge to a more usual setup for safety.

 - Moved some bridges around, put some lights in cable tray area.

- Beamlines tied in M9 floor markings to the meson hall grid on the 18th

- Beamlines tied in B1 alignment to meson hall grid on 26th

- He leak checked around T2 area with Dimo and Edi, nothing found. Suspicious leak at M20 scraper area but cannot rule out drift toward the collimator joint. Will need to reassess later on in the shutdown when we go to that area.

- Doug and electricians looked around the cable tray feeding to M9, via tunnel and mezzanine.

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.

Contacted E. Dalla Valle to continue assembling beam line down stream and pump when ready.

 On 14March2016, 4VQ1&Q2 were removed from BL4V and lowered into the Vault basement B3 level where they were stored in the south west corner on their respective wood pallets.  The hot ends of both magnets were place against the west wall.  4VQ2 was lifted out first and moved temporarily downstream where it was separated from its magnet stand. Q2 was then craned into the basement where it was tipped 45^o to lay on the flat side of the magnet face.  Q2’s magnet  stand and it’s mounting brackets were then craned down onto another pallet and moved to the same storage area.

4VQ1 was pulled about 3-4 ft. downstream using a pair of ¾ Ton come-along winches to clear the overhead Elevating Jacks platform.   Q1 was then separated from its stand where both were lowered onto pallets like Q2 and moved to the storage area.  Four concrete shield blocks were postioned down stream of 4VCM1 to shield the beam exit port.

The total accumulated dose received was 0.46mSv spread amongst 5 people.  See W/P C2016-03-11-5 for Rad survey levels of Q1 & Q2.

See the attached photos.

 On 8March2016, under W/P C2016-03-08-2, 4VQ3 was lifted out of BL4V with the vault orbit crane where it was first weighed then lifted onto the RH flat deck rail dolly.  It was then moved into the RH basement where it was surveyed before lifting it up onto the Red wagon cart in the RH loading bay.  It was then pulled to the Meson Hall loading bay by fork lift where and then over the Cycloton vault to the top of the E-Hall roof beams under the 10 Ton crane.  4VQ3 weighed 5900 Lbs. using Plants Groups "RON Load scale".  It was 60uSv/Hr @ 0.5 M on the upstream side with no contamination on the swipes.

The total accumulated dose received was 0.34mSv spread amongst 7 people.

See the attached photos.