TM4 has been disconnected in ITE. All water lines on TM4 have been purged. ITE is venting now.

TM#4 with Ta#40 has been moved from the east target station to the south hot cell move went well.

TM#4 with SiC #29 has been moved from the conditioning station to the east target station, move went well.

TM4 has been connected in ITE. All turbo pumps have been started now. The pumping down on TM4 and ITE is good so far. The water interlock check on TM4 is done,and everything is fine. The ITE  IG1 still couldnt be turned on even if we replaced a new TM4  IG1 at CS. The problem is on the connecting cable from ITE to electrical room or gauge controller. I talked with Friedhelm  and vacuum group will be noticed on this problem.

I moved5shielding blocks from ITE to block storage area, This is a job for preparing ITE vacuum surge investigation and leak check.

By pressurizing the water lines with 70 psi helium David and I detected a major leak on the Coil 1 circuit. The response maxed out on the leak rate on the leak detector and we could also see a pressure increase on the leak detector. ISAC controls reported a change in vacuum at the same time (link).

The Heat Shield and Coil 2 circuit was checked before we moved to Coil 1. No response was detected on these two circuits. We would like to check the remaining circuits as well, but this cannot be done today due to the large amount of helium still present. The remaining circuits will have to be checked tomorrow morning.

All water circuits except Coil 1 were leak checked by David and Anders. No obvious signals were detected except some small possible responses. See attached notes for details.

TM#3 has been moved from the conditioning station to the east target station, move went well.

 Blocks 1-4 have been moved from ITW to ITE. Block 5 was moved to a storage area as it will be in the way of the harp repair. Danka took air samples and found 200 counts of alpha on the air samples but nothing on the swipes. It is recommended that resporators be worn while blocks are being lifted and lowered. She will check the monitor tomorrow to confirm it is behaving as it should.

The blocks above the pre-separator section of the ISAC beam lines were removed today in the Target Hall by Bevan Moss and Chad Fisher with Lynne LeMessurier present from RPG.

The two blocks in the layer below the top layer above the pre-separator were damaged on removal (see attached photos).  This was due to an attempt to lift them in the incorrect sequence caused by misinterpretation of the labeling / numbering system drawn on the top of the blocks.  The blocks are labelled for the replacement sequence, but not for the removal sequence.  An attempt was made to lift a block that had an overlap with an adjacent block that was not visible, causing damage to two blocks.  A note was added in black marker to the critical block to indicate that it should be removed last (shown in attached photo).  The block replacement sequence will be photographed and a procedure document will be written by Bevan, with a bound copy of the procedure provided in the Target Hall, in order to prevent such an incident from occurring again.  Broken pieces of the blocks were collected and placed in a 5-gallon pail.

The removal of all of the blocks caused the depression in the target station to fluctuate around the trip point (17 inches of water column), which caused the ventilation alarm to trip on and off constantly.  Operations contacted me to ask if this could be remedied.  Bevan closed the damper to ITW, which brought the depression to a low enough value so that the alarm could be defeated properly.  This was around 2pm.

Preliminary co-ordination of the ITE Harp 9 removal job was discussed by Scott Kellogg and Ron Kuramoto around lunch time.  Keith Ng (RH) and Scott searched for the blank-off that was used during the last Harp 9 repair (removed from B/L in March 2013) but they could not locate it.  I was later able to find the blank-off bagged in a grey rubbermaid bin at the bottom of the stairs in the target storage vault pit (under the SHC / NHC ventilation and filters).  The blank-off was found bagged and tagged as surveyed at 100 counts @ 0.5m on March 27, 2013.  I gathered Scott, Ron Kuramoto, and Danka Krsmanovic to co-ordinate the Harp 9 removal and blank-off installation, starting at around 2:30 pm.

For the Target Hall Harp work, Ron Kuramoto and Scott prepared the required tools and plastic coverings / bags.  I acted as crane operator.  Danka was the surveyor present.  Anders Mjos joined the group for photos and moral support.

Scott disconnected services from the Harp device, and prepared it for lift.  I called operations to confirm that the section of B/L had been vented.  Ron and Scott used the RH tools to disconnect the 2 vacuum flange bullet bolts.  Ron directed the crane with signals and I lowered the chain rigging to the Harp, it was connected and removed from the BL with the main hoist.  (I made the mistake of directing the rigging of the harp to the main 20T hoist, when in fact the 3T Aux hoist should have been used, as the main hoist can't reach to the vacuum / storage pit on the west side of the hall.)

Danka performed several swipes and measurements of the Harp after removal.  Alpha contamination was discovered on the bottom of the Harp flange.

Ron and Scott installed the blank-off flange, then I called operations to indicate that pumping should start.

Ron and Scott retrieved the vacuum test flask jig / support structure from the West storage pit and brought it down to the pre-separator pit.  I lowered the Harp into this flask jig, and Scott used the side-wall location bolts from the top of the harp assembly to fasten the flanges of the Harp and the jig.

I had trouble at first activating the Aux hoist but soon realized that it's necessary to press the Aux pendant "ON" button down for several seconds before the power actually turns on to this hoist.

We then removed the main hoist hook and attached the Aux hoist to the Harp / flask.  The assembly was transported to the West storage pit.

Some of the handrails had to be removed to facilitate initial movements of the Harp assembly.  These handrails should be replaced tomorrow morning.

Scott also submitted a Work Order for a back-up blank-off today, job number 40303.

The pre-separator blocks have NOT been replaced yet, we will do this tomorrow morning.

It was a busy day, thanks to all for their efforts and for staying a bit late to get the blank-off installed.

Best regards,

Grant

The pre-separator-area blocks were replaced today by Bevan and Travis, with Grant present for photos and observation.

Photos are attached of each block replacement.

Some difficulty was encountered in replacing the "Layer #3" blocks (photo 9 attached).  An interference occurred between the outside of the west "Layer #3" block and an aluminum channel directly beside the rubber pad that supports the block.  The block was initially resting on this channel but slipped off, breaking off some concrete at the edge.   See photo 12 attached and notice crumbled concrete inside this channel around the area where the interference occurred. Photo 14 shows the damaged block edge.

It should be noted that when these two blocks are resting flat, there should be a gap between them (i.e. they should NOT be touching as shown in photo 9).

as measured today in the electrical room by David and Anders

with TM4 in ITW as measured today in the electrical room by David and Anders.

with TM4 in ITW as measured today in the electrical room by David and Anders.

TM3 has been disconnected this morning and  purged all HV water lines. I found the power plug for all turbo pump fans wasnt connected  during the last run. That maybe the one of the reason on that ITE TP3 failure.

I installed 8 new bolts(3/8-16 UNC x1.25  STL) on the ITE TP3. The ITE TP3 replacement job is done. Everything is connected back to the pump. and it is ready for starting.

TM#4 with UC#8 has been moved from the south hot cell to the east target station.

I connected TM4 in ITE. All turbo pumps have been started and wok fine including new TP3. Everything is good so far.

I moved 5 shielding blocks to ITE. The ITE is configured to take proton beam.