ITE water flow wheels and coils are replaced. Wheels and coils on Oven, Tube, HS, EE, MSP, Febiad coil, containment box window, dump, dump plug, 2A window, and tank return circuits are replaced with new parts.

In mid-2020 design analysis was completed on the steel plate & pin assemblies (ITA6550) used to connect the ISAC target hall crane hook block to the module lifting yoke assembly ITA0494.  The released design note is Document-184431.  

In November 2020 fabrication was completed on two full plate & pin assemblies (photos attached below).  As per the relevant ASME standards (identified in the design note), each assembly has been identified with serial numbers (#1 and #2).  Material test reports for the steel plate and round bar material used for fabrication are attached in PDF format.  For both materials the tested tensile yield strength (from the MTR) exceeds the value used in design calculations (from Document-184431):  117ksi vs 100ksi for the plate material;  138si vs 103ksi for the round bar material.

On February 8, 2021 both plate and pin assemblies were load tested by David Wang and Frank Song.  The total load applied to each was 31,400 lbs (as per the ISAC target hall crane load cell) which exceeds the 125% of rated capacity (31,250 lbs) required for the test.  The lifts were conducted successfully and no deformations or other damage to the assemblies were observed.  Photos of the load test are also attached.

Both plate & pin assemblies are now certified for use up to their rated capacity.  As specified on drawing ITA6550 and in Document-184431, a monthly visual inspection must be performed to check for structural deformation, cracks, excessive wear, and loose or missing fasteners.  In addition, an annual inspection must be performed to check for structural deformation, cracks, excessive wear, loose or missing fasteners, and missing or illegible markings or safety labels.  A written record of the annual inspection must be documented and kept readily available.

 The east entrance module is now back at the east target station.

 David and I re-connect Entrance module at ITE after the monitor been replaced at SHC. 

Frank and I removed Tm3 from TCS to SHC. The move is successful.

By Curtis. See Work Permit I2021-03-24-1 for details.

The crane pendant for the auxiliary hoist was upgraded to a FLEX EX2 style pendant by Canco Cranes. The installation work was performed by Canco, supervised by Tom Kauss and David Wang. Installation work was performed in one day (I2021-03-26-1).

Items installed include: new pendant (2 motion, 2 speed)

The existing antenna and receiver box located in the Target Hall were used.

The new system was tested by David Wang. Everything is reported to be in working condition.

Adrian and co installed a new T to be able to add an instrument loop for O2 and pH monitoring on the low conductivity water systtem (photo). See WP I2021-04-09-4

Travis assembled and tested the steerer wires March 31st (see attached)

On 2021-04-19, Frank and I remotely removed Tm3 from SHC to silo . The moving is successful.

On 2021- 04-20,  Tm4 is removed from Silo to SHC. The moving is smooth.

High active water system is refilled. Air are drained out of  system before pump to be started. Following sequence are used to bring the whole system back to operation:

1. close ITE , open ITW. Switch on the pump. Only 2A beam line related 5 water circuits are in loop in ITW.  Switch off pump when system pressure is stable above 100 psi.

2. Close ITW, open ITE. Switch on the pump. Only 2A beam line related 5 water circuits are in loop in ITE. Switch off pump when system pressure is stable above 100psi.

3. Open ITW, Open ITE. Switch on pump. both ITW and ITE beam line related water circuits are in loop.  Switch  off pump when system pressure is stable above 100psi.

4. Close ITE open ITW.  Bring ITW  target module water circuits back to loop by connecting bypass fittings on to circuits. Only bring one circuit back to system at first. Switch on pump. Wait for system pressure stabilized. Then Close ITW. bring next circuit back  to system.  Open ITW .  wait for pressure stabilized.  repeat the process until all water circuit and connected with bypass fittings in ITW.

5. Check possible leak on valves, fittings, and flow sensors in ITW pit.

6. Go to electrical room, check all ITW water signal status.

7. Close ITW, Open ITE. Repeat same procedure as step 4 on ITE target module water circuits.

8. Check possible leak on valves, fittings and flow sensors in ITE pit.

9. Go to electrical room, check all ITE water signal status.

10. Open ITW.  At this stage, full ITE station and half of ITW station water circuits are in operation.  Check possible leak on pumps, valves, fittings, gauges on water station at TH west end.

11. Keep system in operation. Watch on - tank level , system pressure, and conductivity on resin circuit and whole system.

Using SHC electrical test cables routed to to TH,  We tested TM4 steerer  4 polarities. At 100v megga test, left, right , up and down to ground are all OL. TM4 steerer has no short.

New steerer cables are installed in TM4. Cables are properly routed in containment box and service cap top. After job, TP2 is installed back onto module top.

 Friday, April 30, 2021, 14:06

Anders and Luca

Resistance measurements on each electrical feedthroughs (A,B,C,D,E,I,P,Q,R,U,60kV,ground) taken with no target or no short attached to the module. Results as expected:

P-Q = 6.439 mOhm

R-U = 6.019 mOhm

All other combinations = Open Loop

 Anders and I prepared ITE high voltage test in April 30 ( Friday morning), The MAA is locked for this.

Repack of 4 spent targets in TH and SHC.  SiC#37 to new pail249#. SiC#36 to new pail 250#. Nb#8 to new pail 247#, SiC#33 to new pail 248#.  They are all in mini storage. Also, UCx 31 are transferred to mini storage.  There are 5 spent targets in mini storage now.  

2021-05-20: 5 spent targets have been loaded into F308's. We transferred two more spent targets into mini storage this morning for next week loading.

 Myself and Isaac removed the boot from the left hot manipulator.

- opened the hatch in the TH to get access to the top of the boot

- released the latch on the boot and loosened the boot from above

- closed TH hatch

- with the right manipulator we were able to detach the rest of boot

This test proved that we can remove a boot from the manipulator without having to enter into the hotcell.

Due to the physical restraints that the boot causes for the operator, we have decided to not reattach the boot with its current design.

A new design will be investigated to allow the boot to be fixed without twisting, which is the source of the problems.

A contractor on site today for chiller maintenance. CP2 and CP3 circuit is leaking and shall not be used. CP1 can still be used. The contractor will contact Plant Group with a quote for repair and upgrades.

Tank refilled from 12 in to 25 in using the new valve.