David installed the new ball valve and connections for the SAS project module move ventilation. SASP0482. Drawing reference ISK5029B.

 The NHC module port shield block (IRH1645) and the TCS vessel shield block (IRH1646) were installed yesterday in the target hall according to assembly drawing IRH1652.  No issues were encountered during installation.  Vacuum was pulled on the TCS and a leak check was performed on the shield: no leaks found.

The 4" PVC drain line in the ISAC-1 active sump was modified so that the drain pipe terminates below the low level water line of the automatic pump-out system.  This will prevent backflow of sump gasses into the SHC, NHC, or TCS space if the air pressure in any of those rooms are lower than the sump air pressure.  The details of the modification were specified by Mechanical Services Group, and the work was done by Paul Jensen.  This system is defined in drawing IAM19183.

 HV was brought up to 70 kV for 1 h without sparks to test the new water installation.

ITW is configured to take proton beam.

TCS  cooling polyurethane lines have been re-routed to solve to HV sparking issue on old configuration between lines and bais plate.  New re-routed system is tested to 70KV without spark. No leak has been found on new lines after the test.

ECO 4369, drawings and models IRH1715, IRH1716 have been issued and released for this job. Drawings and Models are located in PDM-ISAC1 -TCS polyurethane water lines re-route folder.

Spare source tray build continued.

Initial alignment check in the morning:

- Target mounting plate target: Horizontal: .002, Vertical: -.002

- Ground electrode (bore) target, with un-clamped target: H 0.0 V -.003

- Ground electrode target (with target clamped): H: 0.0, V: .010

@14:10: sighting Master target position WRT sighting axis, calculated using the edges of the brunson target center circle edges calculated to center. Target circle is .02" in diameter.

- Master target mounted with slight finger torque.

- Front of master target, H .002 V -.002

- Rear of master target, H: 0.0 V: .005 (circle target is .020" in diameter)

- Rear of ground electrode target, H: .002, V: 0.011

@14:49: Replace mount plate target.

- Target mounting plate target: H -.001, V .001

- Ground electrode target: H .002, V .011 (rear target was rotated 90 deg from in the morning as a check)

@15:21 Steerer cone re-alignment.

- Undid the six screws holding the steerer cone and steerers to the aluminum flange and adjusted cone tip to RIB axis. The ground electrode bore was deemed not to be adjustable to the RIB axis with the current build order.

*Steerer cone assembly torque is 23 in-lbs

- Steerer cone target, H: .001, V: 0.0

- Steerer cone target, H: .002, V: .002 (after rotating target 180 degrees)

@15:30 Replaced target mounting plate target.

- Mounting plate target, H: .001, V: -0.001


Will go ahead and finish mounting components to mounting plate and final check the alignment after.

 Field measurements were taken of the old source trays. The old TM#2 source tray had a minimum field value of 0.50 mSv/hr and a maximum of 1.18 mSv/hr through 360 deg of rotation. The box was rotated around three times and put back in the vault. TM#1 old source tray was also removed and measured as well the field values for it were a minimum of 0.52 mSv/hr and a maximum of 1.15 mSv/hr through 360 deg of rotation. The box was rotated around three times and placed back in the vault. In both cases the box was roughly one metre from the radiation monitor.   

Source tray is complete for brazing, gas line bracket is currently missing but can be made in parallel with tube bending operations.

Source tray water lines to be fabricated according to ITA6144 drawing set.

- Alignment between target mounting plate and steerer cone is holding within .002"

- Aluminum soldering jigs are installed in place of the ceramics with fasteners only torqued just past "finger tight".

Source tray meggered today by Anders and Keith

GND - MSP OL @ 1000V
MSP - EE OL @ 1000V
EE - GND OL @ 1000V
4x Steerers - GND OL @ 500V

Steerer continuity verified from socket to steerer plates
(looking in the direction of the RIB, labeled top to bottom on sockets)

1 - Top
2 - Left
3 - Right
4 - Bottom

 Two minor chips in the main 60 kV insulators on the source tray was inspected today by Anders, Tom and Aurelia. The chips are small enough that they should not be a problem. See photos for details.

The spent UC#21 has been moved from the south hot cell to the spent target vault. See attached for details

SiC#30,ZrC#7,Ta#44,TiC#4, and Ta#41 have been moved from the spent target storage to the mini storage. See attached PDF for details of the orders of the pails in the mini vault.

 After extensive troubleshooting the communication fiber was found to be damaged and has been replaced by Gelo.

 The spent Ta#54 target has been moved from the south hot cell to the spent target vault. It was placed in Pail #157 and put in spot #5B of the vault.

Shielding plug is installed onto TCS. TCS is being pumped down to keep it under vacuum for the rest of the year.

Pete Dudley, manipulator service technician from CRL, was on site from Nov 27-30 to service the NHC Model N manipulators (See E-log entry #1578 for background).

He began by evaluating the motion selection and electric drive of the manipulator installed on the blue service cart.  This manipulator had chip A0166R01, same as the right side manipulator which had the failure described in E-Log 1578.  Pete noted that the arm was very slow to switch between the different drive directions, and had a significant lag between when the switch for motion was released, and when the motor actually stopped driving.  This was the case with all directions.  Because of this, he suspected that the right arm Z tape broke because when the manipulator reached the switch at the end of travel, the motor did not stop quickly enough causing over tension and snapping the tape.  A newer chip, A0166R04, was removed from the spare master arm (received Spring 2017), and installed into the master arm on the blue cart.  The test was repeated, and this time the motion selection and drive worked as expected.  The situation which previously caused failure was evaluated:  slave end fully extended in Z, master end fully collapsed in Z.  In this configuration the arm was moved back and forth in the Y direction.  No tape failure occurred, and the Z motion tape tension seemed normal.  Y motion drive was attempted, and was not possible, as expected.  This test was repeated in the opposite configuration (slave end fully collapsed, master end fully extended) with the same results.  Full drive speed was used for all tests.

The right side slave arm (with broken Z tape) was then removed and transported to the HCSA.  Using the bench mounted locking plate, the broken Z tape was replaced, and a full inspection and cable/tape tensioning was performed.  Pete accidentally broke the Z tape on the right side master arm while investigating the failure, which was also replaced.

The other two slave arms were also both inspected, tensioned, and tested in the same way.  Then all three were each in turn installed to the master arm #9348 on the blue manipulator transport cart where all mechanical motions and drives were tested (except X, because mounted on cart), the failure situation described above was also tested for all three slave arms.

The left side manipulator was then installed into the wall.  It was necessary to remove the lead sheilding on the thru-tube and machine it down approximtaely 0.070" in order for the arm to fit into the wall tube.  After installation, the manipulator motions and drives were tested again including the X motion, and the failure scenario situation was also re-tested.  Chad used the left side manipulator to remove and re-install the pre-filter mounted on the west side partition wall.  He also confirmed that he could reach the east wall electrical outlets and the outlets, gas fittings in front of the window.

The right side slave arm was adjusted so that the Y position was moved 1/2 turn of the shaft drive towards the window (this is the maximum adjustment possible before it hits a hard stop).  This was done so that the operator can more easily reach the outlets and air/gas connections inside the cell in front of the window.  Because both the master and slave ends protrude further out from the wall compared to the E-HD manipulators for the SHC, this modification makes the NHC manipulators feel a bit more like the SHC manipualtors for the operator.  After the adjustment, the right side slave arm was installed.  The left side slave arm was removed, adjusted the same as the right side, then reinstalled.  The spare slave arm was also adjusted in the same way.

The right side manipulator was evaluated through all mechanical motions.  We attempted to remove the A0166R04 chip from the left side, and install in the right in order to try the motion drives, however the pins had been damaged from the previous removal/install, and eventually one pin broke so this was abandoned.  CRL will ship us at least three new A0166R04 chips which should arrive in 2-3 weeks.

Upon completion of the work the location of the different arms is as follows:  Right side master #9351, Left side master #9348, Spare master #9763, Right side slave #9349, Left side slave #9764, Spare slave #9352

 Dakine is on site to do maintenance on the chiller. The tech requested the chiller to operate.

 The power to the crane and controls were turned off using the power switch in the Crane Control room.  The main disconnect switch in the target hall was not touched.

All site power will be off for a period of time during the Christmas break and this removes the crane from any issues when power is restored.

The target hall crane has been powered down by Don today in preparation for the power shutdown over the Holidays.