 Monday, January 20, 2020, 16:07, Isaac Earle, Other, Other, Other, Second 55-gal drum moved to cyclotron east vault tunnel 
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The second (and final) 55 gallon drum containing active items from the Meson Hall East Hot Cell was transported today from the Warm Cell to the
Cyclotron East Vault Tunnel. The updated form is attached. |
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Wednesday, July 17, 2024, 15:05, Adam Newsome, Standard Operation, Other, Other, Safety Walkaround Complete - Meson Hall HC/WC Area
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A safety walkaround for July 2024 was completed by A. Kong.
Results can be found in the master
spreadsheet |
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Thursday, October 10, 2024, 12:24, Adam Newsome, Other, Other, Hot Cell, Safety Walkaround Complete - Meson Hall HC/WC Area
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A safety walkaround was completed for the Meson Hall Hot/Warm Cells.
The resulting spreadsheet can be found on DocuShare as Document-242733.
Main deficiencies identified: |
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Tuesday, December 20, 2011, 09:54, Isaac Earle, Maintenance, Target 1, Target, Replaced T1-MK1 Target Ladder
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Replaced T1-MK1 target ladder with the new ladder design which has an integrated upper slide plate (2 less sealing locations) and no c-seal grooves.
C-seals replaced with aliuminum delta seals.Transfered all target cassettes to new ladder in the same positions. Performed helium leak check
at interface with bellows flanges and all cassette locations. No leaks detected. |
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Thursday, January 12, 2012, 11:34, Isaac Earle, Maintenance, Target 2, Target, Replaced M20 Beam Blocker Vacuum Seal O-Rings
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Replaced M20 beam blocker vacuum seal o-rings. Old o-rings were noticeably harder, but not brittle or cracked. Applied "Haskel
Dry Air Seal" lubricant to air cylinder shafts and "Apiezon M Grease" to vacuum seal o-rings and main shaft. Took approximately 1
full days work. Total dose: 0.08mSv. |
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Thursday, March 02, 2023, 06:59, maicodallavalle, Maintenance, Target 1, Cooling, Refilled Expasion Tank
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| I have refilled the water package on T1 with DI water. The Expansion Tank is at 37cm. This may change when pump is turned on. |
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Thursday, March 02, 2023, 07:04, maicodallavalle, Maintenance, Target 2, Cooling, Refilled Expasion Tank
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| I have filled the water package on T2 with DI water. The expansion tank is at 38.1cm. This may change when the pump is turned on. |
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Friday, October 02, 2015, 17:25, Ron Kuramoto, Standard Operation, Target 1, Target, Raise Target to lower Rad levels for 1AM7 repair
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Today the T1MK2 target was moved from Position 4 to Position 0 to lower the Rad fields for the 1AM7 repair in the 1A Tunnel. The Rad levels were still
to high only dropping by 1000uSv/Hr to 5000uSv/Hr, so the 1AM7 repair is planned for next Tuesday's maintenance day on Oct 6th. 1A will be off till
then giving a longer cool down. |
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Friday, May 01, 2015, 16:01, Isaac Earle, Repair, Target 1, Other, RH Warm Cell Used by Beamlines Group for TNF Heat Exchanger Leak Check
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The Meson Hall RH Lab Warm Cell was used by Beamlines Group for hydrostatic testing of the TNF heat exchanger. The location was chosen because
of access to a water supply, active drain, and the heat exchanger has removable contamination. The work took place on April 30th and May 1, 2015.
New plastic sheet was placed over the 6 foot block in the center of the warm cell which was used as a work area. The plastic was removed after |
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Friday, April 22, 2016, 14:45, Isaac Earle, Other, Other, Active Sump, RH MH Hot Cell Lab Active Sump Water Released
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The Remote Handling Hot Cell Lab Active Sump has been released to city sewer following the procedure in Document-64834. The water was close to
the sump high limit switch (approximately 5800L). Before release the water was sampled, tested, and approved for release by RPG. The tritium
analysis form has been filled out and returned to RPG,. |
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Tuesday, June 28, 2016, 08:32, Isaac Earle, Other, Other, Active Sump, RH MH Hot Cell Lab Active Sump Overflow
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A call was received from the MCR at approximately 21:30 on Monday June 27th to report that active drains in the east end of the Meson Hall were
backing up and overflowing. I came in and found the leak coming from a broken spray nozzle in a sink in the rad waste area. The leak was stopped
at which point there were puddles between 1-2m diameter around the active sump top flange, the drain directly south of the warm cell water windows, and |
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Tuesday, June 28, 2016, 16:28, Isaac Earle, Other, Other, Active Sump, RH MH Hot Cell Lab Active Sump High Level Sensor Test
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The high level sensor for the Meson Hall Hot Cell Lab Active Sump was tested today and worked as expected. When the sensor is tilted (as
occurs when the water level rises above it) an audible alarm sounds in the hot cell lab, and the Safety Panel in the MCR also alarms with "MHESA B1
RCR1 RM 6 WARN" displaying NOT OK. This alarm sounds every 3 minutes in the MCR until the PLC outside of the RCR lab is reset. When the |
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Thursday, March 22, 2018, 17:24, Isaac Earle, Standard Operation, Other, Active Sump, RH Lab active sump released
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The RH Lab active sump level reached the high limit yesterday due to an overflow of the ultrasonic cleaner in the Rad Waste Area. The sump
was sampled by RPG, and after analysis the water was approved for release. The water was pumped out today. Local and MCR alarms functioned
as expected. |
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Friday, September 07, 2012, 16:39, Isaac Earle, Repair, Target 1, Target, RH Lab Crane Repaired
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The "west" button on the crane pendant was broken, and the crane would occasionally continue moving west when the button was released.
The button was replaced by a Gordon Crane technician, who also did a crane inspection. The hoist in the target flask is also due for an inspection,
but it was not possible to do it this visit. Neil Wong will try to have it done next time a crane technician is in. |
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Wednesday, April 14, 2021, 14:30, Isaac Earle, Standard Operation, Other, Active Sump, RH Lab Active Sump pumped out
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The RH Lab Active Sump reached the high level sensor at some point overnight before the April 8th work day. Maico Dalla Valle noticed the
alarm in the morning and notified RPG and myself. I also received a notification by e-mail from Vicky Hannemayer who had been contacted by Ops because
of the RCR alarm. |
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Thursday, November 22, 2012, 17:22, Isaac Earle, Standard Operation, Target 1, Active Sump, RH Lab Active Sump Released
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On Wednesday November 21 at approximately 9am the level of the Remote Handling active sump was inspected and found to be at approximately the 7000L
level. The high level alarm sounds at approximately 5800L. The high level alarm had been silenced by somebody, and RH staff had not been notified.
It is unknown when the high level alarm was reached. The total sump volume is 7200L (which if exceeded will cause active water to spill on |
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Wednesday, September 25, 2013, 14:05, Isaac Earle, Standard Operation, Target 1, Active Sump, RH Lab Active Sump Level Sensor Inspected
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A notification was received that the RH lab active sump level sensor is due for annual inspection. The sensor was tested and is working properly.
The water level was observed to be only a few inches below the sensor level. Ken Buckley was notified and someone from his group will sample
and drain the tank according to the procedure in Document-64834 |
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Tuesday, November 18, 2014, 10:52, Isaac Earle, Standard Operation, Target 1, Active Sump, RH Hot Cell Lab Active Sump Released
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Release of the Remote Handling Hot Cell Lab active sump water was completed today by
Hua Yang. During the procedure fields of up to 0.50 micro Sv/hr were measured around the newly installed filter housing. After completion the filter was removed and replaced. The filter measured 450cpm on the |
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Monday, September 28, 2015, 10:29, Isaac Earle, Standard Operation, Other, Active Sump, RH Hot Cell Lab Active Sump High Level Sensor Tested
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The RH hot cell lab active sump high level sensor was tested as part of the yearly scheduled inspection. High water level was simulated by
tilting the sensor sideways with a long pole sample scoop. The Main Control Room and Hua Yang from Nuclear Medicine were notified before the test.
The alarm sounded as expected, and a message was received in the main control room. This is a latching signal, so a Control Room operator will |
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Monday, January 16, 2023, 15:06, Adam Newsome, Repair, Other, Active Sump, RH Active Sump - draining flow rate sensor repair
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The flow rate sensor used to monitor the drain rate from BL1A holding tank to active sump, located in the active sump area, was repaired. The paddle
wheel, o-ring, and shaft were replaced. This part was significantly worn prior to replacement.
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