 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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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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Wednesday, July 06, 2016, 13:31, Isaac Earle, Other, Other, Active Sump, Active Sump RCR Lab and MCR Alarms Not Working - Suspect Controls Issue
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Further tests were done on the active sump high level float switch today. The switch was triggered 1 time by filling the sump, and approximately
8 times by tilting the sensor manually. A local alarm sounded in the hot cell lab each time, but only one time in the RCR Lab and MCR (this occurred
on the final trial). Fault report #9099 has been submitted to Controls Group. Although the existing float sensor did cause a local alarm when |
Thursday, September 08, 2016, 17:26, Isaac Earle, Development, Other, Active Sump, New Active Sump High Level Switch and Electronics Installed 
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To address the deficiencies identified in E-Logs #204 and #205 the old active sump high level switch was replaced with Omega LV164SS model (316SS stem
and float, 4' length, standard mount) using adaptor flange TRH1316 to mount to the top flange of the sump. A new electrical box was also installed
(circuit diagram attached in PDF format). The circuit was designed by Don Jackson and wired by Travis Cave. Connection to the RCR Lab PLC was |
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Wednesday, March 15, 2017, 16:13, Isaac Earle, Standard Operation, Other, Active Sump, Meson Hall Hot Cell Lab Active Sump Water Released
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On March 13th in the morning the Meson Hall Hot Cell Lab active sump reached the high level sensor. The system responded as expected: high
level panel warning light illuminated, siren sounded, and MCR notified via "B1 RCR1 RM6 WARN". A 1L sample was delivered to RPG for analysis.
After approval, the sump was pumped out over the following two days. The procedure in Document #64834 was followed for sampling and pump-out. |
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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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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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Monday, August 22, 2022, 09:01, Adam Newsome, Standard Operation, Other, Active Sump, Active Sump Draining
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On Aug. 18, 2022, Operations informed RH group that an alarm activated for the full status of the MHESA B1 RCR1 Lab holding tank. Additionally another
alarm was reported in the RH control room regarding the RH sump full (Southwest Meson Hall Extension - Remote Handling area). However, there is an alarm
signal for the RH sump that was seen as OK at the MHESA Lab HMI. |
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Tuesday, January 03, 2023, 07:42, Adam Newsome, Other, Other, Active Sump, Active Sump - Level Check
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| The sump level was checked by Robin Swanson on Dec. 31, 2022. It was essentially empty - see attached photo. |
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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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Tuesday, January 17, 2023, 13:46, Adam Newsome, Maintenance, Other, Active Sump, Filter Change: RH Active Sump and BL1A Holding Tank Drain Output
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The CUNO filters were changed 2023-01-17 for:
BL1A Holding Tank drain output, adjacent to the pump
RH Active Sump, adjacent to the V2 valve
Both of
these filters are in-line with the drainage lines from the BL1A holding tank to the active sump. It was suspected that they have not been changed in many |
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Tuesday, January 17, 2023, 13:49, Adam Newsome, Repair, Other, Active Sump, Active Sump - Valve V6 Leaking
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It was noticed today (2023-01-17) that the valve V6, used in draining the BL1A Holding Tank to the Active Sump, was leaky. This valve should be replaced
as soon as possible. It has been added to the MS
Planner maintenance tasks list. |
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Tuesday, October 17, 2023, 10:16, Eric Lahe, Maintenance, Other, Active Sump, Testing the Remote Handling Lab Active Sump Level Sensor
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The level sensor for the active sump in the RH lab was tested.
The level sensor is working properly and is operational.
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Thursday, August 22, 2024, 15:16, Adam Newsome, Standard Operation, Other, Active Sump, Active sump filled ~600L with grey water from RCR1 sump replacement
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During a replacement of the RCR1 active sump (mechanical services group), approximately 600L of non-active grey water was released into the RH active
sump. At this time, this should be all of the water in the RH sump (approximately 600L total). |
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Monday, September 09, 2024, 16:31, Albert Kong, Standard Operation, Other, Active Sump, Active Sump High Level Sensor Testing
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The active sump high level sensor was tested and correctly alarmed locally. However the alarm in the MHESA RCR lab did not make any sound and no notification
was recieved at the main control room. After some investigation, it is believed that the RCR lab alarm 'had already produced a notification at the control
room and so no new notification was produced by testing the remote handling sump. Alternatively, the RCR sump alarm may have been silenced in the control |
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Wednesday, June 29, 2011, 15:27, John Wong, , , , test
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| blah blah blah.... |
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