 Wednesday, August 09, 2017, 16:39, Isaac Earle, North Hot-Cell, Development, , , NHC drain line into sump identified
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The NHC drain line was tested by pouring approximately 10 gallons of water through the drain grate at the base of the NHC partition wall. Water
was seen a few minutes later pouring into the sump labeled "ACTIVE SUMP" from the light coloured pipe on the west side of the inside of the sump.
Rob Walker had previously said that the hot cells drain into the sump next to this one which is labeled "SANITARY SUMP", which appears |
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Tuesday, August 15, 2017, 12:10, Isaac Earle, North Hot-Cell, Development, , , ISAC Active Sump low water level measured
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The ISAC active sump in the Active Service Room (#002 on B2 level) was pumped out yesterday using the standard procedure (Section 5.5.2 of the ISAC Operators'
Manual, V1.0). The procedure makes use of the auto stop feature of the pump-out system which stops when a low level float switch is triggered. The
water level was measured after pumping stopped, and was found to be approximately 21" above the base of the sump. A new section of pipe will |
Thursday, August 17, 2017, 14:38, Isaac Earle, North Hot-Cell, Development, , , 4/6 NHC roof blocks installed 7x
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Roof blocks IRH1641, IRH1642, IRH1643, and IRH1644 have been fully assembled, labeled, and installed as per drawing IRH1652. Fabrication
of TCS shield block (IRH1646) and NHC module port block (IRH1645) is still in progress.
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Friday, October 06, 2017, 11:12, Isaac Earle, North Hot-Cell, Development, , , NHC module port shield block and TCS vessel shield block installed
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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. |
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Friday, October 06, 2017, 11:21, Isaac Earle, North Hot-Cell, Development, , , ISAC-1 active sump drain pipe modified
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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 |
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Friday, December 01, 2017, 16:42, Isaac Earle, North Hot-Cell, Repair, , , NHC manipulator service visit
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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 |
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Thursday, June 21, 2018, 17:15, Isaac Earle, North Hot-Cell, Development, , , Motorla CP200 radio with throat mic tested in NHC
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A Motorla CP200 portable two-way radio was tested today for use inside the ISAC hot cells. A High Technology Communications Throat microphone
PRO model from Planet Headset was used with the radio. Chad entered the NHC wearing the throat mic and radio under a air supplied hood to mimic real
world conditions. Communication was clear with the other person in the NHC service area, in the SHC service area, at various locations on the B1 |
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Thursday, July 19, 2018, 14:22, Isaac Earle, North Hot-Cell, Development, , , NHC diagnostic signals - connector and wiring details
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Installation of the diagnostic connections between the NHC hot and cold sides has been completed. The cable bundle was prepared by Travis Cave
in the electronics workshop with connectors attached at one end only. Metal fish tape was first ran through the conduit from the cold side to hot
side, the non-terminated end of the cable bundle was attached to the fish tape inside the cell, cable pulling lubricant was applied, then the cable bundle |
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Wednesday, August 01, 2018, 09:47, Isaac Earle, North Hot-Cell, Development, , , NHC diagnostic signals and control panel tested
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On July 30th the NHC diagnostic signals were tested:
- 9 pin CPC: a shorting plug was installed on the hot side - continuity check results were as expected
- 4 pin CPCs: snake camera installed in both hot side connectors with portable monitor on cold side - both connectors worked as expected |
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Wednesday, September 12, 2018, 15:22, Isaac Earle, North Hot-Cell, Development, , , NHC air and gas supply lines - test and leak check
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Testing was completed today on the NHC air and gas supply lines. For each line a Staubli plug was installed on the fitting inside the hot cell,
the line was charged with compressed air (50psi for gas lines #1, #2, and #3; 100psi for the air lines #4 and #5). All connections inside and
outside the cell were checked for leaks using Snoop including connections for the solenoid valves. No leaks were found. Correct operation of |
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Wednesday, September 12, 2018, 15:30, Isaac Earle, North Hot-Cell, Development, , , Installation of NHC operator-level lighting completed
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Installation of of operator-level lighting in the NHC was completed today according to drawing IRH1801. 2" x 2" Panduit was mounted
to the wall on aluminum brackets to support the power cables. These lights can be replaced remotely by unplugging the power cords using the manipulators,
lifting the cable out of the Panduit with a hooked pole tool through the manipulator slave end removal roof hatch, lifting the light fixture off the support |
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Thursday, September 13, 2018, 16:57, Isaac Earle, North Hot-Cell, Development, , , NHC grounding and mili-ohm testing
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The following equipment has been connected to the building ground located in the Target Hall by the TCS using 1/2"
flat bonding strap:
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Thursday, November 22, 2018, 14:38, Isaac Earle, North Hot-Cell, Development, , , NHC design approved by High Voltage Engineer
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To satisfy RS 101 from the NHC requirements specification (Document-131915) Tomislav Hurskovec was consulted regarding high voltage safety. After
a verbal discussion on various aspects of the NHC design he confirmed that the design satisfies high voltage safety concerns.
A copy of his confirmation e-mail is attached in PDF format. |
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Monday, December 10, 2018, 15:31, Isaac Earle, North Hot-Cell, Development, , , NHC remote connection testing with manipulators
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The following tests have been successfully completed using the NHC manipulators:
Ventilation pre-filter (mounted on the NHC/TCS partition wall) removed and re-installed using the manipulators
Electrical
plugs (two total) for operator-level LED lighting located on east wall of cell interior plugged in, and un-plugged using the manipulators
Electrical |
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Tuesday, December 18, 2018, 11:13, Isaac Earle, North Hot-Cell, Development, , , NHC manipulator slave-end swap, RH test, and various other work
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The following North Hot Cell work was completed over the last week under work permit I2018-12-12-1:
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Friday, January 04, 2019, 14:38, Isaac Earle, North Hot-Cell, Development, , , NHC cameras tested
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The NHC module support flange cameras (4 total) as well as the NHCSA camera were tested today and confirmed to be working properly. All cameras
were angled and focused properly, and displaying clearly on the monitors in the ISAC RH Control Room. Photos of the control room monitors are attached
below. |
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Friday, January 11, 2019, 13:59, Isaac Earle, Safe Module Parking, Development, , , SMP motor selection decision
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SMP drivetrain design work is currently underway. Alejandro has selected a suitable 1200:1 reducer which will give a vessel rotation speed of 0.21rpm
with a 1725rpm motor (deemed sufficiently close to the SHC rotation speed of 0.17rpm). The reducer however is only rated for 0.33hp, and Allon's
analysis recommended we use a motor of at least 0.4hp |
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Friday, January 18, 2019, 10:26, Isaac Earle, North Hot-Cell, Development, , , NHC sealing improvements and repeat of RH test for LED lights
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The following NHC development work was completed under WP I2019-01-09-4:
Location of RH feature on operator level LED lighting updated to match IRH1800 Rev B design
Remote Handling test of the
LED fixtures was repeated using a 9' pole with hook attachment through the manipulator slave hatch from the Target Hall: both LED fixtures were removed |
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Monday, January 21, 2019, 16:27, Isaac Earle, North Hot-Cell, Development, , , NHC in-cell camera wired to right side monitor
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The NHC right side monitor has been wired to display the signal from the in-cell camera. This was tested using a snake camera on both of
the CPC-4 connectors.
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Thursday, January 31, 2019, 14:16, Isaac Earle, North Hot-Cell, Development, , , NHC grounding approval
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Franco Mammarella was consulted regarding electrical grounding of the NHC design (RS103 of Document-131915). After discussing the design,
and having grounding inspected by Randy Boehm, Franco approved the design and advised that the grounding system should be inspected periodically.
This task has been added to the Remote Handling inspection index on an annual schedule. A PDF copy of the e-mail correspondence with Franco is attached. |
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