 Monday, April 03, 2023, 07:55, chad fisher, North Hot-Cell, Standard Operation, , , NHC, SHC field check
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NHC is 1.26 mSv/h inside approximately .5m from table surface, between manipulators
SHC 186 uSv/h inside approximately .5m from table surface and between manipulaotrs |
Friday, December 09, 2016, 14:58, Isaac Earle, North Hot-Cell, Development, , , NHC service area floor and top of roof block painted 
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The concrete floor in the North Hot Cell service area and the top of the NHC roof block in the target hall have been painted with Macropoxy 646
oil based epoxy paint, colour Flint Grey. Two coats were used for the NHC roof, and one for the service area floor.
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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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Thursday, March 02, 2017, 15:02, Isaac Earle, North Hot-Cell, Development, , , NHC roughing filter installed
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The roughing filter assembly (RFM0001D) has been installed at the ventilation exhaust hole on the NHC partition wall. The filter used is
Model # 332-528-002 supplied by BGE Service & Supply Ltd (see PO # TR123998). Installation and removal of the filter using the manipulators will
be tested after they have been installed. |
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Thursday, May 11, 2017, 16:10, Isaac Earle, North Hot-Cell, Development, , , NHC roof block to TH north wall gap sealed
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The gap between the north face of the NHC roof block and the target hall north wall in the area where the NHC inlet ducting will be installed has
been sealed with Sikaflex 1a flexible polyurethane sealant applied over foam backer-rod. |
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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, May 02, 2017, 09:48, Isaac Earle, North Hot-Cell, Development, , , NHC polycarbonate window cover panel installed
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The window cover panel has been installed on the hot side of the NHC shielding window according to drawing IRH1638. It was necessary to drill
and tap a hole in the steel frame first to achieve proper grounding for stud welding. The strength of all studs were checked by installing a nut
on the stud tightened against a block up against the steel frame, which was then torqued to a minimum of 10 ft*lbs. For the final installation the |
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Wednesday, January 18, 2017, 11:53, Isaac Earle, North Hot-Cell, Development, , , NHC partition wall installation complete
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The final panels of the partition wall were installed today as per drawing IRH1609. Sealing, finishing, and painting of the NHC walls and
floor can now commence.
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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, June 23, 2017, 17:28, Isaac Earle, North Hot-Cell, Development, , , NHC module flange and cameras installed
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The North Hot Cell module support flange (IRH1152D) was installed on June 21, 2017 using 1/8" rubber sheet as a sealing gasket. The
rubber was glued at the seams with Loctite 495 instant adhesive. Cameras with all required wiring and connectors were installed on the mounting bars
(IGN0325D) and then aligned to provide the same view as at other module installation locations in the target hall. A cable with 5 video signals, |
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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, 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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Friday, February 24, 2017, 15:12, Isaac Earle, North Hot-Cell, Development, , , NHC interior walls/floor/ceiling re-finished, sealed, and painted 8x
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The North Hot Cell interior walls, floor, and ceiling were re-finished, sealed, and painted by Omni Coating from Feb 6 - 17 under PO #3036471. This
job required 2-3 people for 4-6 hours per day over the 2 week period. First the existing surfaces were ground and/or sanded to remove existing coatings
and protrusions/sharp edges. This was followed by a coat of primer to highlight uneven surfaces and improve adhesion of following fillers and coatings. |
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Thursday, June 15, 2017, 11:29, Isaac Earle, North Hot-Cell, Development, , , NHC inlet ducting installed
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The North Hot Cell inlet ducting assembly was installed today in the target hall at the north end of the NHC roof block. A small section of the
perforated aluminum sheet on the TCS cage had to be trimmed for the assembly to fit (see IMG_0214). At each end of the assembly it was fastened to
the roof structure using a 1/4"-20 tapped hole in the steel roof, and a 1/4"-20 anchor in the north wall of the target hall. The base flange |
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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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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, March 04, 2021, 16:30, Isaac Earle, North Hot-Cell, Development, , , NHC gas delivery lines leak checked
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The North Hot Cell gas delivery lines (labeled 1, 2, and 3 on the hot and cold side panels) were leak checked today. 5psi helium gas was
applied to each line in turn with the appropriate solenoid valve opened and a Staubli connector with plastic tubing and the leak check wand attached to
the matching connector inside the cell. The end of the wand was sealed using tape. The Agilent G8601 leak detector was used on "sniffing" |
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Tuesday, February 28, 2017, 17:51, Isaac Earle, North Hot-Cell, Development, , , NHC flanged ducting connection sealed
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The North Hot Cell ducting (IRH1617) has been sealed with a bead of Sikaflex 1a polyurethane construction sealant where the flanged connection
bolts to the NHC/TCS partition wall. When this sealant shows signs of aging it may be cut away and re-applied without unbolting the flange.
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Tuesday, April 11, 2023, 11:35, chad fisher, North Hot-Cell, Standard Operation, , , NHC fields post sample removal
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The fields in the NHC after removal of Ferran's graphite sample is 238 uSv/h. This again seems to emanate for the items in the 5 gal pail...the copper
tubing from the beam window or, as I mentioned in my previous elog, the peek samples. I did ask about removing these during the graphite sample removal
but was told they were not "hot". |
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