Spent SiC#34 was moved on the 3rd of November and  placed in the spent target vault. See attached pdf for details.

David Wang and I accessed the NHC today to check if the proposed duct routing (IRH1618) will interfere with servicing or replacement of the TCS turbo pump.  A piece of plywood was placed in the future position of the NHC/TCS partition wall (IRH1609), and a ducting elbow was placed at the approximate position of the nearest elbow to the turbo pump.

David concluded that the ducting in the proposed location will not have any significant effect on replacement of the turbo pump, and he does not expect replacement will be difficult to perform after installation of the wall and NHC ducting.  Standing at floor level towards the east side of the TCS space and reaching upwards seemed to be the best way to reach the turbo pump flange bolts.  It was also noted that there was sufficient room in the TCS space for two workers to be in the area.

TCS will be vented tomorrow morning for TM2 moving.

On November 24th 2016 the spent SiC#35 was moved from the south hot cell to the spent target vault. see attached pdf for details.

 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.

TCS TP1S has been started.

2017-01-23 afternoon: Stopped TP1S. We will use TCS to take TM2 tomorrow afternoon.

 The new ducting section connecting the existing duct termination in the TCS space to the NHC partition wall has been installed by Smith Sheet Metal contractors.  The installation drawing is IRH1618.  There was not enough clearance between the duct pipe and the TCS vessel to butt weld the new ductwork as originally intended.  Instead a flange was welded to the existing pipe and also to the new section and the two were bolted together.  Drawings of the modifications have been provided by the contractor, and as-built drawings will be completed at a later date.  There was not time for the contractor to fabricate a gasket for the flanged joint, so one will be installed by TRIUMF at a later date and included in the as-built drawing package.

 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.

Updated target hall schedule for 2017 winter shut down. See attachments 1,2

Update schedule after Febiad beam schedule changed to ITE. See attachments 3,4

On Thursday, January 26th UCx#18 and Ta#50 were inspected and packaged into spent target pails, move to storage vault.

Update 2017 winter shut down target hall schedule. See attachments

ITW has been cleaned up today.  All station are vacuum cleaned. I wiped all HV cover and HV area including conductors and insulators. The black foams which are used to wrap around TP back up line are degrading now. I removed most of these foams. Also, Some obsolete  water lines  are moved our of station. All waste are bagged . they will be surveyed and  stored(or disposed) according to radio-active level.

 Lead gasket IRH1633 was installed today according to assembly drawing IRH1618 Rev B.

Target module window  cooling lines at TCS has been modified to use spare 2 channel in TCS: WFB1. The old cooling lines used a spare channel in TCS WFB2(HVC channel) are removed and capped. After change, TCS window cooling lines will be interlocked with heaters. The test run on new lines are good. No leak  on all fittings, and signals on flow and temperature are good.   Control people will be noticed on this change for their following up job.

 The North Hot Cell shielding window gaskets have been changed and the window has been filled with new oil.  Although there was no noticeable oil leaks before starting the job, the gaskets had not been changed since initial installation approximately 15 years ago, so they were done now as part of construction of the new  cell.  The work took place between January 26 – Feb 8, 2017 following the attached PDF “Full procedure for NHC shielding window gasket change” which references “Gasket change procedure from Hot Cell Services” (also attached).

To drain the window a 1/2”polyethylene hose was attached to the drain line using  a Swagelok fitting and routed into a 55 gallon drum.  A vent valve on the expansion tank was opened to allow air to enter  the window.  It took approximately 5 hours to drain the window using this method.  Approximately 50 US gallons were drained from the window, agreeing with the amount specified on Hot Cell Services drawing #96173-100 (attached).

After draining, the window was purged with helium then pressurized to approximately 13” WC with helium.  A pressure drop of 0.6” WC was observed over a 2 hour period.  While pressurized, a Varian G8601-60001 leak detector was  used to sniff for helium around the perimeter of the gaskets on both the hot and cold  sides – no helium leaks detected.  A small leak was found on the pressure gauge used to monitor helium pressure.

The cold side cover panel assembly was  then removed  following the HCS procedure.  From HCS Drawing #96173-100, the weight  of the cold side glass cover panel was estimated to be  approximately 50lbs.  The guide  pins used were McMaster-Carr PN# 93460A385.  The trim frame could be easily removed, however the glass panel was stuck to the window housing.  A putty knife and isopropyl alcohol were used to cut through the gasket to separate the window from the housing.  The alcohol did not damage the paint of the housing – acetone was also tested on a small area and did not cause damage  to the paint.  Two suction cup handles were used to transport the glass panel, and it was easily lifted by two people.  Various methods were attempted to remove old gasket material and gasket adhesive  from the trim frame and housing surfaces – the most successful was using a razor blade scraper to remove the majority of the material, followed by an acetone wipe to remove the remainder of the stuck-on gasket adhesive.  The panel was reinstalled with new gaskets following the attached  procedures - no issues encountered.  After torqueing the trim frame bolts the window was leak checked as before.  A drop of 0.8” WC was observed over two hours, and no helium could be detected around  the perimeter of the new cold side gasket.

The hot side cover panel assembly was changed using the same method as for the cold side.  The glass panel was estimated to be 150lbs.  A small amount of oil (< 0.5 L) remained behind the hot side glass panel after draining which spilled out after removal of the glass. Four suction cup handles were used, and four people were required to remove and reinstall the panel.  After installation the leak check was repeated with a drop of 0.3” WC observed over two hours, and no helium detectable around the perimeter of the hot side gasket.

The replacement gaskets were ordered from Hot Cell Services under PO# 3033973 matching the material and sizes specified on  HCS drawing #96173-100.

The window was filled with Drakeol 10B LT MIN OIL NF, Product  code: PEN1550-00-C-DR, PO #3034657.  The window was filled by lifting the drum onto the walkway leading  to the target hall entrance, and siphoning the oil out of the drum with a 1/2” polyethylene tube connected to the drain fitting, and an air vent open on the expansion tank.  Oil was added until the expansion tank was approximately 80% full.

After filling was complete, the cold side housing was repainted using Macropoxy 646 epoxy paint, 4019 Flint Gray.  When the inside of the NHC is next accessible the hot side trim frame bolts will be re-painted to protect the bare metal exposed from removing and reinstalling them.

Note that a quote for $74,313 ($56,823 USD) (PDF attached) was received from Hot Cell Services for them to do this job.  We were able to  successfully complete this ourselves with approximately $4500 required for the gaskets, $200 for other materials, and roughly 8 FTE days of work.

TCS:TK2 , Water has been refilled to 28.5" level. It was 15.1". Fall protection equipment  are used during the job.

Aaron and I completed assembling (re-assembling) the clean spare on Tuesday, February 14th to assist in determining a procedure for replacement of the 'Z' motion cable on the south hot cell manipulators.

The anchor point in the slave end of the clean manipulator could not be found as the manipulator stand is too low and does not allow full extension of the slave end.

Did some poking around on the in-situ manipulator in the south cell and was able to find the anchor point viewing it with the in cell camera (see blurry attached photo).

Was able to then find reference to the "cable clamp" in the parts list and drawing for the slave end. Also, confirmed there is not a procedure in the manual for a CABLE 'Z' motion system as we have, only a tape driven system. The procedure should however be very similar safe this mystery anchor point I discovered today and how readily this anchor point can be worked in.

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.  Metal shims between the cell walls and roof were cut away where they protruded into the cell.  Loose steel cylinders between SHC and NHC spaces were fixed in place using epoxy filler. Epoxy or polyurethane fillers were used to fill all gaps, cracks, holes, etc, as detailed below.  Foam backer rod and polyurethane filler were used to seal all large wall-to-wall and ceiling-to-wall gaps.  An approximate 2cm radius rounded corner was formed at all wall-to-wall and floor-to-wall corners using polyurethane sealant.  The interior of the tool-port, personnel access hatch, as well as the north roof hatch were also re-finished with the same procedure.  After all sealing and finishing work the surfaces were coated with "Mill White"  Macropoxy 646 Fast Cure Epoxy Paint as per manufacturer instructions.  Note:  this paint is recommended by the manufacturer for nuclear applications and has been tested for decontaminability:  99% water wash; 95% overall as per ASTM D4256/ANSI N 5.12 as well as for radiation tolerance:  Passed ASTM D4082 / ANSI 5.12 with a 525 micron thick coating.

The following products were used as described (data sheets attached):

Sanitile 120 Universal Acrylic Primer - 50-75 micron dry film thickness coat applied over all existing ceiling, walls, and floor surfaces after preparation by sanding

Sika Duochem 8107 Epoxy Paste - Used for filling voids and cracks in concrete surfaces

Sikaflex 291 Polyurethane Elastomeric Adhesive and Sealant - used for caulking joints and cracks in the concrete walls and aluminum panel wall and for creating radiused corners in wall-to-wall and wall-to-floor corners

Macropoxy 646 Fast Cure Epoxy Paint - 4 coats applied on all surfaces using rollers or brushes to create a total thickness of 525 microns as per data sheet

Aaron and I successfully completed a run through on the procedure to replace the 'Z' motion cable. I will be writing up the procedure for review and we will be performing more run through-s for practice before the actual job.

 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.