 Thursday, March 16, 2017, 10:32, David Wang, Spent Target Vault, Repair, TM4, , TM4 and its silo rust photos 13x
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| I watched rust on TM4 and its silo. Most of rust are on est side of module and silo. See attachments |
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Wednesday, March 15, 2017, 07:45, chad fisher, South Hot-Cell, Maintenance, , , South Hot Cell Fields
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I have moved the suspected "hot" items in the hot cell and placed them under some lead bricks. I have re-measured the fields and it has been
reducded to 90 uSv\h at the manipulator repair area and 110 uSv/h at the previous 1.82 mSv\h area. |
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Tuesday, March 14, 2017, 11:46, chad fisher, South Hot-Cell, Maintenance, , , 'Z' motion cable dry run
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| Did a dry run with the latest procedure with Dan Mcdonald. Elapsed time was approximately 30 min. |
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Tuesday, March 14, 2017, 07:34, chad fisher, South Hot-Cell, Maintenance, , , Hot Cell Fields
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I have re-measured the fields in the hot cell. Fields at shield door Al cover are 101 uSv\h, in cell at the east manipulator are 245 uSv\h, and the largest
field is 1.84 mSv\h...this appears to be the high current fasteners removed from the last target. |
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Friday, March 10, 2017, 09:19, chad fisher, South Hot-Cell, Standard Operation, , , South Hot Cell Field Measurements
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| The fields in the hot cell have been measured by means of a pole monitor through the tool port. Field was measured to be 25 uSv/h. |
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Wednesday, March 08, 2017, 14:09, David Wang, ITE, Maintenance, TM2, , ITE IG1S increasing.
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By retrieving data further, It has been found no directly relationship between IG1S surging and dump plug water opening. Vacuum surging is 10minutes
ahead dump water supply to circuit. SEE attachment 1. Also, The ITE IG1S start to behavior unusual in middle of Feburary. See attachment 2. Today,
ITE IG1S is still slowly climbing up. I decide to leak check ITE vacuum vessel. Before leak check, for more information and trouble shooting. I closed |
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Tuesday, March 07, 2017, 14:41, David Wang, ITE, Maintenance, , , ITE dump plug water circuit is closed for ITE IG1S small surge.
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It is closed @ 2:35PM by closing supply side valve first , the return side valve of ITE dump plug .
Opened ITE dump plug circuit valves @4:28PM. ITE IG1S still at 1XE-6. No change before and after of circuit closing and reopeneing. |
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Tuesday, March 07, 2017, 09:25, David Wang, ITW, Repair, , , ITW HALCW 2" return line ball valve seals replacement.
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Leaking seals on ITW HALCW 2" return line ball valve have been replaced. 8 liter waters are drained out for this job. Water are drained into a thick
plastic bag. The bag is tie strapped , labeled, and put into a yellow garbage bin in MAA. Water sample is given to RPG. After analyzing, RPG will
give instruction on how to deal with it. Since we just refilled NALCW to system before this job, the active level on sample is very low. We may dump them |
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Monday, March 06, 2017, 08:01, David Wang, Cooling, Repair, , , HALCW resin tank replacement. 11x
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HALCW resin tank has been replaced. The old tank is stored in middle-west silo now. The field on old resin tank bottom is about 3.5 msv/ hr(on contact).
By shielding it into silo and putting two lead blankets on the top cover of the silo,The general field 1 feet above this silo is 25usv/hr. And, The field
around the silo area are less affected. This old tank will stay there as long as possible. For the new resin tank during preparation, It was found |
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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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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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Monday, February 27, 2017, 14:23, chad fisher, South Hot-Cell, Repair, , , Manip. 'Z' motion cable run through
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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. |
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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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Wednesday, February 15, 2017, 12:07, chad fisher, South Hot-Cell, Maintenance, , , Manipulator 'Z' motion cable replacement preparation status
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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.
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Friday, February 10, 2017, 09:56, David Wang, Conditioning Station, Standard Operation, , , water has been refilled to TCS:TK2
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| TCS:TK2 , Water has been refilled to 28.5" level. It was 15.1". Fall protection equipment are used during the job. |
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Thursday, February 09, 2017, 14:07, Isaac Earle, North Hot-Cell, Development, , , North Hot Cell Shielding Window Gaskets Changed 23x
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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 |
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Thursday, February 09, 2017, 09:24, David Wang, Conditioning Station, Development, , , Target module window cooling lines at TCS.
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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 |
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Tuesday, February 07, 2017, 15:57, Isaac Earle, North Hot-Cell, Development, , , Ventilation Ducting Gasket Installed
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| Lead gasket IRH1633 was installed today according to assembly drawing IRH1618 Rev B. |
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Tuesday, February 07, 2017, 10:34, David Wang, ITW, Maintenance, , , ITW clean up
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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. |
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Friday, February 03, 2017, 11:49, David Wang, Conditioning Station, Standard Operation, , , Update 2017 winter shutdown TH schedule.
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| Update 2017 winter shut down target hall schedule. See attachments |
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