Approved work to be done:
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Cleaning and assessment of ETMY HR surface
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Replacement of EY ESD vacuum feethrough connector assembly
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P-Cal alignment
Thursday, Dec. 11
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1st cleaning of BSC10
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Move Clean Room (CR) into position for BSC10
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Vacuum rooftop of Clean Room
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Attach sock
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Start collecting supplies: FC, solvents (acetone), Green Lantern, Flashlights, PET contamination kit, ...
Friday, Dec 12
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2nd cleaning BSC10
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Turn on purge air for BSC10
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Make sure CR supplies are in place (gowns, change room, ...)
Monday, Dec 15
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Dust Monitors - verify operation
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make safe.snap files to save settings
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Follow M1300464-v4, "Procedure for preparing aLIGO IFO for pumpdown", Turn off high voltage
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Review and follow E1201035, "aLIGO Chamber Entry & Exit Procedures" checklist
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Review and follow M1100068-v1, "Hanford Checklist - BSC Door Removal", Review door removal procedure with crew
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AM
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Start vent on BSC10, estimate ~5 hours [Kyle and John]
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PM - follow E1201035
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Lock down HEPI
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Wipe down cleaning to ensure area is clean
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Remove door
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Document (photograph) entrance and assess for obstructions (hanging cables, loose wires, ...)
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Enter and secure ISI and SUS
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Follow E1400472-v3, "Test Mass In Situ Cleaning Procedure", continue on to Tuesday, Dec. 16. Note that First Contact cleaning is preferred and drag wiping is only to be used as a last resort (see procedure and flow chart in E1400472-v3). The only approved solvent for this cleaning work is acetone.
After Chamber Vent Following E1400430
1: Disconnect external (air side) ESD cable from feed thru.
2: Install flat surface with Vacuum Foil on it near Flange for a work
surface.
3: Remove ESD feed thru flange Gerardo
4: IF enough cable exist cut the cables from the connector on the inside.
IF not enough cable disconnect cable
disassemble connector then remove connector ends.
5: Crimp new pin on to cables.
6: Verify with SUS which pin is connected to which part of ESD.
7: Make up connector with new pins in proper order D1400177 V2
8: Secure new connector to new feed thru.
9: Install Flange on Vacuum chamber. Gerardo
10: Connect new external cabling to feed thru
11: Ensure no one is near optic!!! High Pot connector ~ 700V DC If it
doesn't pass. Stop and investigate.
12: Make up external cables to field current limiting resistor box.
Tuesday, Dec. 16
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AM
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Continue with ETMY cleaning as described in E1400472-v3. Note that First Contact cleaning is preferred and drag wiping is only to be used as a last resort (see procedure E070304 for drag wiping). The only approved solvent for this cleaning work is acetone.
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Meet with SYS and COC team members to assess.
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PM
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Perform spot cleaning on edge in attempt to understand First Contact edge contamination ring.
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Apply 2nd round of First Contact, cover, and allow to dry and cure over night.
Wednesday, Dec. 17
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AM
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Peel First Contact and assess the situation with SYS and COC
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PM
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Prepare to close WBSC10 EY as per E1201035, "aLIGO Chamber Entry & Exit Procedures" checklist
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Review and follow M1100068-v1, "Hanford Checklist - BSC Door Removal"
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Unlock ISI and Optic
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Verify optic is free
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Assuming all goes well, obtain approval and signatures for volume closure (M1300172).
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Notify door crew to hang door
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Verify readiness to pump down, follow M1300464-v4, "Procedure for preparing aLIGO IFO for pumpdown". Confirm all high voltages are off.
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Notify Vacuum crew of readiness to start pumps
The last step is at the time and discretion of the Vacuum crew.
Decision flow diagram from E1400472, drawing by D. Coyne