| Work Permit | Date | Description | alog/status |
| 6517.html | 3/7/17 13:45 | Bail tumbleweeds to allow access to Mid and End Stations on both arms. This will continue through today and tomorrow. | 34664 |
| 6516.html | 3/7/17 13:37 | Swap out existing controllers with modified controllers on VARIC transformers used to control temperatures in LVEA, Mid and End Stations. | |
| 6515.html | 3/6/17 15:40 | Mark and drill (9) ea. holes in LVEA floor, (4) ea. beneath CP1, (4) ea. beneath CP2 and (1) each near NW corner of BSC8 beneath iLIGO RGA. Requires the use of a hammer drill. Dust will be minimized by use of water, wet towels and portable HEPI filtered vacuum cleaner. | FRS Ticket 7456, |
| E1700073-v1, | |||
| Alog 34652 | |||
| 6514.html | 3/6/17 12:19 | Install new h1hfwsca0 Switch was configured (sw-msr-h1au) port 22 | 34645 |
| 6513.html | 3/6/17 9:54 | Replace the laser in the ITMy optical lever with one that has been thermally stabilized. This requires installation of the thermal stabilization cooler and armored fiber. I will have to briefly remove the cover of the oplev transmitter pylon for the fiber swap; the enclosure front panel, bellows and viewport cover will not be removed. The ITMy oplev has been involved in several hveto round wins, this work is an attempt to curb this issue. | 34646 |
| 6512.html | 3/6/17 9:48 | Increase power on ETMx and ETMy oplevs to attempt to decrease glitching. ETMx/y oplevs have been responsible for several hveto round wins due to glitching, this is an attempt to lessen that while I work on stabilizing replacement lasers for these oplevs. No viewports will be exposed during this work. | |
| 6511.html | 3/6/17 8:32 | Replace HWS BS beam dumps. Install GigE camera and pickoff mirror on HWSX. | 34643, 34649 |
| 6510.html | 3/2/17 5:33 | Inspect the PSL Chiller coolant lines with high intensity light looking for trapped air. Inspection will focus on the highest sections of the pipe runs, all downward turning elbows, and tees. | 34658 |
| 6509.html | 3/1/17 19:13 | SVN maintenance: “/ligo/www/www” working directory should be reverted from svn1.8 back to svn1.6. | |
| Previous W.P.s | |||
| 6361.html | 11/29/16 8:59 | Reconfigure power to the Vault equipment to provide +-12Vdc instead of just +12. Power up equipment and get signals to MidX | 34659 |