| Work Permit | Date | Description | alog/status |
| 6536.html | 03/22/17 11:46 AM | Measure ASC sensing matrix at POP WFS | |
| 6535.html | 03/22/17 08:54 AM | Secure the TCS Safety Interlock box on top of the TCS rack in the mechanical room. Work might require the TCS 24V power supply to be powered down, to allow dressing of power cables. | |
| 6534.html | 03/22/17 08:54 AM | Investigate some authentication problems in the remote access control system. May restart the system. See https://services.ligo-la.caltech.edu/FRS/show_bug.cgi?id=7677 | |
| 6533.html | 03/21/17 01:28 PM | Power off HWSY SLED. | 34976 |
| 6532.html | 03/21/17 12:03 PM | Install a new version of gds software. The only change is foton, writing gain coefficients with a different precision. | 34979 |
| 6531.html | 03/21/17 10:11 AM | Lead two others through the LVEA on a tour. (VIP visit) | |
| 6530.html | 03/21/17 08:33 AM | Make sure iris is fully open on both IR camera lenses. This can be done without opening the enclosure with the lens controller. | 34977 |
| 6529.html | 03/20/17 10:47 AM | Injections similar to those described in alog 34623 at lower frequencies (HAM1+HAM6). Tamper injections in corner station to localize coupling location. Possibly other tests including looking at downconverion in IPSs and OMC fringe wrapping. | |
| 6528.html | 03/20/17 09:02 AM | Remove faulty HFW card from h1hfwsmsr server | |
| 6527.html | 03/19/17 09:36 PM | Access to pcal system and camera to take pictures and possibly move the pcal beams | 34980 |
| 6526.html | 03/17/17 02:06 PM | Potentially (undecided if we will perform this work at all), fire up the electrolytic welder which is part of the fiber welding set of equipment, in order to do some flame polishing of COC ears which have blemishes. Angus has used such equipment so we will be learning how to use it, or will just use it while he visits for these 2 days. Work will take place in fiber lab in LSB. We've already spoken to Bubba regarding the safety of this task - he will look it over with us on Monday when/if we start. | |
| 6525.html | 03/17/17 08:19 AM | Turn off the HWSSX SLED (via medm button) during lock loss. Leave off until instructed to turn it back on. This is for Aidan to make a measurement to compare with latest set in alog 34853. | |
| 6524.html | 03/15/17 11:49 AM | Briefly run the fire protection pumps to test the new alarm system being installed. I will alert the control room operator when we start and stop the pumps. | |
| previous Work Permits | |||
| 6489.html | 2017-02-16 16:35 | Fix tconvert on Debian 8 workstations, as it is now, it cannot convert dates of the form "Oct 15 2016 12:34:56 UTC" when the month is Oct. Every other month works. | 34966 |