vernon.sandberg@LIGO.ORG - posted 11:10, Friday 12 May 2017 (36158)
Work Permit Summary for 2017 May 09 + post-Vent Follow Ups
| Work Permit | Date | Description | alog/status |
| 6637 | 5/12/2017 8:40 | The pirani gauge is not functioning properly and not allowing the Cold Cathode to turn on. We will force the Value of COLD_CATHODE_HIGH_LIMIT_TORR to 1 to allow the Cold cathode to turn on. This will be in place until we vent and can replace the guage. | |
| 6636 | 5/11/2017 13:18 | We will wrap GV7 actuator with fun mylar, spray He, and stroke the valve for thorough leak testing. This valve is currently soft closed from vent activities so we will monitor the volume's turbo pump closely and not leave unattended while GV7 is open. | |
| 6635 | 5/11/2017 12:30 | Remove RF Oscillator Source (24MHz) S1000581 for troubleshooting. Error with read back signals. | 36145 |
| 6634 | 5/11/2017 10:43 | Take pictures of the views from each viewport on HAM2. To do this requires the removal of one or more viewport cover at a time and illumination in the chamber to identify and take pictures of IO optics/baffles. All viewport covers will be restored at the end of the project. | |
| 6633 | 5/11/2017 8:55 | Switch to laser hazard in LVEA, in order to operate HWS sleds. | |
| 6632 | 5/10/2017 10:24 | Update MEDM screens to use python scripts pursuant to E1700056 | |
| 6631 | 5/10/2017 9:23 | Verify installed serial numbers of Photo diodes on the tables. LSC, WFS | |
| 6630 | 5/10/2017 8:50 | Decouple purge air from vertex volume, blow down, connect QDP80 roughing pump and start roughing down the vertex volume and leak check HAM4 north door, BSC3 west door and two conflats on HAM3 reducer that were removed. Verify high voltage supplies are off. | |
| 6629 | 5/10/2017 8:15 | Rebuild HWSY in-air table. Realign HWSX and HWSY to ITMs through SRC. Diagnostics on HWS systems with CO2 laser and RH. 36-hour RH tests. | |
| 6628 | 5/10/2017 7:42 | Reroute and untangle cables and plumbing under the PSL table in the enclosure. This will require the laser be down. | |
| 6627 | 5/9/2017 10:30 | connect leak checker to x-beam manifold and valve in main turbo pump. will valve out IP before spraying He. | |
| 6626 | 5/8/2017 16:46 | Crane over leak checker and He gas bottle in preparation for leak checking components on X-beam manifold. We may have detected a vacuum leak due to PT170 pressure rising (vs. PT180 on Y-beam manifold falling) after isolating volumes. Will connect the leak checker to X-beam manifold main turbo. | |
| 6625 | 5/8/2017 10:55 | Replace the ESD HV power supplies (±430V) for ITMX, ITMY and ETMX. Supplies for ETMY have already been replaced. See alog 3218. | 36143 |
| 6624 | 5/8/2017 8:32 | Disconnect cabling for the Hartmann table. Table will be moved to allow access to WHAM4 north door. Part of E1700124 vent procedure. | 36144 |
| 6623 | 5/8/2017 7:27 | Install new HVAC/Building controls at both end stations. | |
| 6622 | 5/8/2017 7:15 | Install Air Trap/Bleed (ECR #E1700096) in PSL Crystal Chiller return line. Will need the PSL to be down during the installation. | |
| 6621 | 5/8/2017 7:11 | Install filter supports in the PSL enclosure. This will mount the in-line canister filters vertically. | 36116 |
| 6620 | 5/5/2017 14:34 | Check HEPI Fluid System Accumulator Pressures: All ISIs & HEPIs Offline, spin done HEPI Pumps, check and charge Accums AR, reverse shutdown. Can do buildings separately. | |
| 6619 | 5/5/2017 14:29 | 1) Turn Kobelco on first thing Monday morning to warm it up for dry purge air. 2) Record vertex RGA scan. 3) Hard close GV 1,2 and soft close GV 5,7. 4) Isolate main ion pumps #1,2,3,4. 5) Verify turbo is isolated. 6) Isolate RGA. 7) Turn off cold cathode gauges. 8) Turn off HV supplies. 9) vent vertex (several hours). 10) Vent annulus volume on BSC3 door and HAM4 door. Doors will be removed Tuesday morning. | |
| 6618 | 5/5/2017 13:39 | Pursuant to ECR E1700123, I will remove the lasers for the HAM optical levers during the upcoming vent; there are currently 3 lasers in total (no laser in HAM3 oplev). It has been decided that these lasers are destined for 3IFO, so they will be placed into 3IFO storage with the rest of the 3IFO oplev equipment at Mid-X. No viewports will be exposed during this work. | |
| 6617 | 5/5/2017 13:26 | Add the Beckhoff MSR temperature channels to the cell phone alarm system, alarm if temps exceed 30C (86F). | |
| 6616 | 5/4/2017 13:23 | The ITMy oplev laser is showing signs of a failing laser diode (LHO alog 36024). As a preemptive emergency corrective maintenance while LLO is down I will swap this laser for a new one recently stabilized in the Pcal lab. No viewports will be exposed during this work. | |
| 6615 | 5/4/2017 10:28 | I would like to take some measurements with the end stations HWS. Before the power up, ALS beams need to be unshuttered with PZT2 YAW misaligned. Leave the shutters opened until a few minutes into full power. Then return to nominal configuration. | |
| 6614 | 5/1/2017 14:00 | Install a bug fix release of the 0.14.1 nds2-client software. I will also make this the default nds2-client on the workstations. This only applies to the debian 8 workstations in the control room. This is to fix a issue if a user was to use ligodv (the matlab precursor to ldvw). | |
| 6613 | 5/1/2017 12:54 | Give brief tour of LVEA/end station VEA to Fellows | |
| 6612 | 5/1/2017 11:44 | Reboot h1dc0 before its uptime exceeds 208 days (15th May 2017). | |
| 6611 | 5/1/2017 11:43 | reboot all front end computers with more than 208 days uptime (22 machines) plus h1nds0. | |
| 6610 | 5/1/2017 7:36 | Lubricate all Axivane supply fans on site. This is a quarterly lubrication. | |
| 6609 | 4/28/2017 13:51 | Soft close GV 5,7 to move cleanroom in biergarten |