vernon.sandberg@LIGO.ORG - posted 11:13, Wednesday 14 December 2016 (32563)
Work Permit Summary for 2016 December 13 Maintenance
| Work Permit | Date | Description | alog/status |
| 6401.html | 2016-12-13 15:00 | Send cell phone text alarms if any LN2 dewar level drops below a specified level (determined by vacuum group) | 32541 |
| 6400.html | 2016-12-13 13:52 | Add a second PCIe card to the h1hwsmsr computer. | |
| 6399.html | 2016-12-13 10:56 | The CDSFS0 controller is generating errors on the kernel, as part as troubleshooting this it is required to upgrade the firmware on the card, this needs to be done and power off and on the server to load the new firmware. All the control room workstations will be disable while this job is in process. The process will be performed on Tuesday 12/20/16 but We open the Work permit from today in case the severity of the problem increases before then. | |
| 6398.html | 2016-12-13 10:50 | CP4 pump level to be removed from cell phone alarm texting, similar to what was done for CP3. | 32541 |
| 6397.html | 2016-12-12 19:53 | Public tour for ~2-3 UW Bothell engineers. Requesting ~15-30 minutes around 11a. | |
| 6396.html | 2016-12-12 16:16 | Replace ion pump #12 power supply at EX. | 32514 |
| 6395.html | 2016-12-12 08:19 | Update gstlal-calibration on the DMT to the latest version and restart it during the next maintenance period: gstlal-calibration-1.1.0-v1: * A small bug fix to make primary and redundant pipelines produce identical output. gstlal-calibration-1.1.2-v1: * A bug fix that allows the pipeline to produce output when run offline. The plan is to install the latest version (gstlal-calibration-1.1.2-v1) including both bug fixes on the DMT, if it gets approved by the Software Change Control Board (SCCB). Otherwise, the gstlal-calibration-1.1.0-v1 version has already been approved by SCCB, and will be installed. | 32517 |
| 6394.html | 2016-12-09 12:18 | Swap yellow & red TC wires at Beckhoff rack: (TE252A & TE252B wires) red should be where yellow is and vice versa | |
| 6393.html | 2016-12-08 10:22 | Plug in a TCS RTD temperature probe to it's unused 9pin temp port on Front Panel of Flipper Breakout Box on TCSY table. This will allow for another independent check of LVEA temperature. Will need laser hazard in LVEA to complete this work. | Closed. Installation deferred until temperature sensor locations are reviewed. |
| 6392.html | 2016-12-08 08:44 | Due to RAID failure I will swap cdsfs0 for cdsfs1 | |
| 6391.html | 2016-12-07 13:14 | Fix some bugs in the way that the ASC and LSC loops are handled in DOWN to prevent sending impulses to the optics which could ring up violin modes. (related to LLO alog 29111) | |
| 6390.html | 2016-12-07 11:04 | Install low pass filtering in the DAQ readbacks of the IMC servo board. | |
| 6389.html | 2016-12-07 10:31 | As part of testing/implementing the Beckhoff based safety system, chassis D1600379 will be installed. The unit will be placed in the TCS rack in the mechanical mezzanine. Chassis will be powered on, with none of its inputs/outputs connected. | 32526 |
| 6386.html | 2016-12-06 10:23 | Vent annulus volume between 2K input Mode Cleaner tubes A and B. Connect annulus ion pump hardware and pump with rotating shaft vacuum pumps until ion pump can maintain unassisted. Can be done limited to maintenance days until complete | 32254 & 32531 |
| 'Previous WPs’ | |||
| 6381.html | 2016-12-05 12:18 | Replace the TCSY Flow meter. Turn TCSY laser off, valve out piping volume, remove yellow paddle wheel flow meter, install new one (same version/model number). Check flow, get laser going again - will need to stabilize. | Defer to Dec 20 or Jan 3 Maintenance |
| 6368.html | 2016-12-02 12:01 | Continue with schedule of roaming high-frequency calibration line from PCALX to establish high-frequency calibration uncertainty. Switching frequencies will only occur in either Single IFO time or when IFO is down, otherwise we should be observation ready. Detchar will continue to be informed. We expect to complete the schedule in ~1 week, and then line will be turned off until further notice. | 32179 & 32515 |