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Reports until 16:07, Thursday 10 May 2012
LHO General
jonathan.berliner@LIGO.ORG - posted 16:07, Thursday 10 May 2012 - last comment - 18:28, Thursday 10 May 2012(2818)
Thursday Ops Log
- Stop Work on ALS laser at EY during the morning due to confusion over access, SOPs, and the ODs of laser glasses. The Stop Work was lifted shortly afterwards.
- Reminder: Stop Work orders and affairs relating to all personnel should be sent to the entire site mailing list (address withheld from aLOG), not just the staff mailing list.
- For watchdogs, the ETMY SUS MEDM is incorrect. If the IOPDACKILL shows that damping is allowed, and the 10-minute bypass is started, it will show the IOPDACKILL tripping. Either one of these signals is incorrect.
- Mid-Columbia Forklift replaced the tires on a forklift.
- Dust counts in the bake oven lab were ~10,000 today for a considerable period of time.
- Integration Meeting convened in the Control Room.
- Hugh removed HAM2 ISI cover for pre-install testing.
- PSL working on video cameras and other controls...Rick is looking for (aspiring) experts in laser power metrology and beam profiling.
- ALS/TMS crew working with laser. They were also working in BSC6.
- At ~3pm, an AC power cord was pulled at EY, cutting power to the timing fanout system at EY. Systems were restored afterwards.
- SUS working inside of BSC8 in the afternoon.
- OSB doors locked at 4:00pm.
Comments related to this report
jeffrey.garcia@LIGO.ORG - 18:28, Thursday 10 May 2012 (2821)
The  SUS ETMY medms are correct in displaying the either "un-tripped" or "tripped" state of the IOP watchdogs.  However, there is a third state in which the IOP watchdogs may be tripped but have been bypassed manually.  This third state is not apparent on the SUS medm (to be added soon), but the SUS medms are an accurate representation of the state of the IOP watchdog.  There is just some third state where these watchdogs can be bypassed temporarily, which requires a work permit. The SUS medms are accurate except (for now) during this VERY TEMPORARY bypass state that can only be implemented in 10-minute intervals.  That is the reason for the work permit signatures when bypassing this watchdog. The medm functionality has been tested.
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