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Reports until 14:31, Wednesday 22 April 2026
H1 SYS
betsy.weaver@LIGO.ORG - posted 14:31, Wednesday 22 April 2026 (89977)
BSC2 Cartidge preps
PARTICLE COUNTS in Cleanroom Tent on top of BSC2:  All zeros (or puffs of 10) across from the HEPA flow bank on the opposite side of the ISI pillow, see pix attached.  Counted just after crew left area doing walking plates.  The Tent is working as planned.

PEM BNCs wandering across the West bay was coiled up out of the way of all of the heavy foot traffic.

PEM WEST BAY WALL COIL cables across floor has been disconnected and also coiled up and now out of the way of heavy foot traffic. 

Travis/Mitchell/Randy installed the Walking Plates for better access to the ISI up at the platform level.  Note, after some deliberation and re-reviewing of the drawings (which are actually incorrect), it turns out that you cannot attach the bolts to the underside of the flanges anyways due to in-accessibility of the area.  LLO doesn't recall using them recently either. (Last picture)
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