Reports until 12:25, Tuesday 23 April 2024
H1 CDS (SUS)
filiberto.clara@LIGO.ORG - posted 12:25, Tuesday 23 April 2024 (77350)
Grounding of SUS-R5/SUS-R6 Racks and Cable Tray Installation

WP 11814
WP 11825

Cabling between BSC3 and BSC7 now supported by a cable tray. See attached picture. Cabling previously held in place by zip ties and velcro. Concern if zip ties failed, vacuum piping on GV2 could be damaged. Good catch by the vacuum team.

During installation of cable tray, found that both SUS-R5 and SUS-R6 racks were not grounded. After discussing with Robert/Richard, we decided to ground the racks. Robert will compare before/after once we reach NLN.

If grounding of racks needs to be reverted, the 6 awg grounding cables can be disconnected at each rack.

Images attached to this report