Reports until 08:43, Tuesday 07 June 2016
H1 SEI
hugh.radkins@LIGO.ORG - posted 08:43, Tuesday 07 June 2016 - last comment - 08:44, Tuesday 07 June 2016(27603)
HEPI Accumulator Pressure Check & Recharge

All accumulators  were in good shape with little to zero drop in pressure since last checked--26 Jan 2016.

Of course you can't do this task without impacting the accumulators.  After checking the HAM5 return unit, the valve was leaking upon pulling the gauge and I could not get it to reseat.  The schraeder valve was replaced.  Several units lost more than the usual when the gauge did not come off the valve cleanly(quickly) and subsequently had to be rechanged.  There were several units which were marginal in January and although they were still in okay range, they were charged up to the top of the acceptable range.

The values have been recorded in T1500280 and I will update this on the DCC after today's HEPI maintenance.  Levels I suspect will be different after the full shutdown and additionally I'll do a thorough purge of the resistors which also could affect the Reservoir Levels.  Also, motor greasing is about a year old.

Comments related to this report
hugh.radkins@LIGO.ORG - 08:44, Tuesday 07 June 2016 (27604)

This was done yesterday during outage recovery.