corey.gray@LIGO.ORG - posted 05:29, Thursday 02 May 2019 - last comment - 07:27, Thursday 02 May 2019(48921)
Low Temperatures Inside MX, MY and EY Has 1.5+ DegF Oscillation
On Tues at between 10am-noon PDT noticed temperature issues in outbuildings, MX & MY took a step down in temperature (8 degF for MX & 4 degF for MY). MX has started its LOW temp alarms this morning just after 5am.
- Additionally, EY's temperature is generally +/- 0.1 degF from 65degF, but at the same time it has started to oscillate +/- 1.0 degF.
- EX's temp had a spike at same time above buildings had changes, but it quickly returned to temperatures of +/- 0.1 degF from 65degF.
- LVEA has not shown any issues.
- Attached is 15-day trend of VEA temps (also EX roof outside temp). Will send Bubba an email.
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Thank you Corey for this observation, we are not trying to hold the mid station temperatures to the same tolerances as the end and corner stations. We performed maintenance on the HVAC systems on all buildings on Tuesday morning which may be the reason for the fluctuation in temps at the end stations. According to my FMCS monitoring, the temperatures in the buildings where the instrument is located seem to have stabilized after the maintenance period.