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Reports until 15:09, Friday 15 June 2012
H1 SEI
greg.grabeel@LIGO.ORG - posted 15:09, Friday 15 June 2012 - last comment - 09:07, Wednesday 20 June 2012(3146)
HAM6 Shipping Container Nitrogen Purge
HAM6 was placed into a shipping container around January 27th, Corey's alog, and purged with a Nitrogen boil-off from a dewar. To the best of my knowledge it has not been purged since that time. To determine what the humidity levels inside the container were like, a super elaborate no expenses spared contraption was developed to capture the exhaust from the container during the purge (photos attached). Data logging using a testo 645 dew point probe was started as soon as the purge began and ran for about 19 hours (graph attached).

Direct LN2 boil-off read at -48.5 td°C, 9.2 °C; while ambient LVEA readings were at 4.4 td°C, 20.1 °C. Purge rate is ~10 L/m with ~5,442 L of empty volume inside the container. 
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Comments related to this report
greg.grabeel@LIGO.ORG - 15:46, Friday 15 June 2012 (3149)
Future data from purges will be stored on the DCC here. T1000714.
greg.grabeel@LIGO.ORG - 09:58, Monday 18 June 2012 (3156)
Over the weekend (6-15 to 6-18) purge of the HAM6 shipping container.
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greg.grabeel@LIGO.ORG - 09:07, Wednesday 20 June 2012 (3180)
Attached is a handy Moisture Conversion Table by request of John Worden.
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