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Entry  Mon Apr 19 09:17:51 2021, Jordan, Update, VAC, Empty N2 Tanks N2_Pressure.PNG
    Reply  Wed Apr 21 12:56:00 2021, Jordan, Update, VAC, Empty N2 Tanks Screenshot_2021-04-21_12-53-26.png
       Reply  Wed Apr 28 11:31:40 2021, Jon, Update, VAC, Empty N2 Tanks 
Message ID: 16047     Entry time: Mon Apr 19 09:17:51 2021     Reply to this: 16064
Author: Jordan 
Type: Update 
Category: VAC 
Subject: Empty N2 Tanks 

When I came into the lab this morning, I noticed that both N2 tanks were empty. I had swapped one on Friday (4-16-21) before I left the lab. Looking at the logs, the right tank (T2) sprung a leak shortly shortly after install. I leak checked the tank coupling after install but did not see a leak. There could a leak further down the line, possibly at the pressure transducer.

The left tank (T1) emptied normally over the weekend, and I quickly swapped the left tank for a full one, and is curently at ~2700 psi. It was my understanding that if both tanks emptied, V1 would close automatically and a mailer would be sent out to the 40m group. I did not receive an email over the weekend, and I checked the Vac status just now and V1 was still open.

I will keep an eye on the tank pressure throughout the day, and will try to leak check the T2 line this afternoon, but someone should check the vacuum interlocks and verify.

 

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