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Message ID: 1495     Entry time: Thursday, April 13, 2017, 11:33
Author: David Wang 
Category: Conditioning Station 
Type: Standard Operation 
Module: TM2 
Target/Number:  
Subject: Helium pressure test on TM2 water llines at TCS. 

LD  BLR :0.0 X E-9 atm.cc/sec. BP:0.0XE-4 torr. helium 70 psi. 3 minutes on each circuit

HS 1.8XE-7 ATM.CC/SEC
TA+ 1.4 XE-7
TA- 4.3XE-8
TUBE+ 1.0XE-7
TUBE- 5.9XE-8
COIL 1 2.2XE-9
COIL 2 0.0XE-9
EE 0.0XE-9
MSP 8.8XE-8
ALL TOGETHER 6.7XE-7
ALL TOGETHER WITHOUT HS 4.7XE-7

There is a smallleak HS which we did not see before. The HS is checked in SHC  with helium spray yesterday. We did not see the leak . We checked this HS line every time when new target was installed. So mostly, this small leak is from VCRs connected to new target. But, we can not confirm it.  Still this line will be checked on next new target. We should have a better understanding when checking next time.  Other line are almost same as we checked in last year November. I did not see essential change.

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