[Dsg-dc] DC gas safety system

Marc McMullen mcmullen at jlab.org
Tue May 23 17:11:40 EDT 2017


Hi Morgan,

Brian and I have replaced the 24VAC source cables which run from the 
SFL3 gas safety system box, to the distribution box (small one with the 
barrier blocks). We have also removed the bad barrier block from the 
distribution and relocated the R1/2 solenoid power wires to the single 
barrier block.

Brian calculated the total draw of the solenoids to be just under 6amps 
for R1/2, the new cable p/n rates it at 15A vs. 4.9A (rating for 18awg 
cable, which was replaced).

We tested the solenoids with the safety system box in local mode. All 
were audibly verified. We left the supply flow at 0Lpm, as you requested.

Thanks,

-- 
Marc McMullen
Detector Support Group
757-269-7738



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