Do any of your facilities use a vacuum interrupter type electrical circuit 
breaker that is known to emit X-rays during high-potential testing?  If so, 
what controls (if any) do you have on the breakers during normal use and 
specifically during high-potential testing?  Thanks,

Matt Sumrall
Sr. Health Physicist
STP Nuclear Operating Co.
[email protected]<mailto:[email protected]>
(361) 972-4597

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