CTOS Registration DeskHOURS OF OPERATION: Mon-Thu, 7:00am-5:00pm (PST)
CTOS Mailing Address
U.S. Department of Energy
CTOS - Center for Radiological/Nuclear Training
Nevada National Security Site
P.O. Box 98521, M/S NLV 126
Las Vegas, NV 89193-8521
If you have any concerns, suggestions, or questions concerning our training, please feel free to contact us anytime. Your inquiries may also be answered through our FREQUENTLY ASKED QUESTIONS (FAQs) page.