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CTOS Registration Desk  

HOURS OF OPERATION: Mon-Thu, 7:00am-5:00pm (PST)
PHONE:  1(877)WMD-CTOS     1(877) 963-2867  

E-MAIL:  ctosreg@nv.doe.gov
For Emergencies after-hours and weekends please call:  (702) 409-9087

CTOS Mobile Training Registration Desk 
E-MAIL:  ctosmttreg@nv.doe.gov 

CTOS Remote Training Desk (For Remote Trainer Requests) 
E-MAIL: ctosrmttrnr@nv.doe.gov   EFAX: (702) 537-2639

Website Support
E-MAIL: ctosreg@nv.doe.gov


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.