CTOS Center for Radiological Nuclear Training
Top of Content Page


Thank you for your interest in contacting us. If you would like to:

  • Learn about new or upcoming CTOS courses
  • Submit a suggestion
  • Have a question concerning our training

Please provide your information below and a CTOS representative will gladly contact you. You may also find answers to your inquiries through our Frequently Asked Questions (FAQs) page.

Resident Training Information and Registration

HOURS OF OPERATION: Mon-Thu, 7:00am-5:00pm (PST)

PHONE: 1 (877) WMD-CTOS / 1 (877) 963-2867

EMAIL: ctosreg@nv.doe.gov

For Emergencies after-hours and weekends please call: (702) 409-9087

Mobile Training Information and Registration

CTOS (For Remote Trainer Requests)

EMAIL: ctosrmttrnr@nv.doe.gov

EFAX: (702) 537-2639

CTOS Indirect Training


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