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Welcome to the NNSA Explosives Classification Program


The National Nuclear Security Administration (NNSA) Service Center's Explosives Classification Program (ECP) provides the Explosives Classification Transportation System (ECTS) database of approved/final classifications and interim hazard classifications (IHC) for explosives that are issued specifically for use by the U.S. Department of Energy (DOE).

The approved and interim classification letters are published within the secured area of the ECTS website.  Registered and authorized users may download letters which are in PDF format.  You must have a user name and password to access these items.

Links to other related documents are available, such as DOT Special Permits with DOE as the holder.

To proceed, please select "ECTS" that is located in the menu located at the top of this page.


This website is maintained for the U.S. Department of Energy, NNSA Service Center, Albuquerque, NM, by EnergySolutions Federal Services Inc., Northwest Operations, Richland, WA.


For assistance or comments please contact:
Phone:  (509) 375-9550