About Sigma-NAC Nuclear Solutions, LLC

Small business resources providing exceptional nuclear professional services combined with state-of-the art radioactive material and fuel storage and transport technologies and systems.

Sigma-NAC Nuclear Solutions, LLC (SNNS) combines the strength of two trusted providers in the nuclear industry—Sigma Science, Inc. and NAC International Inc. Together, we provide an integrated suite of solutions in waste analysis; problematic waste streams; advanced reactor fuels; and packaging, logistics, transport, and disposal for spent nuclear fuel (SNF) and radioactive waste.

For over 25 years, Sigma Science has been providing nuclear professional expertise and technical solutions for some of the most difficult nuclear materials and waste challenges for both federal and commercial clients. Sigma has a proven track record of providing nuclear engineering; nuclear facility and transportation safety basis analysis; radiological shielding and criticality analysis and characterization; problematic high hazard nuclear waste and fuels analysis, treatment, characterization, packaging, and transportation; nuclear safeguards and security; and environmental compliance.

For more than 50 years, NAC has been a leading provider of nuclear fuel cycle technology and consulting solutions. Founded in 1968 as Nuclear Assurance Corporation, NAC was recognized early on for its pioneering nuclear market information services and later established a highly successful SNF storage and transport cask design and licensing business worldwide. NAC now is a global provider of fuel cycle consulting services and patented, unique technology solutions, including engineering, licensing, and supplying casks and canister solutions for spent fuel and high-level waste.

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