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Learn more about Nuclear Criticality Safety Division

A Professional Division of the American Nuclear Society dealing with the practice of ensuring that fissile material operations outside of reactors are performed safely.  Our area of expertise encompasses operating practices, field support, code development, cross section measurement, critical and subcritical experimentation as well as common sense.


A diverse and active group. We represent all facets of nuclear criticality safety, including academics, the Department of Energy, Nuclear Regulatory Commission, contractors, owners and operators of nuclear facilities.  We include national and international individuals, professionals and students, technical experts and program managers.  NCSD has over 800 members, yet is small enough to have others know your name and follow your development.

Criticality safety is a close-knit community and the opportunity for making technical and social contacts through NCSD is substantial.  NCSD gives you instant access to an extensive technical network that can help you solve difficult problems quickly and distinguish yourself from the crowd.  We provide training and resources to help you get the answer right the first time.  By getting involved, you can make a difference: contributing best practices and innovative solutions, helping others in your field through mentoring and sponsoring newcomers, and increasing the safety of the public.  NCSD represents a forum where you can develop leadership skills, contribute new ideas, make your opinions heard and help shape future standard practices and regulations.  We also recognize and award impressive contributions to the field.


  The highly educated and experienced Nuclear Criticality Safety (NCS) professionals examined in this study are commanding healthy salaries, an attractive array of benefits and they appear to have satisfaction in their overall compensation. Their salaries are higher than that of all engineers when adjusting for years of experience, which can be attributed to a number of factors including:

  • Large portion of respondents with advanced degrees (66%)
  • Significant professional experience: 21.9 years on average
  • Significant experience in NCS: 14.6 years on average
  • Expertise in NCS, where 65% (on average) of respondents’ time is devoted to NCS

Nuclear Criticality Safety Professionals Compensation Study        (PDF) (October 2016)

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