Welcome to the Compressed Air Nuclear Users Group (CANUG) website.

CANUG Conference:

The next meeting dates and locations will be announced soon.


To In 1998, INPO sponsored an Instrument Air (IA) Working Group, inviting 30 to 40 Nuclear Power Plant IA System Engineers to present and discuss the status of the IA systems they were responsible for.   A general observation by the Instrument Air Engineers is they are essentially experiencing similar system problems.  IA engineers have either resolved them or were in the process of resolution (or maybe they didn’t realize they had a problem until it was mentioned).  The genesis of that meeting resulted in numerous suggestions were provided across the table.

 With this encouragement and the advent of availability of E-mail at the Nuclear Power Plants, a vision was established to develop an E-mail mailing list that included all Nuclear Power Plant IA System Engineers.   With this list, problems and concerns could be presented via the WWW and suggestive resolutions (from those who had already experienced similar problems/concerns) can be returned.

 In January 2001, the Air Operator Valve Users Group (AUG) sponsored the first IA Working Group Conference along with their own AUG conference.  CANUG desires to continue this relationship.


 To develop and exchange information between Compressed Air Systems Engineers serving Nuclear Power Plants.


 To improve the reliability, availability, and reduce the cost of the compressed air systems that serves the valves, instruments, and other components utilizing compressed air in controlling the conversion of nuclear energy to electricity.  In some cases a safety related function concerning the safe shutdown of nuclear reactors is also served.

Mission concerns include:

  • Systems;  from the intakes of the compressors to the end use devices,
  • Components;  including compressors, dryers, filters, aftercoolers, moisture separators, drain traps, receivers, piping, valves, and instruments,
  • Procedures for operation, maintenance (preventive and corrective), and testing,
  • Reports,
  • Conceptual Design of Systems,
  • Peer assistance for problem analysis and resolution,
  • Potential vendors, and
  • Information repository for reference and training.