Larry Rietz

Larry Rietz is a NICET Level IV certified fire alarm designer with over 22 years of life safety industry experience. After working for almost 14 years with a large fire alarm manufacturer and service provider, he is now director of the Denver office for Jensen Hughes. He has designed and analyzed several large fire alarm and emergency communication systems for transportation, entertainment and higher education campuses and is the project manager for the Denver International Airport Public Safety Notification Upgrade project. Larry currently serves on the Automatic Fire Alarm Association (AFAA) Board of Directors, on the Technical Committee (Principal) for NFPA 1616 Standard on Mass Evacuation, Sheltering and Re-entry, and on the Technical Committee (Alternate) for NFPA 72 Chapter 24 (SIG-ECS).

Previous courses taught:           

  • A User’s Guide to Simplifying NFPA 72 and the NEC (AFAA)
  • Fire Alarm Plan Review (AFAA)
  • Fire Alarm System Inspection and Testing Seminar (AFAA)
  • NFPA 72 – Brief Overview (2007, 2010, 2013 editions)
  • NFPA 72 – Detailed Review (2010, 2013 editions)
  • NFPA 72 – New Edition Changes (2007, 2010, 2013 editions)
  • Anatomy of a Large-Scale Emergency Communication System
  • Analysis of Existing Emergency Communication Systems
  • Understanding Acoustically Distinguishable Spaces (ADS)
  • Understanding ECS and MNS Requirements and Implementation Considerations

Articles by Larry Rietz

  • Figure 1: Special manual building evacuation station. Photo courtesy of Jensen Hughes Inc.
September 2017
Recently, a number of inquiries were made to our office regarding the topic of delaying or preventing the activation of fire alarm notification appliances. In one case, an owner wanted to activate notification only after a second fire alarm was initiated, basically ignoring the first alarm for some period of time. READ MORE
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