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Risk Assessments

APT conducts risk assessments for launch systems, explosives, and other inherently hazardous operations. These assessments begin with the standard risk equation

Risk = Likelihood x Consequence
From this basic equation a specific risk equation is derived in mathematical terms to reflect the scientific and probabilistic situation under assessment.

APT has been successful developing risk equations in use today by:

  • Range Commander's Council
  • Most National Ranges
  • DoD Explosives Safety Board
  • Air Force Safety Center
  • US Army Technical Center for Explosives Safety
  • Naval Ordnance Center
  • Marines Corps Systems Command
  • NATO
Specific risk equations have been developed and used for major national programs including NMD, X-34, X-37 and others.

QRA Models

APT has several models used for conducting quantitative risk assessments.

  • Flight/Range Safety Models currently for internal use; soon to be commercially available: DebRA
  • Explosives Safety Models used by DoD and NATO: SAFER

Point of Contact

Tom Pfitzer 256.327.3373

Tom Pfitzer is the Founder and President of A-P-T Research, Inc. Mr. Pfitzer holds a Masters Degree in Industrial Engineering (System Safety Option) from Texas A&M University. He is a graduate of the U.S. Army Intern Program in Safety Engineering. He has 19 years service in the safety career field for the U.S. Army. Mr. Pfitzer has over 25 years in System Safety, Range Safety, and Risk Analysis. He has held various positions in safety and risk assessment both in Huntsville, AL and Kwajalein, Marshall Islands. He has provided key leadership advice to U.S. Government agencies that are in the process of promulgating new risk-based standards. They include the National Range Commander's Council (RCC), which recently published a risk-based standard for debris protection, and the government/contractor team that developed a risk-based standard for the DoD Explosive Safety Board. This board sets national policy for explosives safety. He has served as a US member of the expert-working group that recently prepared the NATO risk-based standard. His management efforts to expand System Safety concepts and methods into other safety disciplines resulted in the 1999 Manager of the Year Award from the International System Safety Society.