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Detection of Oxygen Leaks in CC-SCBA FY 12

NOTE: This page is archived for historical purposes and is no longer being maintained or updated.


  • Develop sensor to detect facepiece leakage in CC-SCBA in order to warn the wearer of impending danger if exposed to open flames and/or high radiant heat.
Flame testing

Applicable Standards

  • 42 CFR 84 - Subpart Q

Key Partners

  • MSHA


  • NFPA
  • IAFF
  • IAFC
  • UMWA
  • CC-SCBA manufacturers
Equipment testing chamber

Project Scope

  • Develop sensor/s which would concentrate on oxygen detection in the atmosphere directly surrounding the user’s facepiece or any other part of the CC-SCBA and then to recommend new comprehensive test standards for certification. Results obtained will be used to reassess NIOSH’s current position to limit the use of positive-pressure, closed-circuit self-contained breathing apparatus


  • University of Maryland currently conducting research and testing


  • Sensor to detect oxygen leaks in the facepiece.
  • Draft certification standards for oxygen sensors in CC-SCBA
  • Revised policy on the limitations on and precaution for safe use of positive-pressure closed-circuit self-contained breathing apparatus


  • Improved overall performance, reliability, and safety of this type of respirator
Page last updated: April 17, 2012
Page last reviewed: April 17, 2012
Content Source: National Institute for Occupational Safety and Health (NIOSH)
National Personal Protective Technology Laboratory