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Long-Term Field Evaluation(LTFE) of SCSRs - FY10

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


  • To evaluate the reliability of Self-Contained Self-Rescuers (SCSRs) deployed in US underground coal mines.
Miners wearing Self Contained Self Rescuer (S C S R)

Applicable Standards

  • 42 CFR 84
  • 30 CFR 75

Key Partners

  • MSHA


  • BCOA
  • NMA
  • UMWA
  • USWA
  • SCSR Manufacturers

Project Scope

  • Collect random sampled respirators per new protocol Feb 2009..
  • Test the apparatus on a breathing and metabolic simulator (100%) and on human subjects walking on a treadmill (QC) to determine life support capability and to ensure that every apparatus that passes its inspection criteria can be relied upon for emergency life support.


  • None


  • Problem reports to NIOSH Technology Evaluation Branch TWO CPIP currently open with CSE, one directly from LTFE.
  • Directives to SCSR manufacturers for corrective actions


  • Validation that equipment is performing as certified
  • Corrective actions by manufacturers to address reported problems
  • NPPTL, PRL, and MSHA developed new O2 protocol
Page last updated: April 5, 2010
Page last reviewed: April 5, 2010
Content Source: National Institute for Occupational Safety and Health (NIOSH)
National Personal Protective Technology Laboratory