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Comparison of variability in attainable travel distance with work rate between 2 Types of SCSR FY09

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

Current Information can be found at: Comparison of Variability in Attainable Travel Distance & Human Performance Between 2 Types of SCSR FY10


  • Previous research has shown performance variability between 4 models of SCSR, furthermore with body weight (Turner, et al., 2002). Others have indicated that the usable oxygen supply by a chemical oxygen SCSR is variable at high work rates, which would produce a wide variation of travel distance during an escape (Johnson, et al., 2007).
  • This investigation would measure the distance traveled while using the proposed variable work rate (CCER Concept Paper) in order to evaluate whether use rate affects the quantity of usable oxygen in two different types of SCSR.

Applicable Standards

  • 42 CFR Part 84, Subpart O
  • MINER Act

Key Partners

  • MSHA


  • Global mining industry
  • Respirator manufacturers
Man on treadmill wearing (S C S R)

Project Scope

  • While breathing from an SCSR, subjects (5 miners) would exercise on a treadmill at 3 levels of energy expenditure (0.5, 2, and 3 L/min.) until fatigued, oxygen supply is exhausted, FIO2 < 19.5%, or FICO2 > 4%.
  • SCSR would include chemical oxygen (Draeger OXY-K Plus and CSE SR100) and compressed oxygen (Ocenco EBA 6.5 and Ocenco M20)
  • Results would determine whether higher use rate reduces the quantity of usable oxygen.


  • Q1 Begin writing of CCER proposal
  • Q2 Contact and network with UMWA for support to recruit miners and Submit approved draft of CCER proposal to ADS for scientific peer-review
  • Q3 Submit contract for data collection instrument to S. Deno, Penn State Univ. and Submit proposal to NIOSH HSRB
  • Q4 Begin recruiting miners


  • Manuscripts submitted to peer-reviewed journals
  • Presentations at national/international conferences


  • Data from project are used to revise or support existing NIOSH guidance for SCSR breathing resistance and oxygen delivery systems.
  • Recommendations from project for improved SCSR management during an escape used by NIOSH and/or MSHA to support resolutions or guidance.
Page last updated: April 05, 2010
Page last reviewed: April 14, 2009
Content Source: National Institute for Occupational Safety and Health (NIOSH)
National Personal Protective Technology Laboratory