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.
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.