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Mining Contract: Evaluation and Testing of Pressure Relief Valves (PRVs) for Refuge Alternatives Subjected to Explosive Forces
Keywords: Limit devices Refuge chambers
This page is archived for historical purposes and is no longer being maintained or updated.
Contract #
75D30118C01230Start Date
9/9/2018End Date
9/5/2020Research Concept
This research will offer insight into the survivability and reliability of pressure relief valves on refuge alternatives when subjected to explosive forces.
Contract Status & Impact
This contract is complete. To receive a copy of the final report, send a request to mining@cdc.gov.
Research to date by NIOSH suggests that the design and the implementation of refuge alternatives (RA) pressure relief valves (PRVs) have not yet had sufficient performance analysis. No testing has been performed on PRVs to study their behavior when subjected to 103 kPa (15 psi) impulse overpressure. Also, PRV survivability and valve design reliability have not been addressed. The proposed project is focusing on RA PRV survivability evaluation and analysis through physical testing and numerical modeling of different valve designs under explosive conditions.
This contract with the University of Kentucky will research the survivability of PRVs commonly used in Built-In-Place (BIP) and self-contained mobile unit RAs through physical testing and numerical modeling. The research will also explore the use of other commercially available valves such as blast valves (used in reinforced underground shelters) and its applicability to RAs when subject to overpressure waveforms typical of methane/coal dust explosions.
See Also
Disaster Survivability for Refuge Alternative Relief Valves
Emergency Escape and Refuge Alternatives
How to Operate a Refuge Chamber: A Quick Start Guide
Recommendations for Refuge Chamber Operations Training
Refuge Alternatives in Underground Coal Mines
Refuge Alternatives Relief Valve Testing and Design with Updated Test Stand
Technology News 537 - NIOSH Develops New Mine Refuge Chamber Training
Underground Mine Refuge Chamber Expectations Training: Program Development and Evaluation
When Do You Take Refuge? Decisionmaking During Mine Emergency Escape
Work-Principle Model for Predicting Toxic Fumes of Nonideal Explosives
Page last reviewed: December 17, 2021
Page last updated: December 17, 2021
Content source: National Institute for Occupational Safety and Health, Mining Program
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