Update on refuge alternatives: Research, recommendations, …
In response to the mandates in the MINER Act of 2006, NIOSH conducted refuge alternatives research that included characterizing the utility, practicality and survivability of refuge chambers and outby safe havens. NIOSH also prepared and delivered a report to Congress in late December 2007 that summarized the findings of the research, included ...
30 CFR § 75.1507
(a) The Emergency Response Plan (ERP) shall include the following for each refuge alternative and component: (1) The types of refuge alternatives used in the mine, i.e., a prefabricated self-contained unit or a unit consisting of 15 psi stoppings constructed prior to an event in a secure space and an isolated atmosphere. (2) Procedures or methods for maintaining approved …
Decision Framing Overview and Performance of …
develop the alternatives and the criteria (performance metrics) for evaluating the alternatives. The effects of proposed bison and elk supplemental . feeding alternatives were estimated for a 20-year period. The . study considered outcomes related to bison and elk population abundance, chronic wasting disease (CWD) prevalence in elk,
Investigation of Purging and Airlock Contamination of …
Figure 8. Purge plumbing diagrams. Top diagram is for the tent-type refuge alternative airlock. Bottom diagram is for the rigid steel refuge alternative airlock.....16 Figure 9. Representative example of data for carbon monoxide (CO) purging of airlock for a …
Underground Mine Refuge Alternatives Heat Mitigation
In case of an emergency in an underground coal mine, miners who fail to escape from the mine can enter a refuge alternative (RA) for protection from adverse conditions, such as high carbon monoxide levels. One of the main concerns with the use of both portable and built-in-place (BIP) RAs, especiall …
Prediction of human core temperature rise and moisture loss in refuge
The environment inside a typical coal mine refuge alternative tends to be very humid, and the air temperature would be expected to rise within the refuge alternative due to the metabolic heating of the occupants and heat generated by the CO 2 scrubbing system. Because the temperatures within a refuge alternative are continually rising, the UCHS ...
Mine Safety and Health Administration (MSHA)
MSHA considers refuge alternatives as a last resort to protect persons who are unable to escape from an underground coal mine in the event of an emergency. This proposed rule would …
eCFR :: 30 CFR 7.504 -- Refuge alternatives and …
(1) A two-way communication facility that is a part of the mine communication system, which can be used from inside the refuge alternative; and accommodations for an additional communication system and other requirements as defined in the communications portion of the operator's approved Emergency Response Plan.
Cryogenic Air Supply for Cooling Built-in-Place Refuge Alternatives …
Built-in-place (BIP) refuge alternatives (RAs) are designed to provide a secure space for miners who cannot escape during a mine emergency. Heat and humidity buildup within RAs may expose miners to physiological hazards such as heat stress. To minimize the risk of heat stress, Title 30 Code of Federal Regulations (CFR), or 30 CFR, mandates a maximum …
Refuge Chambers in Underground Mines
Strata Mine Refuge Chambers and Safe Rooms are safety systems to provide isolated atmospheres of breathable air if the air underground becomes compromised. Menu. 01 Home; ... Airlock Module alternative entry with …
Refuge Alternatives for Underground Coal Mines
Coal mine operators, coal miners, equipment manufacturers, academia, and the public were invited to provide information on the current state of refuge alternatives in …
Strata FAB Refuge Alternative Alert
Strata FAB Refuge Alternative Alert . To: All Strata Safety, LLC customers . Date: November 27, 2024 . Re: Strata FAB Inflatable Refuge Alternatives . During a recent, non-emergency, deployment of a Strata Safety, LLC FAB (Fresh Air Bay), while the deployment and inflation of the unit occurred as expected, after approximately 24 hours, it was
Refuge Alternatives for Underground Coal Mines
The agency estimates that for most mines, alternative 1 would cost between $100,000 and $500,000. MSHA estimates that the difference in cost between 48 hours worth of provisions and 96 hours worth of provisions is $5,000 for 10-person refuge alternatives and $10,000 for 20-person refuge alternatives for alternative 2.
Facilitating the Use of Built-in-place Refuge Alternatives in …
A report summarizing the potential advantages of built-in-place (BIP) refuge alternatives, discussing three approaches to locating them further from the face, outlining design and approval guidelines for refuges alternative (RA) stoppings, and analyzing the issues involved in delivering a reliable supply of clean, breathable air to a BIP RA.
Refuge alternatives relief valve testing and design
The U.S. National Institute for Occupational Safety and Health (NIOSH) has been researching refuge alternatives (RAs) since 2007. RAs typically have built-in pressure relief valves (PRVs) to prevent the unit from reaching unsafe pressures. The U.S. Mine ...
2018 Structural Component Approval for Refuge …
Refuge alternatives will be out-of-service during retrofits Refuge Alternative Retrofits Pre-fabricated refuge alternatives in service after December 31, 2018 must have MSHA part 7 approvals for structural components as well as breathable air, harmful gas removal
Mining Feature
The NIOSH Office of Mine Safety and Health Research has just published two new Report of Investigations (RIs) on refuge alternatives used in underground coal mines. The …
Refuge alternatives relief valve testing and design with …
The purpose-built refuge alternative relief valve tested is used in steel prefabricated portable refuge alternatives and built-in-place refuge alternatives. As delivered, the purpose-built refuge alternative relief valve did not meet the 1.25 kPa (0.18 psi) limit. However, the valves may be calibrated to meet the specifications set by the ...
Consider Refuge in Domestic-driven Stocks as Alternatives …
Consider Refuge in Domestic-driven Stocks as Alternatives to AI Proxies, Says Maybank Welcome! Select a username of your choice. Username . 6 to 20 characters, no spaces or special characters ... KUALA LUMPUR (Feb 6): Investors looking for alternatives to battered data centre and artificial intelligence (AI) proxy stocks may want to consider ...
30 CFR 75.1506
§ 75.1506 - Refuge alternatives. § 75.1507 - Emergency Response Plan; refuge alternatives. § 75.1508 - Training and records for examination, maintenance and repair of refuge alternatives and components. § 75.1500 - [Reserved] § 75.1501 - Emergency evacuations.
Portable refuge alternatives temperature and humidity tests
Federal regulations require refuge alternatives in underground coal mines to sustain life for 96 h while maintaining an apparent temperature below 35 °C (95 °F). Research by the U.S. National Institute for Occupational Safety and Health (NIOSH) …
CDC
The NIOSH Office of Mine Safety and Health Research has just published two new Report of Investigations (RIs) on refuge alternatives used in underground coal mines. The research that drove these two reports was a follow-up to NIOSH OMSHR's 2007 Research Report on Refuge Alternatives for Underground Coal Mines. This report identified several ...
Evaluation on Underground Refuge Alternatives and …
Keywords Refuge alternatives · Refuge chamber · Built-in place · Mine explosion · Numerical analysis Abbreviations ALE Arbitrary Lagrange-Eulerian algorithm BIP Built-in-place CABA Compressed air breathing apparatus CO 2 Carbon dioxide CO Carbon monoxide FSI Fluid-solid interaction MSHA Mine Safety and Health Administration
Docket 125: Refuge Alternative Research | NIOSH | CDC
NIOSH prepared a report to summarize the findings of its research into refuge alternatives in underground coal mines, as mandated in Section 13 of The Mine Improvement and New Emergency Response Act of 2006 ("MINER Act"). This docket contains the supporting information and key reference materials concerning the utility, practicality ...
Effects of mine strata thermal behavior and mine initial …
Validated thermal simulation model. As the 10-person training RA was being tested by NIOSH in the Safety Research Coal Mine, NIOSH also contracted ThermoAnalytics Inc. (Calumet, MI) to develop and validate a thermal simulation model of the 10-person training RA (Yan et al., 2015).In the model, the mine strata was modeled in 75-mm (3-in.)-thick layers up to depths of 1.8 m (6 …
Update on refuge alternatives: research, …
In response to the mandates in the MINER Act of 2006, the National Institute for Occupational Safety and Health (NIOSH) conducted refuge alternatives research that included characterizing …
Experimental air curtain solution for refuge alternatives in
Refuge alternatives can provide a safe, confined place for miners who are trapped underground when a mine emergency occurs, thereby isolating them from hazardous environments and sustaining their lives for a period of at least 96 h (Margolis et al., 2011, MSHA, 2008).This level of isolation requires adequate aerodynamic sealing measures, such as …
30 CFR 75.1506
(a) Each operator shall provide refuge alternatives and components as follows: (1) Prefabricated self-contained units, including the structural, breathable air, air monitoring, and harmful gas removal components of the unit, shall be approved under 30 CFR part 7; and (2) The structural components of units consisting of 15 psi stoppings constructed prior to an event shall be …
Mining Feature: Announcing New Publication on Refuge …
Based on these findings, NIOSH believes that mines could locate built-in-place refuge alternatives at distances from the working face based on the guidance provided by the …
Refuge alternatives relief valve testing and design with …
Purpose-built refuge alternative relief valve, with diameter of 10.2 cm (4.0 in.). Finally, a brass/cast iron butterfly check valve was tested ().It was modified by removing the torsion springs to lower the relief pressure to 1.25 kPa (0.18 psi) and orienting the valve to use the weight of the brass parts to create relief pressure resistance.