West Virginia Code of State Rules › Agency 56 - Miners' Health, Safety And Training › Title 56 - LEGISLATIVE RULE OFFICE OF MINERS' HEALTH, SAFETY AND TRAINING › Series 56-23 - Rules for Operating Diesel Equipment in Underground Mines in West Virginia › Section 56-23-5 - Exhaust Emissions Control

Current through Register Vol. XLI, No. 28, July 12, 2024
5.1.
				Underground diesel-powered equipment shall include an exhaust emissions control
				and conditioning system that has been laboratory tested with the diesel engine,
				except as provided in section 5.3., using the ISO 8178-1 test and has resulted
				in diesel particulate matter emissions that do not exceed an average
				concentration of 0.12 mg over m to the third power when diluted by one hundred
				percent of the MSHA Part 7 approval plate ventilation rate for that diesel
				engine. Should MSHA promulgate new regulations that change the MSHA Part 7
				approval plate ventilation rate, the dilution percentage relative to the
				approval plate ventilation rate will be adjusted either up or down on a direct
				ratio basis upon recommendation of the director.
5.2. The exhaust emissions control and
				conditioning system shall be required to successfully complete a single series
				of laboratory tests conducted at a laboratory accepted by the director for each
				diesel engine, except as provided in section 5.3.
5.3. An exhaust emissions control and
				conditioning system may be approved for multiple diesel engine applications
				through a single series of laboratory tests, known as the ISO 8178-1 test, only
				if data is provided to the director that reliably verifies that the exhaust
				emissions control and conditioning system will meet, for each diesel engine,
				the in-laboratory diesel particulate matter standard established by this
				section. Data provided to satisfy this provision shall include diesel
				particulate matter production rates for the specified engine as measured during
				the ISO 8178-1 test, if available. If ISO 8178-1 test data for diesel
				particulate matter production is not available for a specified engine,
				comparable data may be provided to the director that reliably verifies that the
				exhaust emissions control and conditioning system will meet, for the specified
				diesel engine, the in-laboratory diesel particulate matter standard established
				by this section. This standard shall only be used for in-laboratory testing for
				approval of diesel-powered equipment for use underground.
5.4. The exhaust emissions control and
				conditioning system shall include the following:
5.4.1. A diesel particulate matter (DPM)
				filter that has proven capable of at least a seventy-five percent reduction of
				diesel particulate matter.
5.4.2.
				An oxidation catalyst or other gaseous emissions control device capable of
				reducing undiluted carbon monoxide emissions to 100 ppm or less under all
				conditions of operation at normal engine operating temperature range.
5.4.3. An engine surface temperature control
				capable of maintaining significant external surface temperatures below three
				hundred two degrees Fahrenheit.
5.4.4. A system capable of reducing the
				exhaust gas temperature below three hundred two degrees Fahrenheit.
5.4.5. An automatic engine shutdown system
				that will shut off the engine before the exhaust gas temperature reaches three
				hundred two degrees Fahrenheit and, if waterjacketed components are used,
				before the engine coolant temperature reaches two hundred twelve degrees
				Fahrenheit. A warning shall be provided to alert the equipment operator prior
				to engine shutdown.
5.4.6. A spark
				arrestor system.
5.4.7. A flame
				arrestor system.
5.4.8. A sampling
				port for measurement of undiluted and untreated exhaust gases as they leave the
				engine.
5.4.9. A sampling port for
				measurement of treated undiluted exhaust gases before they enter the mine
				atmosphere.
5.4.10. For in by
				diesel equipment, any additional requirements of MSHA regulations at 30 CFR
				Part 36 (relating to mobile diesel-powered transportation equipment for gassy
				noncoal mines and tunnels).