Ohio Administrative Code › Title 1501:10 - Division of Mineral Resources Management - Mine Safety › Chapter 1501:10-2 - Diesel Equipment in Underground Coal Mines › Section 1501:10-2-07 - Exhaust emissions monitoring and control

Current through all regulations passed and filed through July 1, 2024
(A) Threshold limits for exhaust emissions.
			 For the purposes of monitoring and controlling exhaust emissions, the following
			 threshold limits of ambient concentration of exhaust emissions in the mine
			 atmosphere  apply:
Threshold limit values (TLV)
Carbon Monoxide (CO)
35 parts per million (ppm)
Nitrogen Dioxide (NO2)
3 parts per million (ppm)
The concentration of these exhaust emissions
				
									are to
				be measured at the equipment operator's or equipment attendant's position and
				inby the last piece of diesel-powered equipment operating in the same split of
				air. A person qualified to take measurements in accordance with
				30 C.F.R.
				75.150
									
									is to take
				measurements weekly or more often if necessary pursuant to
				 this chapter. The
				ambient emissions limits for each piece of diesel-powered equipment
				
									are not
				to be exceeded.
(B) Measurement of exhaust emissions
			 is to be
			 made with a sampling instrument no less precise than detector tubes.
(C) If the concentration of any of the
			 emissions listed in paragraph (A) of this rule is seventy- five per cent or
			 more of its threshold limit, the mine operator shall immediately make changes
			 to the use of the diesel equipment, mine ventilation, or other modifications to
			 the mining process to maintain a concentration of less than seventy-five per
			 cent of the threshold limit.
(D)
								
								Procedure if threshold limits are exceeded. If the
			 concentration of any of the emissions listed in paragraph (A) of this rule
			 exceeds the threshold limit, the mine operator shall immediately remove the
			 diesel equipment operating in that split of air from service and take
			 corrective action. After the mine operator has taken corrective action, the
			 diesel equipment may be returned to service in its regular operating mode for
			 emissions testing purposes only, and emissions testing
			  conducted immediately to assure
			 that the concentration does not exceed seventy-five per cent of the threshold
			 limit. The mine operator is to take corrective action until the concentration
			 does not exceed seventy-five per cent of the threshold limit and
			  not return the diesel equipment to
			 full operation until a threshold limit of less than seventy-five per cent is
			 achieved.
(E) In addition to the
			 other maintenance provisions set forth in this chapter, the mine
			 operator is
			 to make repairs and adjustments, and replacements as necessary, and
			 conduct testing in compliance with the following :
(1)
			 Certain repairs and adjustments to be performed only by mechanic authorized by
			 the engine manufacturer. Repair or adjustment of the fuel injection system
			 
									are to
			 be performed only by a qualified mechanic authorized by the engine
			 manufacturer;
(2) Complete testing
			 of the emissions system in accordance with rule
			 1501:10-2-21 of the
			 Administrative Code 
			 prior to putting any piece of diesel-powered equipment into service after any
			 repair or adjustment to the fuel delivery system, engine timing, or exhaust
			 emissions control and conditioning system; and
(3) Service and maintenance of filters and
			 exhaust system. Perform service and maintenance of the intake air
			 filter, exhaust particulate filter and the exhaust system
			  at specific time
			 intervals,
									 based
			 on the component manufacturer's recommendation, compliance with the engine or
			 emissions control operation specifications and, as needed, based on the
			 on-board diagnostics and/or emissions test results. The mine operator
			 
									is to
			 maintain accurate records of all such service and maintenance, and shall make
			 the records available for review by the chief or his or her representative and
			 the miners of the mine.