Texas Administrative Code › Title 30 - ENVIRONMENTAL QUALITY › Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY › Chapter 106 - PERMITS BY RULE › Subchapter W - TURBINES AND ENGINES › Section 106.512 - Stationary Engines and Turbines

Current through Reg. 49, No. 28; July 12, 2024
Gas or liquid fuel-fired stationary internal combustion
					 reciprocating engines or gas turbines that operate in compliance with the
					 following conditions of this section are permitted by rule.
(1) The facility shall be registered by
				  submitting the commission's Form PI-7, Table 29 for each proposed reciprocating
				  engine, and Table 31 for each proposed gas turbine to the commission's Office
				  of Permitting, Remediation, and Registration in Austin within ten days after
				  construction begins. Engines and turbines rated less than 240 horsepower (hp)
				  need not be registered, but must meet paragraphs (5) and (6) of this section,
				  relating to fuel and protection of air quality. Engine hp rating shall be based
				  on the engine manufacturer's maximum continuous load rating at the lesser of
				  the engine or driven equipment's maximum published continuous speed. A
				  rich-burn engine is a gas-fired spark-ignited engine that is operated with an
				  exhaust oxygen content less than 4.0% by volume. A lean-burn engine is a
				  gas-fired spark-ignited engine that is operated with an exhaust oxygen content
				  of 4.0% by volume, or greater.
(2)
				  For any engine rated 500 hp or greater, subparagraphs (A) - (C) of this
				  paragraph shall apply.
(A) The emissions of
				  nitrogen oxides (NO x) shall not exceed the following
				  limits:
(i) 2.0 grams per horsepower-hour
				  (g/hp-hr) under all operating conditions for any gas-fired rich-burn
				  engine;
(ii) 2.0 g/hp-hr at
				  manufacturer's rated full load and speed, and other operating conditions,
				  except 5.0 g/hp-hr under reduced speed, 80-100% of full torque conditions, for
				  any spark-ignited, gas-fired lean-burn engine, or any compression-ignited dual
				  fuel-fired engine manufactured new after June 18, 1992;
(iii) 5.0 g/hp-hr under all operating
				  conditions for any spark-ignited, gas-fired, lean-burn two-cycle or four-cycle
				  engine or any compression-ignited dual fuel-fired engine rated 825 hp or
				  greater and manufactured after September 23, 1982, but prior to June 18,
				  1992;
(iv) 5.0 g/hp-hr at
				  manufacturer's rated full load and speed and other operating conditions, except
				  8.0 g/hp-hr under reduced speed, 80-100% of full torque conditions for any
				  spark-ignited, gas-fired, lean-burn four-cycle engine, or any
				  compression-ignited dual fuel-fired engine that:
(I) was manufactured prior to June 18, 1992,
				  and is rated less than 825 hp; or
(II) was manufactured prior to September 23,
				  1982;
(v) 8.0 g/hp-hr
				  under all operating conditions for any spark-ignited, gas-fired, two-cycle
				  lean-burn engine that:
(I) was manufactured
				  prior to June 18, 1992, and is rated less than 825 hp; or
(II) was manufactured prior to September 23,
				  1982;
(vi) 11.0 g/hp-hr
				  for any compression-ignited liquid-fired engine.