250 R.I. Code R. 250-RICR-120-05-27.5

Current through December 26, 2024

Section 250-RICR-120-05-27.5 - Definitions

A. Unless otherwise expressly defined in this section, the terms used in this regulation shall be defined by reference to Part 0 of this Subchapter (General Definitions). As used in this regulation, the following terms shall, where the context permits, be construed as follows:

1. "Actual emissions" means the actual rate of emissions of a pollutant from a piece of equipment or a pollutant-emitting activity as determined in accordance with §§ 27.5(A)(1)(a) through (c) of this Part:

a. In general, actual emissions as of a particular date shall equal the average rate, in tons per year, at which the unit actually emitted the pollutant during a two-year period which precedes the particular date and which is representative of normal stationary source operation. Actual emissions shall be calculated using the equipment's or activity's actual operating hours, production rates and types of materials processed, stored or combusted during the selected time period;

b. The Director may presume that stationary source specific allowable emissions for the equipment or activity are equivalent to the actual emissions of the equipment or activity;

c. For any equipment or activity which has not begun normal operations on the particular date, actual emissions shall equal the potential to emit of the equipment or activity on that date.

2. "Combined cycle gas turbine" means any stationary gas turbine which recovers heat from the gas turbine exhaust gases to heat water or generate steam.

3. "Combustion turbine" means any simple cycle gas turbine or any combined cycle gas turbine including the duct burner portion thereof.

4. "Emergency standby internal combustion engine" means an internal combustion engine operated only as a mechanical or electrical power source for a stationary source when the primary power source has been rendered inoperable. This does not include power interruptions pursuant to an interruptible power service agreement.

5. "Equivalent control" means a control system that may be substituted for the required control system(s). The stationary source applying to use an equivalent control must demonstrate to the satisfaction of the Director and EPA that the emission reductions achieved are equal to or greater than the emission reductions required by the regulation. Appropriate test methods or other replicable criteria in accordance with Department and EPA guidance must be used to demonstrate equivalence.

6. "Industrial-commercial-institutional boiler" means a device that combusts any fuel and produces steam or heats water or any other heat transfer medium. This term does not include utility boilers used by electric utilities to generate electricity.

7. "Internal combustion engine" means any engine in which power, produced by heat and/or pressure developed in the engine cylinder(s) by burning a mixture of air and fuel, is subsequently converted to mechanical work by means of one (1) or more pistons.

8. "Lean-burn engine" means an internal combustion engine where the amount of oxygen in the exhaust gases is one percent (1%) or more, by weight.

9. "Liquefied petroleum (LP) gas" means liquefied petroleum gas as defined by the American Society for Testing and Materials in ASTM D 1835-13, "Standard Specification for Liquefied Petroleum (LP) Gases."

10. "Low NOx burner" means a commercially available modified combustion burner designed to minimize NOx formation through low excess air firing, controlled mixing of primary combustion air and fuel (staged air or staged fuel), reducing peak furnace temperature or other burner designs judged to be low NOx burners by the Director and EPA based on a review of evidence submitted by the subject stationary source.

11. "Rich-burn engine" means an internal combustion engine where the amount of oxygen in the engine exhaust gases is less than one percent (1%) by weight.

12. "Simple cycle gas turbine" means any stationary gas turbine which does not recover heat from the gas turbine exhaust gases to preheat the inlet combustion air to the gas turbine, or which does not recover heat from the gas turbine exhaust gases to heat water or generate steam.

13. "Utility boiler" means a device, with a heat input capacity of 250 million Btu per hour or greater, that combusts any fuel and produces steam for the primary purpose of generating electricity. This term does not include combustion turbines.

250 R.I. Code R. 250-RICR-120-05-27.5

Amended effective 12/26/2018