Archived: Proposed guidelines: reducing nitrogen oxide emissions from stationary combustion turbines: chapter 2

2. Definitions

2.1. The following definitions apply in these Guidelines:

"Calendar year" means the period of 12 consecutive months that begins on January 1.

"CFR" means Title 40, Chapter I of the Code of Federal Regulations of the United States. 

"Cogeneration" means the integrated operation of one or more combustion turbines and steam generators that recover any heat from combustion turbine exhaust gases to supply steam for useful purposes other than electricity generation (e.g., to a heating system or an industrial process).

"Combined cycle" means the integrated combination of one or more combustion turbines and steam turbines for the production of electricity using the same source of thermal energy.

"Combustion turbine" means an engine that operates according to the Brayton thermodynamic cycle, which burns fuel and allows the products of combustion at a high temperature to expand through a rotating power turbine to produce motive power.

"Commissioning date" means the first day on which a combustion turbine begins to produce electricity or motive power.

"Continuous Emissions Monitoring System (CEMS)" means equipment for the sampling, conditioning and analyzing of emissions from a given source and recording of data related to those emissions.

"Emergency combustion turbine" means a combustion turbine that operates only in emergency situations, including to produce power for critical networks or equipment during electric power interruptions, to pump water in the case of fire or flood, or for equipment or facility re-start.

"Natural gas" means a naturally occurring fluid mixture of hydrocarbons (e.g., methane, ethane or propane) produced in geological formations beneath the Earth’s surface that maintains a gaseous state at standard atmospheric temperature and pressure under ordinary conditions. Natural gas is composed of at least 85% methane by volume, and it excludes landfill gas, digester gas, refinery gas, sour gas, blast furnace gas, coal-derived gas, producer gas, coke oven gas or any gaseous fuel produced in a process that might result in highly variable sulphur content or heating value.

"New combustion turbine" means a combustion turbine whose commissioning date is two years after publication of these Guidelines or later.

"Nitrogen oxide (NOx)" means oxides of nitrogen, which is the sum of nitric oxide (NO) and nitrogen dioxide (NO2).

"Operator" means a person who operates or has the charge, management or control of a combustion turbine.

"Part-load operation" means the operation of the combustion turbine below 70% of its power rating.

"Peaking combustion turbine" means a combustion turbine that is operated for 1500 hours or less within a calendar year.

"Predictive Emission Monitoring System (PEMS)" means all of the equipment and related activities required to determine an emission concentration or an emission rate. This may include processor control devices, sensors, operating parameter measurements, conversion equations, graphs or computer programs to produce results in units of the applicable emission limit or standard.

"Power rating" means normal maximum continuous rating (in megawatts - MW) at International Organization for Standardization (ISO) 3977-2 environmental design point conditions of ambient air: 15°C (288K), 60% relative humidity and 101.3 kilopascals barometric pressure.

"Shut-down period" means the period of time between the moment when the combustion turbine is operating at normal operating mode and the moment when it is non-operational.

"Simple cycle combustion turbine" means a combustion turbine that operates without harnessing the turbine exhaust heat for useful purposes.

"Start-up period" means the period of time between the moment when the combustion turbine is non-operational and the moment when it is operating at normal operating mode.

"The Act" means the Canadian Environmental Protection Act, 1999.

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