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Show BACKGROUND 2 DEVELOPMENT OP NATIONAL EMISSION GUIDELINES FOR STATIONARY COMBUSTION TURBINES As part of the NO /VOC Management Plan published in November 1990 by the Canadian x Council of Ministers of the Environment (CCME), Environment Canada has led the development of a guideline for New Source Performance Standards for stationary gas turbines. The document is a national guideline for new and modified engines, and was arrived at through consultation with users, manufacturers, provincial governments and other organizations. It is one of four guidelines aimed at reducing NOx emissions from stationary sources, as part of the national prevention program in Phase I of the NOx/VOC Plan. This program is part of a 3-phase plan to meet a national ozone air quality objective of 82 ppb by the year 2005. These emission guidelines for stationary combustion sources will establish minimum targets for national standards and may act as a model for regulatory action by individual provinces or regions. Other CCME guidelines under development include those for large utility boilers, industrial/commercial boilers, process heaters/ cement kilns, and stationary reciprocating engines. 1. 0 GAS TURBINES IN CANADA Gas turbines are thermodynamic engines which use a steady flow of a gas (namely air), compressed and fired with gaseous or liquid fuel, which is then expanded through a turbine to generate output power. Most of the fuel energy is used to drive the air compressor, and the remaining energy (about one-third) is available for thrust in an aircraft engine, for marine propulsion, or as shaft power for stationary applications such as pipeline compression and electrical power production. These combustion turbines, or gas turbines as they are more commonly referred to, comprise over 700 units in Canada serving these latter stationary applications. There will be about 7000 MW in service by the end of 1994, about equally split between gas compression and electricity production (see Appendix A). • Gas Turbine AXlAl.,FLOW COMPIUi$OR \ LOW~ 1'URBINE ~ EXlIAU8r it |