PART 2Stationary Spark-ignition Engines (continued)
Pre-existing Engines (continued)
Yearly Average NOx Emission Intensity Limits — on Election (continued)
Marginal note:Assignment of non-default NOx emission value
67 (1) A NOx emission value that is different from the default NOx emission value set out in subsection 66(2) may be assigned to a pre-existing engine, or a replacement unit that is a modern engine, if
(a) its NOx emission intensity — determined by means of the most recent performance test conducted on the engine and expressed in the same units, ppmvd15% or g/kWh, that are selected under paragraph 65(1)(c) for the subgroup to which the engine belongs — does not exceed that different NOx emission value; and
(b) the responsible person referred to in subsection 66(1) has registered the engine under subsection 97(3) and provides the Minister with that different NOx emission value for inclusion in the engine registry.
Marginal note:Taking effect of assignment
(2) The assignment takes effect as of
(a) the date on which the responsible person became an owner of the engine if, within 90 days after that date, they provide the Minister with the assigned NOx emission value of the engine for inclusion in the engine registry; and
(b) the date on which the responsible person provides the Minister with the assigned NOx emission value for inclusion in the engine registry, in any other case.
Marginal note:NOx emission intensity limit — non-default NOx emission values
68 A responsible person who assigns a NOx emission value to an engine that is different from its default NOx emission value must, as of that assignment, ensure that its NOx emission intensity — expressed in the same units, ppmvd15% or g/kWh, that are selected under paragraph 65(1)(c) for the subgroup to which the engine belongs — does not exceed a limit that is that different NOx emission value.
Determination of NOx Emission Intensity
Marginal note:NOx emission intensity limits
69 For the purpose of sections 54, 55, 57 and 58, paragraph 59(1)(b) and section 68, the NOx emission intensity of an engine must be determined by means of a performance test.
Marginal note:Three test runs
70 (1) A performance test consists of three consecutive test runs conducted within the same day, each of which lasts at least 20 minutes and results in a determination of the engine’s NOx emission intensity.
Marginal note:Operating conditions for test-runs
(2) Each test run must be conducted while the engine is
Marginal note:Sampling ports
Marginal note:Pre-existing engines without sampling port
(2) If a pre-existing engine does not have a sampling port that meets the requirements of any of those methods, each test run must
Marginal note:After-treatment control devices
(3) If an after-treatment control device is used, either
(a) the location of the sampling port described by subsection (1) must also be downstream of the device; or
(b) for the purpose of paragraph (2)(a), the location of the single traverse point must be downstream of the device — rather than the engine — at a distance from the device of at least twice the diameter of the exhaust pipe.
Marginal note:Concentration of NOx
Marginal note:Concentration of O2
(2) The concentration of O2 in the engine’s exhaust gas for each test run must be determined in accordance with
(a) the EPA method entitled Method 3 — Gas Analysis for the Determination of Dry Molecular Weight, set out in Appendix A-2 to Part 60 of the CFR;
(b) EPA Method 3A;
(c) the EPA method entitled Method 3B — Gas Analysis for the Determination of Emission Rate Correction Factor or Excess Air, set out in Appendix A-2 to Part 60 of the CFR;
(d) ASTM D6522-11; or
(e) the method entitled Flue and Exhaust Gas Analyses, published by the American Society of Mechanical Engineers and cited as ASME PTC 19.10-1981.
Marginal note:Moisture content
(3) For each test run, if the concentration of NOx in the engine’s exhaust gas is measured on a wet basis or if the NOx emission intensity of the engine is to be expressed in g/kWh, the moisture content in that gas must be determined in accordance with
Marginal note:Volumetric flow rate
(4) If the NOx emission intensity of the engine is to be expressed in g/kWh, the volumetric flow rate of the engine’s exhaust gas must be expressed in m3/h, at 25°C and 101.325 kPa, and be determined in accordance with
Marginal note:Simultaneous measurement
(5) For each test run, the following measurements must be taken simultaneously at the same traverse point in accordance with section 71:
73 If the NOx emission intensity of the engine is to be expressed in ppmvd15%, it must be determined for each test run by the formula
5.9Cd/(20.9 – %O2)
- is the concentration of NOx in the engine’s exhaust gas, expressed in ppmvd, determined at a given percentage of oxygen (%O2) in accordance with subsection 72(1); and
- is the number that represents the percentage of oxygen in the engine’s exhaust gas as determined by volume on a dry basis, based on the concentration of O2 determined in accordance with subsection 72(2).
- Date modified: