Multi-Sector Air Pollutants Regulations (SOR/2016-151)

Regulations are current to 2019-08-28

PART 2Stationary Spark-ignition Engines (continued)

Determination of NOx Emission Intensity (continued)

Performance Tests (continued)

Marginal note:g/kWh

  •  (1) If the NOx emission intensity of the engine is to be expressed in g/kWh, it must be determined for each test run by the formula

    (1.88 × 10-3 × C × Q × T)/BW

    where

    C
    is the concentration of NOx in the engine’s exhaust gas, expressed in parts per million by volume, determined at a given percentage of oxygen (%O2) in accordance with subsection 72(1);
    Q
    is the volumetric flow rate of the engine’s exhaust gas, expressed in m3/h, determined in accordance with subsection 72(4);
    T
    is the duration of the test run, expressed in hours to two decimal places; and
    BW
    is the brake work of the engine during the test run, expressed in kWh.
  • Marginal note:Wet or dry basis

    (2) The elements C and Q described in subsection (1) must be expressed on the same basis, whether wet or dry.

Marginal note:NOx emission intensity — average

 The NOx emission intensity of the engine determined by means of a performance test is the average of the three determinations — one for each test run — of its NOx emission intensity.

Marginal note:NOx emission intensity — deemed days

 The average described in section 75 is deemed to be the NOx emission intensity of the engine

  • (a) for the day on which the performance test is conducted; and

  • (b) for every subsequent day until its NOx emission intensity is determined based on another performance test.

Marginal note:Performance tests

 In addition to a performance test referred to in section 69, a performance test to determine the NOx emission intensity, expressed in ppmvd15% or g/kWh, of a regular-use engine must be conducted

  • (a) within 12 months after the first hour of its operation after it first becomes a regular-use engine, if it is a modern engine that has a rated brake power of at least 75 kW;

  • (b) within 12 months after any of sections 57 to 59 first applies in respect of the engine;

  • (c) within 90 days after a person becomes, on a given date, an owner of an engine that is subject to a NOx emission intensity limit referred to in any of sections 54 and 57 to 59, if

    • (i) they do not have a record of the information referred to in paragraph 100(i) and section 6 of Schedule 10 in respect of the most recent performance test, if any, conducted on the engine, and

    • (ii) that given date occurs

      • (A) less than 90 days before the end of the 12-month period referred to in paragraph (a) or (b), or

      • (B) after the end of that 12-month period; and

  • (d) before an assignment, by a responsible person under subsection 67(1), of a NOx emission value to an engine that is different from its default NOx emission value described in subsection 66(2), if

    • (i) the NOx emission value that they propose to assign is lower than the NOx emission intensity for the engine determined by means of the most recent performance test conducted on the engine, or

    • (ii) that responsible person does not have a record of the information referred to in paragraph 100(i) and section 6 of Schedule 10 in respect of that most recent performance test.

Marginal note:Subsequent performance test

 An engine with a rated brake power of at least 375 kW on which a performance test has been conducted under section 77 or this section must have a subsequent performance test conducted to determine its NOx emission intensity, expressed in ppmvd15% or g/kWh,

  • (a) for a lean-burn engine, by the earlier of the completion of 17,520 hours of operation since the most recent of those performance tests and 36 months after that most recent performance test; and

  • (b) for a rich-burn engine,

    • (i) by the earlier of the completion of 8,760 hours of operation since the most recent of those performance tests and 36 months after that most recent performance test, if the concentration of NOx in the exhaust gas has been determined — under section 89 for at least one emissions check conducted in each 90-day period in accordance with paragraph 79(b) — not to exceed the NOx emission intensity limit, expressed in ppmvd15%, applicable to the engine, and

    • (ii) by the earlier of the completion of 4,380 hours of operation since the most recent of those performance tests and nine months after that most recent performance test, in any other case.

Emissions Checks

Marginal note:When emissions check required for certain engines

 An emissions check to determine the concentration of NOx in the exhaust gas must be conducted

  • (a) on a lean-burn engine with a rated brake power of at least 375 kW,

    • (i) within 365 days after the assignment of a default emission value under subsection 66(1), and

    • (ii) within 365 days after the most recent performance test conducted on the engine under section 77 or 78 or the most recent emissions check conducted on the engine under this section; and

  • (b) on a rich-burn engine referred to in subparagraph 78(b)(i), within 90 days after the most recent performance test conducted on the engine under section 77 or 78 or the most recent emissions check conducted on the engine under this section.

Marginal note:Using electrochemical analyzer

  •  (1) An emissions check must be conducted by means of an electrochemical analyzer.

  • Marginal note:Electrochemical analyzers

    (2) The electrochemical analyzer must

    • (a) be capable of simultaneously measuring the concentrations, in an engine’s exhaust gas, of each of the following gases by means of an electrochemical cell for each of those gases:

      • (i) O2, CO and NO, for

        • (A) a rich-burn engine that is equipped with a three-way catalyst, and

        • (B) an engine whose NOx in the exhaust gas consists of at most 10% NO2, based on the results of the most recent performance test conducted on it, and

      • (ii) O2, CO, NO and NO2, in any other case;

    • (b) have a resolution, as specified by its manufacturer, that is at most

      • (i) 1 ppm, for CO, NO and, if applicable, NO2, and

      • (ii) 0.1%, for O2; and

    • (c) be equipped with a device that monitors the temperature of the NO electrochemical cell.

Marginal note:Calibration error checks and interference responses

 Before an electrochemical analyzer is used for the first time to conduct an emissions check on an engine,

  • (a) an initial sequence of calibration error checks must be conducted on the cells of the analyzer in accordance with section 83; and

  • (b) an initial determination of the CO and NO interference responses of the cells of the analyzer must be conducted in accordance with section 84 for each of the calibration error checks in the sequence.

Marginal note:Analyzer — operation and maintenance

  •  (1) An electrochemical analyzer must be operated and maintained in accordance with the manufacturer’s specifications, including the specifications on

    • (a) introducing gas into the analyzer at a constant flow rate within the range specified by the manufacturer; and

    • (b) rinsing the analyzer with fresh air for the period recommended by the manufacturer between each introduction of gas into the analyzer.

  • Marginal note:Analyzer — set-up

    (2) Before a calibration error check or an emissions check is conducted in a given location,

    • (a) the measurement system must be verified to have no leaks;

    • (b) if applicable, the measurement system must be verified to have sufficient scrubbing agent in good working order to conduct the check;

    • (c) after those verifications, the analyzer must be turned on at that location for the longer of

      • (i) 20 minutes, and

      • (ii) the period that is necessary for the temperature of the NO electrochemical cell to be within 2°C of ambient air temperature; and

    • (d) after the end of the applicable period described in paragraph (c), the analyzer must be zeroed at that location by

      • (i) using the zeroing function of the analyzer, or

      • (ii) turning it off and on.

  • Marginal note:Analyzer — measurement system for introduction of gas

    (3) The measurement system for the introduction of gas into the analyzer must

    • (a) remove condensation continuously from that gas by means of a chilled condenser or similar device; and

    • (b) be non-reactive with NO2.

 
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