Multi-Sector Air Pollutants Regulations

Marginal note:Three test runs

• 27 (1) A stack test consists of three consecutive test runs conducted within a period of 48 hours, each of which lasts at least 30 minutes and results in a determination of the boiler’s or heater’s NO_x emission intensity.

• Marginal note:Exception

  (1.1) However, if conducting a test run that lasts 30 minutes would not be both safe and technically feasible without risking damage to equipment, each test run must last as long as is safe and technically feasible without risking damage to equipment.

• Marginal note:Operating conditions for test runs

  (2) The test runs must be conducted while the boiler or heater meets the following conditions:

  • (a) it is operating with at least 50% of the input energy in its combustion chamber resulting from the introduction of gaseous fossil fuel;

  • (b) it is operating at at least 60% of its rated capacity or, if such operation would not be both safe and technically feasible without risking damage to equipment, at the highest percentage of its rated capacity that is safe and technically feasible without risking damage to equipment;

  • (c) it is operating at a steady state;

  • (d) it is operating with preheated air, if it is equipped to preheat air; and

  • (e) the same type of gaseous fossil fuel — natural gas or alternative gas — is introduced into its combustion chamber.