New Zealand Legislation: Regulations

27 Flaring of gas

• (1) If gas collected at a landfill is destroyed by flaring,—

  • (a) the system for the principal flare or flares must—

    • (i) comply with the requirements in subclause (2); or

    • (ii) achieve at least the same effect as the system in subclause (2); and

  • (b) the system for the backup flare must—

    • (i) comply with the requirements in subclause (3); or

    • (ii) achieve at least the same effect as the system in subclause (3).

  (2) The system for a principal flare must—

  • (a) have a flame arrestor; and

  • (b) have an automatic backflow prevention device, or an equivalent device, between the principal flare and the landfill; and

  • (c) have an automatic isolation system that ensures that, if the flame is lost, no significant discharge of unburnt gas from the flare occurs; and

  • (d) have a continuous automatic ignition system; and

  • (e) have a design that achieves a minimum flue gas retention time of 0.5 seconds; and

  • (f) be designed and operated so that gas is burned at a temperature of at least 750°C; and

  • (g) have a permanent temperature indicator; and

  • (h) have adequate sampling ports to enable emission testing to be undertaken; and

  • (i) provide for safe access to sampling ports while any emission tests are being undertaken.

  (3) The system for a backup flare must have—

  • (a) a flame arrestor; and

  • (b) an automatic backflow prevention device, or an equivalent device, between the backup flare and the landfill; and

  • (c) an automatic isolation system that ensures that, if the flame is lost, no significant discharge of unburnt gas from the flare occurs; and

  • (d) a continuous automatic ignition system.

  (4) A principal flare must be operated at all times unless it has malfunctioned or is shut down for maintenance.

  (5) A backup flare must be operated if, and only if, a principal flare is not operating.