Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:4:p2
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 4 (pt 2/13)
Character Range: 110949–114015

turbine measuring systems—the publication entitled AGA Report No. 7, Measurement of Natural Gas by Turbine Meter (2006), published by the American Gas Association on 1 January 2006;
 (c) for positive displacement measuring systems—the publication entitled ANSI B109.3—2000, Rotary Type Gas Displacement Meters, published by the American Gas Association on 13 April 2000.
 (5) Measurements, calculations and procedures used in determining volume may also be made in accordance with an equivalent internationally recognised documentary standard or code.
 (6) Measurements must comply with Australian legal units of measurement.

1.19I  Volumetric measurement—super‑compressed greenhouse gas stream
 (1) For subparagraph 1.19G(2)(a)(ii), volumetric measurement of a super‑compressed greenhouse gas stream must be in accordance with this section.
 (2) If, in determining volume in relation to the super‑compressed greenhouse gas stream, it is necessary to correct for deviation from the ideal gas law, the correction must be determined using the relevant method contained in the publication entitled AGA Report No. 8, Compressibility Factor of Natural Gas and Related Hydrocarbon Gases (1994), published by the American Gas Association on 1 January 1994.
 (3) The measuring equipment used must calculate super‑compressibility by:
 (a) if the measuring equipment is category 3 or 4 equipment in accordance with column 2 the table in subsection 1.19G(4)—using composition data; or
 (b) if the measuring equipment is category 1 or 2 equipment in accordance with column 2 of the table in subsection 1.19G(4)—using an alternative method set out in the publication entitled AGA Report No. 8, Compressibility Factor of Natural Gas and Related Hydrocarbon Gases (1994), published by the American Gas Association on 1 January 1994.

1.19J  Gas measuring equipment—requirements
  For paragraph 1.19G(2)(b), gas measuring equipment that is category 3 or 4 equipment in accordance with column 2 of the table in subsection 1.19G(4) must comply with the following requirements:
 (a) if the equipment uses flow devices—the requirements relating to flow devices set out in section 1.19K;
 (b) if the equipment uses flow computers—the requirement relating to flow computers set out in section 1.19L;
 (c) if the equipment uses gas chromatographs—the requirements relating to gas chromatographs set out in section 1.19M.

1.19K  Flow devices—requirements
 (1) If the measuring equipment has flow devices that use orifice measuring systems, the flow devices must be constructed in a manner that ensures that the maximum uncertainty of the discharge coefficient is not greater than ±1.5%.
Note: The publication entitled AGA Report No. 3, Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids Part 3: Natural Gas Applications, published by the American Gas Association in August 1992, sets out a manner that ensures that the maximum uncertainty of the discharge coefficient is not greater than ±1.5%.
 (2) If the measuring equipment has flow devices that use turbine measuring