Legal Metrology Act, 2014 (Act No. 9 of 2014)

Regulations

Legal Metrology Regulations, 2017

Part XI : Measuring instruments and containers used for prescribed purposes

107. Measuring devices and systems for measurement of cryogenic liquids and specified liquid gases
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(1)
(a) All measuring systems for measuring the mass of liquid gases specified in clause 1.4 of SANS 319 when contained in vertical tanks of known dimensions and using the pressure differential method for level determination must comply with the requirements of SANS 319.
(b) From the date of implementation of this regulation no measuring system for liquid gases using the pressure differential method may be fitted to a new installation incorporating a horizontal tank for use for a prescribed purpose.
(c) A horizontal tank fitted with a measuring system for liquid gases using the pressure differential method and used for a prescribed purpose prior to the date of implementation of this regulation, is exempted from compliance with requirements for tanks provided that the measuring system is verified according to the requirements of Annex AA of SANS 319.
(d) Measuring systems for static measurement of the mass or volume of liquid gases in tanks using methods other than a pressure differential method, must comply with any applicable provisions of the regulations in this Part, consistent with the design and method of measurement.

 

(2)
(a) All measuring devices and systems, excluding mass flow meters, for the dynamic measurement of cryogenic liquids, must comply with the requirements of SANS 344.
(b) Mass flow meters must comply with the provisions of regulation 108, pertaining to liquid measuring systems other than water.
(c) Meters and systems for dynamic measurement of liquefied carbon dioxide, or nitrous oxide must comply with the provisions of regulation 108, pertaining to liquid measuring systems other than water.

 

(3)
(a) Unless exempted in terms of Annex BB of SANS 319, measuring systems to which the requirements of subregulation (1)(a) apply must be verified in accordance with the requirements of Annex AA of SANS 319.
(b) Measuring devices and systems to which the requirements of subregulation (2)(a) apply must be verified in accordance with the requirements of annex AA of SANS 344.

 

(4) In addition to any requirement of the Act or any other applicable regulation in terms of the Act and unless the user is exempted by any provision in the Act or any other applicable regulation in terms of the Act, the requirements of Annex BB of SANS 319 and Annex BB of SANS 344, as applicable, must be complied with by persons using, for a prescribed purpose, the instruments to which subregulation (1)(a) and subregulation (2)(a) apply.