Selection of Reference Natural Gas Category in Shenzhen City

Considering the multiplicity of existing and potential natural gas source in Shenzhen City, gas exchangeability, natural gas category and gas appliance adaptability, the selection of reference natural gas in Shenzhen City is discussed. The natural gas utilized in Shenzhen City should accord with the technical indexes of category 1 and 2 natural gas in Natural Gas (GB 17820-1999) and the requirement for methane volume fraction in General Characteristics of Liquefied Natural Gas (GB/T 19207-2003). The reference gas category is determined against Classification and General Characteristics of City Gas (GB/T 13611-2006). The existing Australian LNG and Xinjiang LNG utilized in Shenzhen City accord with 12 T. In consideration of potential natural gas source, 12 T should be selected as the reference natural gas in Shenzhen City.