Gas Transmission : The supply of line function services by means of high pressure gas pipelines operated at a gauge pressure exceeding 2,000 kilopascals
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}