Mobile Installation : An installation that is designed or intended to be moved from place to place without major dismantling or modification, whether or not it has its own motive power
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}