API RP 500-2012 分类为 Class I Division 1 和 Division 2 的石油设施电气装置位置分类的推荐做法(第三版;勘误表:2014年1月)
Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I@ Division 1 and Division 2 (Third Edition; ERRATA: JANUARY 2014)