API RP 505 Recommended Practice for Classification of Locati…. API RP 505 November 1, 1997 Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2 This document applies to the classification of locations for both temporarily and permanently installed electrical equipment.
WebDescription / Abstract: API RP 505, 2nd Edition, August 2018 Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2. Purpose. The purpose of this recommended practice (RP) is to provide guidelines for classifying locations Class I, Zone 0, Zone 1, and Zone 2 at petroleum.
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