Definition(s)


Type 1 Open Drains

Type 1 Open Drains are open drains designed to be operated in such a manner to prevent flammables from entering or exiting the drain system.

API RP 500, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, Third Edition, December 2012, Global Standards

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