API 505:2018

Superseded

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API Recommended Practice 505 Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1,and Zone 2

Available format(s)

PDF

Language(s)

English

Published date

29-08-2018

Publisher

American Petroleum Institute

Superseded date

15-01-2025

Superseded by

API RP 505:2025

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Summarise this standard

AI-generated summary

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 facilities for the selection and installation of electrical equipment.

DocumentType	Standard
Pages	177
ProductNote	This product is unavailable in Cuba, Iran, North Korea, Syria THIS STANDARD REFERS TO ABS 2, ABS 6,CSA Plus 2203
PublisherName	American Petroleum Institute
Status	Superseded
SupersededBy	API RP 505:2025
Supersedes	API 505 : 1998

Frequently Asked Questions

API 505 provides methods for classifying petroleum facility locations where flammable gases or vapours may be present. In practice it is applied by electrical and process safety engineers classifying hazardous locations in petroleum facilities.

No — API 505 is a United States standard published by American Petroleum Institute (API), with its listed region as United States.

API 505 is American Petroleum Institute (API)'s standard for hazardous location classification, while AS/NZS 60079.14 covers explosive atmospheres (Australia and New Zealand). API 505 provides methods for classifying petroleum facility locations where flammable gases or vapours may be present. AS/NZS 60079.14 covers equipment, area classification, installation, inspection or protection methods for electrical systems in explosive atmospheres.

API 505 is used by electrical and process safety engineers classifying hazardous locations in petroleum facilities. It is a United States standard published by American Petroleum Institute (API).

API 505 provides methods for classifying petroleum facility locations where flammable gases or vapours may be present. It is a United States standard published by American Petroleum Institute (API).

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API 505:2018

API Recommended Practice 505 Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1,and Zone 2

Abstract

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Standards Referenced By This Book

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What is API 505 used for?

Is API 505 an Australian standard?

What is the difference between API 505 and AS/NZS 60079.14?

Who is API 505 written for?

What is the scope of API 505?