AS NZS IEC 60079.10.1-2022 Sup 1-2022 PDF

Full title and description

AS/NZS IEC 60079.10.1:2022 Sup 1:2022 — Explosive atmospheres, Part 10.1: Classification of areas – Explosive gas atmospheres, including Supplement 1 (Commentary) which provides supporting commentary and additional guidance for the application of AS/NZS IEC 60079.10.1:2022. The main adoption aligns the joint Australian/New Zealand publication with IEC 60079-10-1 (area classification — gas).

Abstract

This publication defines principles and procedures for the classification of areas where flammable gases, vapours or mists may be present, establishing zone designations to support the selection, installation and maintenance of equipment for use in hazardous (explosive) gas atmospheres. Supplement 1 offers explanatory commentary and examples to clarify the application of the main standard.

General information

• Status: Current.
• Publication date: 24 June 2022 (AS/NZS IEC 60079.10.1:2022) and Supplement 1 published 24 June 2022.
• Publisher: Standards Australia / Standards New Zealand.
• ICS / categories: 13 – Environment. Health protection. Safety; 13.100 – Occupational safety. Industrial hygiene; 13.230 – Explosion protection; 29 – Electrical engineering; 29.260 – Electrical equipment for working in special conditions; 29.260.20 – Electrical apparatus for explosive atmospheres.
• Edition / version: 1st edition (2022) adoption of IEC 60079-10-1:2020; Supplement 1:2022 (1st edition commentary).
• Number of pages: Main standard: 103 pages; Supplement 1 (Commentary): 136 pages.

Scope

Specifies requirements and a methodology for the classification of areas where explosive gas atmospheres may occur, including identification of zones (Zone 0, Zone 1, Zone 2), assessment of ignition risks, consideration of ventilation, gas release characteristics and equipment ignition sources. The Supplement provides commentary, worked examples and explanatory material intended to aid correct application of the classification method in Australian and New Zealand contexts.

Key topics and requirements

• Hazardous-area classification methodology for flammable gas atmospheres (zone concept: Zone 0, Zone 1, Zone 2).
• Guidance on assessing release sources, release quantity and frequency, and evaluation of ventilation and dispersion.
• Criteria for estimating extent and likelihood of explosive atmospheres and for assigning appropriate zone boundaries.
• Consideration of gas groups, temperature classes and relevant ignition sources when matching equipment to classified areas.
• Documentation, competence and risk-assessment principles for hazardous-area classification teams.
• Commentary and worked examples in Supplement 1 to support interpretation and practical application of the normative clauses.

Typical use and users

Used by engineers, safety and process personnel, facility designers, asset owners, inspection and certification bodies, regulators and consultants involved in the design, operation and maintenance of facilities where flammable gases or vapours may be present (petrochemical, oil & gas, chemical processing, storage and handling, fuel dispensing and similar installations).

Related standards

Closely related to IEC/ISO and AS/NZS publications in the 60079 series (for example IEC 60079-10-2 for combustible dust, AS/NZS 60079.14 for electrical installations in explosive atmospheres, IEC 60079-1, IEC 60079-17). It supersedes earlier national editions of AS/NZS 60079.10.1 (2009) by adopting the 2020/2022 edition of the IEC text.

Keywords

explosive atmospheres, hazardous area classification, gas atmospheres, zone classification, IEC 60079-10-1, area classification commentary, ventilation, ignition sources, flammable gas, AS/NZS.

FAQ

Q: What is this standard?

A: AS/NZS IEC 60079.10.1:2022 (with Supplement 1:2022) is the joint Australian/New Zealand adoption of the IEC standard for classification of areas where explosive gas atmospheres may be present, with a companion commentary supplement to aid application.

Q: What does it cover?

A: It covers the methodology for identifying and classifying hazardous (explosive) gas atmospheres into zones, the factors to consider when assessing release and dispersion, and guidance for documenting and implementing area classification so appropriate equipment and protective measures can be selected.

Q: Who typically uses it?

A: Process and electrical engineers, safety managers, facility designers, regulatory inspectors, certification bodies and consultants working in industries where flammable gases or vapours are present (e.g., oil & gas, petrochemical, chemical processing, fuel storage and dispensing).

Q: Is it current or superseded?

A: The 2022 adoption is the current AS/NZS publication of IEC 60079-10-1 as of its publication date (24 June 2022). It supersedes earlier AS/NZS editions such as AS/NZS 60079.10.1:2009 and aligns with IEC 60079-10-1:2020; users should check for any later rulings or amendments issued by Standards Australia (for example, rulings or corrigenda published subsequently).

Q: Is it part of a series?

A: Yes — it is part of the IEC/AS/NZS 60079 series addressing explosive atmospheres (equipment, installation, inspection and design sub-parts) and is intended to be used alongside related parts of the 60079 family for comprehensive hazardous-area management.

Q: What are the key keywords?

A: Hazardous area classification, explosive atmospheres, zone 0/1/2, flammable gas, IEC 60079-10-1, Supplement 1 commentary, ventilation, ignition sources, AS/NZS.