EN 60079-5:2015/prA2:2026

• Status: Not Published
• Publication Date: 02-Mar-2028
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• Technical Committee: CLC/TC 31 - Electrical apparatus for explosive atmospheres - General requirements
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 14-Aug-2026
• Due Date: 02-Jun-2027
• Completion Date: 14-Aug-2026
• Directive: Harmonized Standard2014/34/EU - Directive 2014/34/EU Of The European Parliament And Of The Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres (recast)
• Mandate: M/596 - [C(2023)4798] Commission Implementing Decision of 20.7.2023 on a standardisation request as regards equipment and protective systems intended for use in potentially explosive atmospheres in support of Directive 2014/34/EU (ATEX) of the European Parliament and of the Council
• Ref Project: SIST EN 60079-5:2015/oprA2:2026 - Explosive atmospheres - Part 5: Equipment protection by powder filling "q"

• Amends: EN 60079-5:2015 - Explosive atmospheres - Part 5: Equipment protection by powder filling "q"
• Effective Date: 23-Jun-2026

Overview

EN 60079-5:2015/prA2:2026 is the second amendment to the European standard for equipment protection by powder filling "q" in explosive atmospheres. Developed by CLC and aligned with IEC guidelines, this amendment enhances the requirements for safeguarding electrical apparatus used in hazardous environments where explosive gases, vapors, or dusts may be present. The standard focuses on the use of powder filling techniques as a critical method for preventing ignition sources within equipment, addressing essential updates and clarifications to support ongoing reliability and safety in these high-risk settings.

Key Topics

• Powder Filling Protection “q”
  Refines protective measures using quartz or solid glass particle powder for electrical equipment in explosive atmospheres.

• Material Specification Updates
  Specifies that filling material must be quartz or solid glass particles, classified by particle size using updated methods compliant with ISO 13322-2 for visual analysis or established mechanical sieving standards (ISO 2591-1, ISO 3310-1, ISO 3310-2).

• Confirmation of Filling Material Suitability
  Introduces improved testing criteria for filling materials, ensuring low water content and proper insulation resistance prior to use, which ensures effective powder flow and void-free filling during the manufacturing process.

• Procedural Flexibility
  Allows both visual and mechanical procedures for assessing particle sizes, supporting broader practical application and simplifying compliance for manufacturers.

• Clarified Insulation Resistance Testing
  Clarifies that the primary role of the routine insulation resistance test is to verify the dryness and flow properties of the powder, not strictly the ambient humidity, thus removing unnecessary restrictions and focusing on functional material suitability.

Applications

The requirements set out in EN 60079-5:2015/prA2:2026 are essential for industries that operate in hazardous locations with potentially explosive atmospheres, such as:

• Chemical and Petrochemical Plants
  Ensuring critical instrumentation and control equipment is protected using powder filling techniques, minimizing the risk of ignition.

• Oil & Gas Facilities
  Safeguarding electronic devices and junction boxes in refineries and offshore platforms using compliant powder filling methods.

• Manufacturing and Processing
  Applicable to food processing, pharmaceutical production, and dust-prone factories, supporting safe equipment operation where explosive dusts can accumulate.

• Mining Operations
  Protection of signaling, communication, and automation devices used in underground or surface mines.

Through its updated procedures and testing methods, the standard supports product certification, quality assurance, and regulatory compliance for manufacturers and operators of explosion-protected equipment.

Related Standards

Several international and European standards are related to the protective concepts outlined in EN 60079-5:

• IEC 60079 Series
  General requirements and specific protection techniques for electrical apparatus in explosive atmospheres.

• ISO 13322-2
  Particle size analysis - Image analysis methods, referenced for dynamic image analysis of powder filling material.

• ISO 2591-1, ISO 3310-1, ISO 3310-2
  Mechanical sieving and particle sizing standards integral to confirming the suitability of filling materials.

• EN 60079-0
  General requirements for electrical equipment in explosive atmospheres, providing baseline safety criteria.

• EN 60079-7 (Increased safety "e") & EN 60079-15 (Type of protection "n")
  Complementary protection methods that may be used alongside powder filling techniques depending on specific equipment needs.

By ensuring up-to-date compliance with EN 60079-5:2015/prA2:2026, industries can achieve higher levels of operational safety, reduce explosion risks, and meet stringent regulatory demands for hazardous area equipment.

SLOVENSKI STANDARD
01-oktober-2026
Eksplozivne atmosfere - 5. del: Zaščita opreme s polnjenjem s peskom "q" -
Dopolnilo 2
Explosive atmospheres - Part 5: Equipment protection by powder filling "q"
Explosionsgefährdete Bereiche - Teil 5: Geräteschutz durch Sandkapselung "q"
Amendement 2 - Atmosphères explosives - Partie 5: Protection du matériel par
remplissage pulvérulent "q"
Ta slovenski standard je istoveten z: EN 60079-5:2015/prA2:2026
ICS:
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

31/1982/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60079-5/AMD2 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-08-14 2026-11-06
SUPERSEDES DOCUMENTS:
31/1977/RR
IEC TC 31 : EQUIPMENT FOR EXPLOSIVE ATMOSPHERES
SECRETARIAT: SECRETARY:
United Kingdom Mr Tom Stack
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC,
is drawn to the fact that this Committee Draft for Vote (CDV) is
submitted for parallel voting.
The CENELEC members are invited to vote through the CENELEC
online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which t hey are aware
and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses to be
included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC c lauses. (SEE
AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Amendment 2 – Explosive atmospheres – Part 5: Equipment protection by powder filling "q"

PROPOSED STABILITY DATE: 2030
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IEC CDV 60079-5:2015/AMD2 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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EXPLOSIVE ATMOS
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