BS EN 1127-1:2019 - Explosive atmospheres. Explosion prevention and protection. Basic concepts and methodology

BS EN 1127-1:2019

Explosive atmospheres. Explosion prevention and protection. Basic concepts and methodology

Status : Current   Published : August 2019



This document specifies methods for the identification and assessment of hazardous situations leading to explosion and the design and construction measures appropriate for the required safety. This is achieved by:

  • risk assessment;

  • risk reduction.

The safety of equipment, protective systems and components can be achieved by eliminating hazards and/or limiting the risk, i.e. by:

  1. appropriate design (without using safeguarding);

  2. safeguarding;

  3. information for use;

  4. any other preventive measures.

Measures in accordance with a) (prevention) and b) (protection) against explosions are dealt with in Clause 6, measures according to c) against explosions are dealt with in Clause 7. Measures in accordance with d) are not specified in this document. They are dealt with in EN ISO 12100:2010, Clause  6.

The preventive and protective measures described in this document will not provide the required level of safety unless the equipment, protective systems and components are operated within their intended use and are installed and maintained according to the relevant codes of practice or requirements.

This document specifies general design and construction methods to help designers and manufacturers in achieving explosion safety in the design of equipment, protective systems and components.

This document is applicable to any equipment, protective systems and components intended to be used in potentially explosive atmospheres, under atmospheric conditions. These atmospheres can arise from flammable/combustible substances processed, used or released by the equipment, protective systems and components or from materials in the vicinity of the equipment, protective systems and components and/or from the materials of construction of the equipment, protective systems and components.

This document is applicable to equipment, protective systems and components at all stages of its use.

This document is only applicable to equipment group II which is intended for use in other places than underground parts of mines and those parts of surface installations of such mines endangered by firedamp and/or combustible dust.

This document is not applicable to:

  1. medical devices intended for use in a medical environment;

  2. equipment, protective systems and components where the explosion hazard results exclusively from the presence of explosive substances or unstable chemical substances;

  3. equipment, protective systems and components where the explosion can occur by reaction of substances with other oxidizers than atmospheric oxygen or by other hazardous reactions or by other than atmospheric conditions;

  4. equipment intended for use in domestic and non-commercial environments where potentially explosive atmospheres may only rarely be created, solely as a result of the accidental leakage of fuel gas;

  5. personal protective equipment covered by Regulation (EU)Â  2016/425;

  6. seagoing vessels and mobile offshore units together with equipment on board such vessels or units;

  7. means of transport, i.e. vehicles and their trailers intended solely for transporting passengers by air or by road, rail or water networks, as well as means of transport insofar as such means are designed for transporting goods by air, by public road or rail networks or by water; vehicles intended for use in a potentially explosive atmosphere shall not be excluded;

  8. the design and construction of systems containing desired, controlled combustion processes, unless they can act as ignition sources in potentially explosive atmospheres.

Standard NumberBS EN 1127-1:2019
TitleExplosive atmospheres. Explosion prevention and protection. Basic concepts and methodology
Publication Date27 August 2019
Normative References(Required to achieve compliance to this standard)EN ISO 80079-36:2016, EN 15198:2007, EN 13237:2012, EN ISO 12100:2010
Informative References(Provided for Information)EN 60079-20-1, EN 15233, EN 50495, EN ISO 80079-37, EN IEC 60079-0, EN 60079-17, TR 60079-32-1, EN IEC 60079-15, EN 60079-18, IEC 80079-38, IEC 60050-426, EN ISO 16852, EN 14034-4, EN 16447, EN 13636, EN 10226 (series), EN 14373, TR 50427, EN 60079-28, EN 50050 (series), EN 62127-1, TR 50426, EN 60079-5, EN 15188, TS 60079-40, TR 15281, EN 14034-2, EN 1127-2, EN IEC 61340-4-4:2018, EN 60079-26, EN 14460, EN 62305 (series), EN 60079-14, EN 60079-31, EN 60079-25, EN 60079-30-2, EN 50303, EN 15967, EN 15794, EN 15089, EN 14491, EN 60079-7, EN 60079-1, EN 60079-11, IEC 80079-34, IEC 80079-20-2, EN ISO 13849-1, EN 14797, EN 14986, EN 60079-30-1, EN 60079-10-1, EN 16020, EN 14522, EN 1839, EN 14994, EN 60079-6, EN 14034-3, EN 14034-1, EN 60079-2, EN 60079-10-2
ReplacesBS EN 1127-1:2011
International RelationshipsEN 1127-1:2019
Amended ByCorrigendum, October 2019
DescriptorsSafety measures, Ionizing radiation, Hazards, Electric current, Fire risks, Risk assessment, Particulate materials, Fire safety, Design, Flame traps, Protected electrical equipment, Lightning, Flames, Marking, Ignition, Explosive atmospheres, Dust, Electromagnetic radiation, High frequencies, Instructions for use, Ignitability, Control equipment, Surfaces, Ventilation, Hazardous areas classification (for electrical equipment), Electric sparks, Electrostatics, Classification systems, Chemical hazards, Ultrasonics, Electrical safety, Gases, Explosions, Hand tools
Title in FrenchAtmosphères explosives. Prévention de l'explosion et protection contre l'explosion Notions fondamentales et méthodologie
Title in GermanExplosionsfähige Atmosphären. Explosionsschutz Grundlagen und Methodik
ISBN978 0 539 06785 9
File Size1.002 MB

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