BS EN 1127-1:2011 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:

a) appropriate design (without using safeguarding);

b) safeguarding;

c) information for use;

d) 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 European Standard. They are dealt with in EN ISO 12100:2010, Clause 6.

The preventive and protective measures described in this European Standard 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.

BS EN 1127-1:2011 specifies general design and construction methods to help designers and manufacturers in achieving explosion safety in the design of equipment, protective systems and components.

BS EN 1127-1:2011 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 materials 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.

BS EN 1127-1:2011 is applicable to equipment, protective systems and components at all stages of its use.

BS EN 1127-1:2011 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 flammable dust.

BS EN 1127-1:2011 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 Directive 89/686/EEC;

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.



Cross References:
EN 1839
EN 13237
EN 13463-1
EN 13463-6
EN 13821
EN 14034-1
EN 14034-2
EN 14034-3
EN 14034-4
EN 14373
EN 14460
EN 14491
EN 14522
EN 14756
EN 14797
EN 15089
EN 15198
CEN/TR 15281
EN 15794
EN 15967
EN 50281-2-1
CLC/TR 50404
EN 50495
EN 60079-1
IEC 60079-1:2007
EN 60079-10-1
IEC 60079-10-1:2008
EN 60079-10-2
IEC 60079-10-2:2009
EN 61241-14
IEC 61241-14:2004
EN ISO 12100:2010
ISO 12100:2010
EN ISO 13849-1
ISO 13849-1:2006
EN ISO 16852
EN ISO 16852/Technical Corrigendum 1:2008
EN ISO 16852/Technical Corrigendum 2:2009
89/686/EEC
1999/92/EC
EN 1127-2
EN 1710
EN 13463-2
EN 13463-3
EN 13463-5
EN 13463-8
EN 13980
EN 14591-1
EN 14591-2
EN 14591-4
EN 14983
EN 14986
EN 15188
EN 15233
EN 50017
EN 50050
EN 50053-1
EN 50053-2
EN 50053-3
EN 50303
EN 60079-0
IEC 60079-0:2007
IEC 60079-0:2007/Corrigendum 1:2010
EN 60079-2
prEN 60079-5
EN 60079-6
IEC 60079-6:2007
EN 60079-7
IEC 60079-7:2006
EN 60079-10
IEC 60079-10:2002
EN 60079-11
IEC 60079-11:2006
IEC 60079-11:2006/Corrigendum 1:2006
EN 60079-14
IEC 60079-14:2002
EN 60079-15
IEC 60079-15:2005
EN 60079-18
IEC 60079-18:2004
prEN 60079-20
EN 60079-20-1
EN 60079-25
IEC 60079-25:2003
EN 60079-26
IEC 60079-26:2006
EN 60079-28
IEC 60079-28:2006
EN 60079-30-1
EN 60079-30-2
IEC 60079-30-2:2007
EN 60079-31
EN 61241-0
IEC 61241-0:2004
IEC 61241-0:2004/Corrigendum 1:2005
EN 61241-1
IEC 61241-1:2004
EN 61241-2-2
IEC 61241-2-2:1993
IEC 61241-2-2:1993/Corrigendum 1:1994
EN 61241-4
IEC 61241-4:2001
EN 61241-11
IEC 61241-11:2005
IEC 61241-11:2005/Corrigendum 1:2006
EN 61241-17
IEC 61241-17:2005
EN 61241-18
IEC 61241-18:2004
EN 61340-4-4:2005
IEC 61340-4-4:2005
EN 62305-2
IEC 60305-2:2010
EN 62305-3
IEC 60305-3:2010
CLC/TR 50426
CLC/TR 50427
IEC 60079-4
IEC 60050-426
94/9/EC
2006/42/EC


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