Standards

EMMUA 214 States : Page 2

1.2.1 National standards and Codes

  1. National standards within Europe

Most National standards within Europe relating to explosive atmospheres are derived from European EN standards which themselves are normally identical to the correspondingly numbered IEC standard. For example: BS EN 60079-17 is identical to EN 60079-17 and IEC 60079-17. However, sometimes national bodies (e.g. BSI in the UK) modify the Foreword and/or add National Annexes to their version of the iEC or regional standard. The 5th edition of BS EN 60079-14 contains such a modified Foreword and a National Annex. The 2nd edition of BS EN 60079-10-1 has a modified Foreword and will have a National Annex by the end of 2016

  1. US Codes The NFPA 70 Chapter 5 contains Articles 500 to 506 which deal with electrical equipment in hazardous (classified) locations. The articles cover:

500: Hazardous locations Classes I, Il and Ill,

Divisions 1 and 2

501: Class I locations - 502: Class II locations - 503: Class III locations

504: Intrinsically Safe systems - 505: Zones 0, 1 and 2 locations

506: Zones 20, 21 and 22 locations

1.2.2 Standards in electrical working in hazardous areas i) Standards relevant to gases Table 1 lists the relevant parts of IEC 60079, the current International standard for gases. International Electro Technical Commission (IEC)

Founded in 1906, the IEC (International Electrotechnical Commission) is the world’s leading organisation for the preparation and publication of International Standards for all electrical, electronic and related technologies. These are known collectively as “electro technology”.

IEC provides a platform to companies, industries and governments for meeting, discussing and developing the International Standards they require.

All IEC International Standards are fully consensus-based and represent the needs of key stakeholders of every nation participating in IEC work. Every member country, no matter how large or small, has one vote and a say in what goes into an IEC International Standard.

IEC standards dealing with electrical apparatus for hazardous areas are numbered in the series 60079 - xx, e.g. 60079 – 14 refers to electrical apparatus for explosive gas atmospheres, Part 14: Electrical Installations in hazardous areas (other than mines)

The main standards relating to this module are: