Explosive atmospheres - Equipment. General requirementsWhat is BS EN 60079 0: 2009? BS EN 60079 0 sets out the general electrical safety requirements for the construction, testing and marking of electrical equipment and components that are used in explosive atmospheres. Explosive or flammable atmospheres can be defined as temperatures of 20 C to +60 C; pressure of 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and air with normal oxygen content, typically 21 % v v. This standard also covers classification systems

installation planning

provided that they are inert to the test media and they are not excessively porous

BS 8002 also gives further details on how retaining structures should be designed according to limit state principles and provides information missing from Eurocode 7 but of importance to UK practice

BS EN 13781:2012 provides guidance and the most up-to-date recommendations to achieve the maximum performance of which a helmet is capable

BS EN IEC 60793-2-50 specifies three types of requirements apply to these fibres:

or the environment

known as the Zeleny sedimentation test

7 Biological requirements

Carriers subcontracting transport operations

This Directive The essential requirements as defined in article 9 and Annex II of the Directive

Makes minor corrections and updates references

• Requirements for display visibility