Light and lighting. Basic terms and criteria for specifying lighting requirementsWhat is BS EN 12665? BS EN 12665 is a European standard which defines basic terms and definitions for use in all lighting applications. It also sets out a framework for the specification of lighting requirements, giving details of aspects which have to be considered when setting those requirements. The significant change between EN 12665: 2002 and EN 12665: 2011 is within the scope of the document. EN 12665: 2002 defined basic terms for use in

inhalation

BS EN 12259-1:1999 specifies requirements for construction and performance of sprinklers which are operated by a change of state of an element or bursting of a glass bulb under the influence of heat

Water management is an issue for everyone (rainy London is one of the most water-stressed cities in the world)

the particular requirements included can be used to demonstrate compliance with one or more but not all of the requirements of BS EN 868 Part 1

EN 50121-3-1

This standard establishes a common framework for describing the life cycle of systems created by humans

It is different for hot-rolled metal products and cold-rolled metal products

BS EN 60079-1 first looks at the levels of protection and ignition compliance requirements of electrical equipment – for example levels ia

A similar International Standard has been published for X-ray

Electrical ground power units

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BS EN 80000 is an International Standard series