Qualification of electrical installation contractorsQualification of electrical installation contractors CENELEC, the European Electrotechnical Standards Organization, has published a technical specification regarding the qualification of electrical installation contractors. DD CLC TS 50349: 2004 provides a system to identify the capability of electrical contractors undertaking electrical installations such as security and CCTV systems, underground cable networks for power distribution, overhead lines,

Barrier machines as defined in 3

all the requirements under PD CEN/TR 17223 apply to the organizations’ activities and the applicable regulatory requirements need to be applied

This international standard on sustainability in building construction identifies and establishes general principles for sustainability in building construction

Why should you use BS EN 16452 - Railway braking blocks

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It also specifies guidelines for design verification procedures and for the validation of performance by intended users

s  It does not cover systems in which warning of occupants is given by a speech message (whether pre-recorded or live) or systems in which there is a facility for two-way speech communication

Behaviour of spacer-seated gaskets

and has specifically avoided standardisation of components

It doesn’t apply to permanently installed cranes on marine and other water-borne vessels

BS 9266 converts the Draft for Development DD 266 into a full British Standard and incorporates the following principal changes:

The objective of environmental technology verification (ETV) is to provide credible