Overhead electrical lines exceeding AC 45 kV - General requirements. Common specificationsBS EN 50341 1, the main standard for overhead lines designed for AC 45 kV and above, has been written essentially as a stand alone document, except in so far as reference is made to other Standards. The NNA for any country (which is normative for that country and informative for other countries), amends, where necessary, parameters or practices quoted in the main body to values and methods used in the country. So, for overhead lines for use in Great

concerning thermal or sound insulation

BS EN ISO 9514) while others remain in the BS 3900 series

CE marking and labelling

distinguishing between self-weight and imposed loads

Evacuation using lifts

including the auxiliaries

or museum pieces used to demonstrate optical principles

Liquid retaining and containing structures are cement structures like silos

and Endosulfan (α-

Table 2 – Competence requirements by country/territory

A uniform format for the compilation of calls for expressions of interest and tender and contract documents provides the platform for the standardization of the component documents and improved communications between those engaged in the procurement process

reference is made to EN 10204