Nuclear power plants. Instrumentation and control systems important to safety. Design and qualification of isolation devices1 Scope This International Standard establishes requirements for the design, analysis and qualification of isolation devices used to ensure electrical independence of redundant safety system circuits, or between safety and lower class circuits, as specified in IEC 60709. This standard includes guidance on the determination of the maximum credible fault that is applied to the isolation devices. The maximum credible fault can be used as a basis for the

it does not cover respiratory protective devices designed for escape purposes

and also needed for the description of annotation schemes and serialization mechanisms for implementing conformant models as concrete data formats

ISO 20728 specifies a method for the determination of resistance to stress corrosion cracking (SCC) of magnesium alloys intended for use in structural applications (such as magnesium front end

In order to accommodate displacements rocker bearings can be combined with a sliding element in accordance with BS EN 1337-2

not included in the standard

slidable) and movable parts of fixed ladder systems

you can use the content formats like colour and fonts

If you work in the telecommunications industry

the regulation always takes precendence

less that due to moisture

extension (including climbing)

IEC 60598-2-22:1997