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Sections 4.5.10, Electrical power systems and 4.5.11, Instrumentation and control

Electrical power systems

In accordance with sections 7.10 and 8.9 of REGDOC‑2.5.2, Design of Reactor Facilities: Nuclear Power Plants [9], the application should specify the required functions and performance characteristics of each electrical power system that provides normal, standby, emergency and alternate power supplies to ensure:

·       sufficient capacity to support the safety functions of the connected loads in operational states, DBAs and DECs

·       availability and reliability is commensurate with the safety significance of the connected loads

Instrumentation and control

The application should describe the instrumentation and control (I&C) systems used to support the safety case of the facility. The applicant should include provision of instrumentation to monitor and control reactor facility variables and systems over the respective ranges for operational states, DBAs and DECs, in order to ensure reactor facility safety and to make sure that adequate information can be obtained on reactor facility status.

For more information, see the following sections of REGDOC‑2.5.2, Design of Reactor Facilities: Nuclear Power Plants [9]:

·       section 7.9 for general requirements and guidance

·       section 7.6 for requirements and guidance related to reliability and sharing

·       section 7.21 for requirements and guidance on human factors

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