Main primary circuit (CPP) and piping
Maintenance of nuclear power plants (NSSS components)
Quizzed article REF: BN3296 V1
Main primary circuit (CPP) and piping
Maintenance of nuclear power plants (NSSS components)

Author : Jean-Pierre HUTIN

Publication date: November 10, 2017, Review date: April 26, 2021 | Lire en français

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8. Main primary circuit (CPP) and piping

After a review of the major components, this paragraph deals with the provisions that apply to the entire primary circuit, the special case of piping and some common problems.

8.1 Main primary circuit

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8.1.1 Regulatory definition

Legally, the main primary circuit is the set of components that support the primary pressure and cannot be safely isolated from the core (i.e. by two isolating devices). This circuit, which constitutes a single "device", therefore comprises :

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