Westinghouse Electric Sweden Ab

Mahdi Majed

Sture Helmersson

Dmitry V Paramonov

Gunilla Norbäck

Carl Adamsson

Rolf Eklund

Dmitry Paramonov

The invention concerns a method of estimating when dryout may occur in a nuclear light water reactor of the boiling water reactor kind. The method includes the use of a formula which expresses the local dryout property of the nuclear reactor. The formula includes at least a first and a second factor. The first factor is a first function that describes how the dryout property depends on the flow of the cooling medium through the nuclear fuel arrangement. The second factor is a second function that describes how the dryout property depends on the axial power profile of the nuclear fuel arrangement. The first and the second functions describe said flow dependence and said axial power profile dependence independently of each other. The invention also concerns a nuclear energy plant, a computer program product () and a method of operating a nuclear energy plant.

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Västerås, Sweden

Mahdi Majed