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Risk Importance Measures in the Design and Operation of Nuclear Power Plants

By
Ivan Vrbanic
Ivan Vrbanic
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Pranab Samanta
Pranab Samanta
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Ivica Basic
Ivica Basic
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ISBN:
9780791861394
No. of Pages:
152
Publisher:
ASME Press
Publication date:
2017

In order to be able to “measure” the importance of a particular feature or component which has certain safety function in any technical system (NPP included), an appropriate technical definition needs first to be established for a quantitative measure of the system’s “safety”. One of the, arguably, best ways is to present it through its inversion, the “risk”, which is, in engineer’s terms, quantitatively defined by the famous “risk curve” representing the probability (or frequency) of exceedance as a function of magnitude of consequences, Figure 2-1. This presentation corresponds, for example, to the complementary cumulative distribution function used to depict the risk in NUREG-1150.

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