Regional Basic Professional Training Course in Korea

Regional Basic Professional Training Course (BPTC) on Nuclear Safety
achievable;
The prevention of accidents that could affect site personnel, the public and the
environment; and
The limitation and mitigation of the consequences of accidents if they do occur.
Consequently, there is a need for:
Components, systems and structures with high reliability;
Technology that is proven or qualified by experience or testing or both, meeting
conservative regulations or criteria with appropriate safety margins;
Appropriate inherent and engineered safety features; and
Specific consideration in design to minimizing personnel exposures.
Additionally, components, structures and systems need to be classified on the basis of
their safety significance and to be designed, manufactured and installed to a level of
quality commensurate with that classification.
Since engineered systems may fail despite all careful precautions, it is a basic design
concept to provide backup features so that either a function is performed by another
system or another design feature mitigates the consequences associated with the failure of
the system. Consequently, design principles have been formulated to achieve the goal of
accident prevention and mitigation with high confidence. For example:
No single equipment failure or single maintenance action or any other single
human action should disable a safety function;
The possibility of failures due to a common cause should be minimized by
diversity of equipment;
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