Regional Basic Professional Training Course in Korea

each a final stable and controlled state of the core.
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16. In‐Plant Accident Management
And a set of guidelines containing instructions for actions in the framework of severe
accident management is called severe accident management guideline (SAMG).
This severe accident management, like the majority of nuclear plant safety issues which
have evolved over the last 20 years, is an extension to a system of safety improvements in
response to the 1979 TMI accidents. It needs to be emphasized that the main philosophy
within the US industry approach is to exploit existing plant capability in severe accident
mitigation and preclude the need for plant hardware change. It is “do one’s best with what
one have” concept.
In contrast, the European industry reinforced the defence‐in‐depth concept with a more
hardware oriented approach; filtered containment vents were designed and installed,
catalytic hydrogen recombiners were installed, etc. Serious effort was initiated in
Sweden, for example, in plant modification and implementation of SAM procedures by
the end of 80’s. Similar efforts were also underway in European countries. But severe
accident and its mitigation became part of the design consideration in the construction of
new plants in many countries. For operating plants, Korea is following the philosophy of
US industry SAMG, but for new plants some mitigative features are required in design.
The guideline alone is not all that is needed for SAM development and implementation.
We need other elements also and a set of these elements constitute the severe accident
management program (SAMP). These fundamental elements, and a brief definition of
each, are as follows ;
Guideline
- the basic element of developing and providing guidelines/strategies for use by the