Regional Basic Professional Training Course in Korea

Regional Basic Professional Training Course (BPTC) on Nuclear Safety
information. For example, the limits on process variables of the core, heat transport
systems, and energy conversion systems should be stated in terms of instrument readings
available in the control room. In modern practice, safety parameter display systems are
provided in many plants to help the operators perceive and understand the plant’s safety
status.
10.2.1. Introduction
10.2. SAFETY SYSTEM SETTINGS
This chapter considers the basic preliminary concepts for defining the design of reactor
safety system. Reactor safety systems are designed to protect the plant in case of
predetermined accident scenarios. These scenarios are grouped into categories according
to an increasing probability of occurrence:.
Category 1 corresponding to the area of normal operation of the plant;
Category 2 corresponds to incidents whose occurrence frequency is estimated to be
between 1 and 10‐2 times per year, per reactor;
Category 3, between 10 ‐2 and 10 ‐4 times per year, per reactor;
Category 4, between 10 ‐4 and 10 ‐6 times per year, per reactor.
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