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Regional Basic Professional Training Course in Korea

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❙ 659 ❙<br />

10-A. Limit<strong>in</strong>g Conditions for Operation<br />

3.1.5.1 The follow<strong>in</strong>g limits shall not be exceeded for the listed reactor coolant<br />

conditions.<br />

Contam<strong>in</strong>ant Specification Reactor Coolant Conditions<br />

Oxygen as O2 0.10 ppm max above 250℉<br />

Chloride as Cl 0.15 ppm max above cold shutdown conditions<br />

Fluoride as Fl 0.15 ppm max above cold shutdown conditions<br />

3.1.5.2 Dur<strong>in</strong>g operation above 250℉, if any of the specifications <strong>in</strong> 3.1.5.1 is exceeded;<br />

corrective action shall be <strong>in</strong>itiated with 8 hours. If the concentration limit is not restored<br />

with<strong>in</strong> 24 hours after <strong>in</strong>itiation of corrective action, the reactor shall be placed <strong>in</strong> a cold<br />

shutdown condition us<strong>in</strong>g normal procedures.<br />

3.1.5.3 Dur<strong>in</strong>g operation between 250℉ and cold shutdown conditions, if the fluoride<br />

specification <strong>in</strong> 3.1.5.1 is exceeded, corrective action shall be <strong>in</strong>itiated with<strong>in</strong> 8 hours to<br />

restore the normal operat<strong>in</strong>g limits. If the specification is not restored with<strong>in</strong> 24 hours<br />

after <strong>in</strong>itiation of corrective action, the reactor shall be placed <strong>in</strong> a cold shutdown<br />

condition us<strong>in</strong>g normal procedures.<br />

10.4.5.2. Standard Operational Technical Specifications<br />

The <strong>in</strong>itial operational technical specifications followed the technical specifications<br />

described <strong>in</strong> the US 10CFR 50.36. However, <strong>in</strong>consistencies arise <strong>in</strong> the contents of the<br />

operational technical specifications due to the <strong>in</strong>crease of operat<strong>in</strong>g NPPs and <strong>in</strong>troduce<br />

the follow<strong>in</strong>g problems.<br />

Expression of op<strong>in</strong>ions on whether the contents <strong>in</strong> the technical specification are<br />

appropriate;<br />

Long term compromise between the <strong>in</strong>dustry and the regulatory body;<br />

Difference <strong>in</strong> op<strong>in</strong>ions between the NPP operator and <strong>in</strong>spectors regard<strong>in</strong>g the<br />

<strong>in</strong>terpretation of requirements;<br />

Increase <strong>in</strong> demand of technical specification changes.<br />

In the process of understand<strong>in</strong>g these problems and <strong>in</strong>creas<strong>in</strong>g efforts to systematize the

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