ML20127N334

Proposed TS 15.3.10 Re Control Rod & Power Distribution Limits

ML20127N334
Person / Time
Site:	Point Beach
Issue date:	11/24/1992
From:	WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20127N316	List: ML20127N312 ML20127N334
References
NUDOCS 9212010189
Download: ML20127N334 (1)

Text

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'15.3.10 CONTROL R00 AND POWER DISTRIBUTION LIMITS Anolicability Applies to the operation of the control rods and to core power distribution limits.

Ob.iective To insure (1) core subcriticality after a reactor trip, (2) a limit on potential reactivity insertions from a hypothetical rod cluster control assembly (RCCA) ejection, and (3) an cceeptable core power distribution during power operation.

Soecification A. Bank Insertion Limits

1. When the reactor is critical, except for physics tests and control rod exercises, the shutdown hanks shall be fully withdrawn.'

2. When the reactor is critical, the control banks shall be inserted no furtker than the limits shown by the lines on Figure 15.3.'10-1.

Txcepticas to the insertion limit are permitted for physics tests and control rod execcises.

3. The shutdown margin shall exceed the applicaole value .ss shown in Figure 15.3.10-2 under all stearly-state operating conditions from 350*F to full power. An exception to the stuck RCCA component of the shutdown margin requir ment is permitted for physics tests.

4. Except for physics tests a shutdown margin of at !aast 1% Ak/k shall be maintained when the reactor coolant temperature is less than 350"F.

i 5. Wen the ce+o4ee-h h the h:t itd;= :: diti:n 0.- d juringany approach to criticality, except for physics tests, the critical rod position shall not be lower than the insertion limit for zero power. That is, if the control rods were withdrawn in normal sequence with no other reactivity change, the reactor would not be c:itical until the control banks were aboYe the insertion limit.

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• Fully withdrawn is defined as a bank demand position equal to or greater than 225 steps. This definition is applicable to shutdown and control bank;.

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