ML20236K720
| ML20236K720 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 07/24/1987 |
| From: | BALTIMORE GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20236K704 | List: |
| References | |
| NUDOCS 8708070231 | |
| Download: ML20236K720 (1) | |
Text
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.o 6
REACTIVITY CONTROL SYSTEM _S I
LIMITING CONDITION FOR OPERATION e.
With one or more CEAs misaligned from any other CEAs in its group by more than 7.5 inches but less than 15 inches, operation in MODES I and 2 may continue, provided that within one hour the misaligned CEA(s) is either:
1.
Restored to OPERABLE status within its above specified alignment requirements, or 2.
Declared inoperable.
After declaring the CEA inoperable, operation in h10 DES I and 2 may continue for up to 7 days per occurrence with a total accumulated time of s 14 days per calendar year provided all of the following conditions are met:
a.
The TIIERh1AL POWER level shall be reduced to s 70% of the maxir'um allowable TIIERh1AL POWER level for the existing Reactor Coolant Pump combination within one hour; if negative reactivity insertion is required to reducing TIIERh1AL POWER, boration shall be used.
b.
Within one hour after reducing the TIIERh1AL POWER as required by a) above, the remainder of the CEAs in the group with the inoperable CEA shall be aligned to within 7.5 inches of the ' inoperable CEA while maintaining the allowable CEA sequence and insertion limits shown on Figure 3.1 -2; the TIIERh1AL POWER level shall be restricted pursuant to Specification 3.1.3.6 during subsequent operation, f.
With one CEA misaligned from any other CEA in its group by 15 inches or more, operation in h10 DES I and 2 may continue, provided that the misaligned CEA is positioned within 7.5 inches of the other CEAs in its group in accordance with the time allowance shown in Figure 3.1 - 3.
The pre-misaligned F[ value used to determine the allowable time to realign the CEA from Figure 3.1 -3 shall be the latest measurement taken within 5
days prior to the CEA misalignment.
If no measurements were taken within 5 days prior to the misalignment, a pre-misaligned F[of 1.65 shall be assumed.
g.
With one CEA misaligned from any other CEA in its group by 15 inches or more at the conclusion of the time allowance permitted in Figure 3.1-3, immediately start to implement the following actions:
i-L 1.
If the TIIERh1AL POWER level prior to the misalignment was greater l
l than 50% of RATED TIIERh1AL POWER, TIIERh1AL POWER shall be
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reduced to less than the greater of:
j
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CALVERT CLIFFS - UNIT 2 3/4 1-18 Amendment No.
i l
B708070231 870724 PDR ADOCK 05000318 p
PDR 1