05000368/LER-1980-016-01, /01T-0:on 800318,inconsistency Identified Between Tech Specs & FSAR Safety Analysis.Caused by Failure of Initial Tech Specs to Determine Safety Analysis Limits. Reactivity Balance Calculation Procedure Revised

/01T-0:on 800318,inconsistency Identified Between Tech Specs & FSAR Safety Analysis.Caused by Failure of Initial Tech Specs to Determine Safety Analysis Limits. Reactivity Balance Calculation Procedure Revised

ML19309C436
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/01/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19309C418	List: 05000368/LER-1980-016, Forwards LER 80-016/01T-0 05000368/LER-1980-016-01, /01T-0:on 800318,inconsistency Identified Between Tech Specs & FSAR Safety Analysis.Caused by Failure of Initial Tech Specs to Determine Safety Analysis Limits. Reactivity Balance Calculation Procedure Revised
References
LER-80-016-01T, LER-80-16-1T, NUDOCS 8004080596
Download: ML19309C436 (2)

LER-1980-016, /01T-0:on 800318,inconsistency Identified Between Tech Specs & FSAR Safety Analysis.Caused by Failure of Initial Tech Specs to Determine Safety Analysis Limits. Reactivity Balance Calculation Procedure Revised

Event date:
Report date:
3681980016R01 - NRC Website

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O hmCFORMh4 U. S. NUCLE A A RE GUL ATORY COMMisseOes (7 77)

LICENSEE EVENT REPORT EXHIBIT A CONTROLSLOCC i l l l l l.g l

IPLE ASE PRINT OR TYPE ALL REQU1 RED INFORMATIONI i

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E VENT D.TE 34 75 H,,OR,0.Tt 80 EVENT DESCRIPTtON AND PROBABLE CONSEQUENCES O'o f7Tri l The NSSS Vendor, CE, notified AP&L that an inconsistency between the i

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1 Tech Specs and the FE AR safety analysis had been identified.

I o. i T.S.3.1.1.2 required a shutdown margin of 1% A /K during Mode 5 operation K

inis,t& FSAR 15.1.4.2.2.3 assumed 2% AK/K shutdown margin for the boron dlutiorg o. Ievent.

A review of past shutdown margin calculations in Mode 5 verified i I that a greater than 2% AK/K margin had been maintained.

No similar o,

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Reportable per T.S.6.9.1.8.h.

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C AUSE DESCR.PTION AND COA AEC flVE ACTIONS h m i Initial review & preparation of the AND-2 Tech Specs failed to determine i i,i,i i that the safety analysis required 2% AK/K versus the standard 1%AK/K.

i g i The Reactivity Balance Calculation procedure was revised.

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