ML19208A698

LER 79-043/01X-0:on 790911 Discovered Tech Specs Figure 3.2-4 Was Nonconservative.Cuased by Failure to Clarify Cycle 4 Operation.Correct & More Conservative Curve Shall Be Used

ML19208A698
Person / Time
Site:	Calvert Cliffs
Issue date:	09/12/1979
From:	Lippold W BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-043-01X, LER-79-43-1X, NUDOCS 7909170302
Download: ML19208A698 (1)

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60 61  ; C C A E T ". /.' B E R 68 63 E k E ". T O A T E 74 75 AEP RTCATE 'O EVENT DESCRIPTloN AND P AO9 ABLE Co'.SECUENCES h a 2 pt about ic30 9/11/79, Corbustion Encineerinc (CE) inferred the Plant *;uclear 1 oj3 [Encineer that Technical Soecification Ficure 3.2-4 was non-conservative in that I o 4 Ithe curve's coordinates at 80" rated themal po .er should be t .30 instead of 1 I

o s d.35ASIunits. Should the reactor have been operatinc cutside of the correct I o e  ! curve at the time of occurrence of the linitino mostulated accident /A00, that 1 o 7 ' event would not have been orevicusly analyzed for. _ . I ois I _

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44 47 C AUSE DESCRIPTION AND CC ARECTIVE ACTICNS h i o F.n a-b i cu i ty in the renderinc of the curve on Ficure 3.2 4, initiated bv CE in 1 i i ;sunnort of Cycle Four Creration, was not clarified durinn the chain of revimas

, , petween CE, SSSE, and "RC and resulted in the issue of a rcn-conservative Technical I i  ; lEcecification by ':RC. Plant Cceratiens staff will use the correct and core I iit penservative curve in lieu of Ficure 3.2-4, until correct curve is issued by WC. I 7 3 3 30 TA S . D ; /. E A GT"C A S T A TLlS 5 0 AY D'500VER v OESC A.FTION i 5 l E j@ l0 l 911 l@l  :.'A l lDl@l *'otification by CE I

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