ML20136C362

Confirms 790622 Telcon Re Util Notification by Westinghouse That High Energy Line Break Inside Containment Could Result in Heatup of Steam Generator Level Transmitter Ref Legs.Util Evaluating Corrective Actions

ML20136C362
Person / Time
Site:	Farley
Issue date:	06/22/1979
From:	Hariston W ALABAMA POWER CO.
To:
References
FNP-79-0762, FNP-79-762, NUDOCS 7909190492
Download: ML20136C362 (1)

Text

NRC. *366 U.S. NUCLEAR REGULATERY COMMISSION

• '4 itCENSEE EVENT REPORT ,

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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8 61 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l Westinghouse notified Alabama Power Company that a high energy lino b ra nte inefan l 10 ; J l l Containment could result in heatup of the steam nenerator level traneitter referanea l LO_f 41 I legs. A resulting error in steam Renerator level indication in th e nnn-cnnnorvnr4va l ITITl l direction could occur that could affect reactor trip and auxiliary feedwater I 10 le i l initiation signals. Review of this notification resul ted in n dorarninneinn nn I l0l7l l 6/22/79 that this condition is potentially reportable under Tech. Snac. 6.4.1_R(hi. I 101811 The health and safety of the oubli c vere nn e a f fec ted. I 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCODE COMPONENT CODE SUSCODE SUBCODE 7

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33 34 35 36 37 40 41 42 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lilol l Increased reference leg water column temp. will result in a decrease of the water I I1 Iii l column density with a consequent apparent increase in the indicated S.C. un ear l ovn1 1 Ii l2I l (i.e. apparent level exceeding actual level) . This matter is under investigation.

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l 53 l3l l A supplemental IIE will be issued upon completion of the investigation. I I I 11 14 1 l '

7 8 9 80 STA  % POWE R OTHER STATUS IS O Y DISCOVERY DESCRIPTION ITITl lG l@ l 0 l 0 l 0 l@l NA l l D l@l Notification from NSSS vendor l A TiVITY CO TENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION oF RELEASE l1l6l [g_j h [yj @l NA I La I  ;

PERSONNEL EXPOS ES '

NUMBER TYPE DESCRIPTION li l 71 1010 l0 l@[Z_j@l NA l PERSONNE L INJURIES ,

NUMBER DESCRIPTION i e lo lo lo l@l NA l J

OSS OF OR D AGE TO FACILITY Q .

TYPE DESCRIPTION v i o Lz_l@l ni - - asuMe i PU BL t TY NRC USE ONLY 45 le t a # /- e 2 o [g_j l ISSUED @

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7 8 9 10 NAME OF PREPARER PHONE: