ML19208D475

LER 79-052/04L-0:on 790830,computer Calculations for Condenser Inlet Water & Plant Cooling Water Discharge Temp Differential Temp Were Found Out of Calibr.Cause Not Stated. Instruments Recalibr within Tech Specs Limits

ML19208D475
Person / Time
Site:	FitzPatrick
Issue date:	09/25/1979
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19208D470	List: ML19208D469 ML19208D475
References
LER-79-052-04L, LER-79-52-4L, NUDOCS 7909280467
Download: ML19208D475 (2)

Text

.

LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l 6

lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

'c 7

1 8 9

'l N l Y lJlAlFl1 LICENSEE CODE 14 l@l :S 0 l 0 l - l 0 LICENSE l 0 l UNuvtlER l0 -

l0l0l0l@l4 l1l1l1l1 @l$1 CATl 58 @

45 26 LICENSE TYPE JO CON'T 7

o 1 6

3[g] l L l@ 0 ] 5 l 0 l 0 l 0 l 3 l 3 [ 3 l@l 0 [ 8 l 3 l0 7 l9 l@ 0 l9 l2 5 l7 l9 l bJ 61 DOCKET NUMdER 68 63 EVENT DATE 75 REPORT D ATE , 80

~

EVENT DESCRIPTION AND PROBABLE CCNSEQUENCES h 3 lo l2l l Picase See Attachment UU L Il l I P "A NI I O 3 l 1 o .

1 I lo isi I I o 6 I I

O 7 l l

0 8 l  !

SYSTEM CAUSE CAUSE COYP.

CODE VALVE CCDE SUBCODE COYPONENT CODE SUBCODE SU8 CODE 1

o 9

& 9 lH I Fj@ [ E l@ l G l@ lI lN lS lT l R[ UlQ [ X [g [ Z l @

10 11 12 13 18 IJ 2V

_ S E QU E N TI A L OCCURRENCE REPORT REVISION tg q AO EVENT YE AR REPORT NO. CODE TYPE NC.

O ,7g.o," 17 19 I 21 22 l-l 23 I 015l 2l 24 l-l l0l4l lL ll pl 26 27 28 23 30 31 32 TAKE A T ON 0 4 PLANT U T HOURS SB IT D FOR UB. MAN FACTLRER l35 Z [ g l30Zl@ l0 l0 0l {_j g SUPPN E I33E [gl34Zl@ 31 el lN l l@ lG 0 8 l 047l@

40 42 43 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i U [ Please See Attachment l 11 12] I I i 2 l l li l,I I l

Ii la 1 I l 7 8 9 80

• , PO.NE R STA 5 OTHE R STATUS iSCO RY DISCOVERY DESCRIPTION

5 lGl@ l0l0l0lg NA l l B lgl Surveillance Test

[

' * * ' '# " " '6 ACTiviTv COdrENT 8 RE LE ASED OF RE LE ASE At'OUNT OF ACTivlTY LOCATION OF RELEASE 1

1 6 a 9 l Zl @ l Z lgl 10 Ni, l l NA l

11 44 45 P( R $CY.E L E x POSUR E $ 80 NUYRER TYPE DE SCniP TION i 7 10 l0 lo l@l2 l@l l PERSONNEL INJU IFS NUY3ER CESCRIPTf 0N lt la8 l9l0 l0 0l@l 7 11 12 NA l

80 LOSS 05 On OAVAGE TO F ACILf TY TYPE DESCRIPTION i ' ' l ,

li l 9l ggl NA ILJV ,

7 8 9 10 PUB L ICI TY 80 ISSUED D E SCRIP TION . c' NRC USE CNLY ~

NA ~

12 l o l lN l@l

1. a 3 !a 7909287 0 ' '(r .'/ l llllll llllll.

68 69 80 &

N A*.?E OF PRE P ARER V. Childs 315-342-3840 o PHONE:

• POWER ALIT 110RITY OF 111E STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET NO. 50-333 AT1sCIIMENT TO LER 79-052/04L-0 Page 1 of 1 While shutdown in the cold condition, during the conduct of F-IMP-36.5 titled

" Circulating Water System Water Temperature RTD's," the computer calculations for condenser inlet water and plant cooling water discharge temperature differential temperature were found out of calibration.

Technical Specifications Appendix B, Paragraph 2.1.1 requires calculation of the differential temperature with an accuracy of 0.5 F. While performing F-IMP-36.5 these calculations were found to be in error at several points between 32 and 104.4 F.

In each case the indicated differential temperature was larger than the actual differ-ential temperature, the largest errcr being 1.83 F. In view of the small error and the instrument drift in the conservative direction, the event did not represent any significant hazard to the public ' health and safety.

The instruments were recalibrated to within the limits of Technical Specifica-tions and verified satisfactory utilizing F-IMP-36.5.

/

s J

,] " s N w j c ~ __ ___ .. . . . . . _ , _ _ , , _ _ . _ _ _ _ ___ ~ ...