ML19345B449

LER 80-086/04L-0:on 801024,condenser Delta T Exceeded Tech Spec Limit.Caused by Increasing Sea Water Temp & Lowering Tide Level

ML19345B449
Person / Time
Site:	Pilgrim
Issue date:	11/24/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345B447	List: ML19345B446 ML19345B449
References
LER-80-086-04L, LER-80-86-4L, NUDOCS 8012010347
Download: ML19345B449 (1)

Text

NRC FCCM 334 U.S. NUCLEAR REGULATORY COMMISSION

. {7 77) -

g LICENSEE EVENT REPORT O CO~1aO' 'OCx: i iiiip i <Ea. R.NT oR Tve. a<< RE s.REo .N oR a10~>

o i lMlAlPlPlSl1l@13 0l 0l -l 0l 0l 0l 0l 0l -l 0l 0l@LICENSE 14 LICENSE NUMBER 25 26 4 l 1l TYPE1l JG 1l 1l@l l l@

S F GA f 58 F S 9 LICENSEE CODE CON'T E "' y l Ll@l 0l 5l 0l -j 0l 2l 9l 3 @l1

$ R 68 69 l 0l EVENT 2 l 4l DATE 8l 0l@l 1l 1lREPORT 74 75 2l 4lDATE8 l Osol@

1 8' 60 61 DOCKET NUMBER EVENT DESCRIPT.ON AND PROB ABLE CONSEQUENCES h O 2 l On October 24, 1980 at approximately 1700 hrs. the condenser delta T exceeded the Tecil-g l nical Specification 320F limit. The condencer delta T, the temperature difference l g l between the inlet and discharge canal water temperature as recorded on computer point l I O l s i l C050 reached 32.030F. The displayed computer temperature is an average calculated l g l over a duration of one hour. Reactor power was immediately reduced approximately 7 l

[TTTl I percent for 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> to maintain condenser delta T below 320 F. l I

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• E ODE S SC E COMPONENT CODE SUSCODE SU O 9 'l Hl Cl@ W@ l Z l@ l Z lZ l Z lZ l Z l Z l@ y@ J @ 13 18 19 20 7 8 9 10 11 12 SEQUENTIAL OCCURRENCE REPORT REVISION REPORT NO. CODE TYPE NO.

LE RiRO

@ ,as u g . EVENT 18101 YEAR l-l 1018161 Ld 10141 L tJ I-I LO J 24 26 27 28 29 30 31 32 L21 22 23

'rS' EON"AC NT "E ^S 8 I1 FOR 8. SUP Li MANUF CTURER O M HOURS @

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35 W@

36 l0l0l0l3l 31 40 W@ lNl@ lZl@ lZl919l9l@

41 42 43 44 47 CAUSE DESCNIPTION AND CORRECTIVE ACTIONS h l i l O l l An increasing sea water temperature and lowerint tide level resulted in this minor I No adverse environmental effects were expected or exnerienced as a I m l- deviation.

I D T'51 I result of this event.

I i i t 31 I I

mi 8 9 7

80

% POWER OTHER STATUS IS O Y DISCOVERY DESCRfd flON SYA y [Ej@ l 1 l 0 l 0 l@l N.A. l W @l Operational Ever.t l ACTIVITY - CO TENT RELEASED OF RELEASE s AMOUNT OF ACTivtTY LOCATION OF RELEASE

! [,,1,,,[6.J L3] @ L.Z 181 .

" ^- 1 I "^- I PERSONNEL ExPOdAES i . NUMBER TYPE DESCRIPTION N.A.

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. [,1,,17,,j lo l0 l 0lhL,Z,jhl '

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' ' ' - PERSONNEL

iN;u' dies NUMBER' OESCRIPTION N .t.

8108 910 10l@l'12 7 11 .

l 80.

LOSS OF CR DAMAGE TO FACILITY '.

TYPE DESCRIPTION I 9 { gl N.A. l 8 9 to 80 7 ' '

PUBLICITY NRC USE ONLY f ""'"'"

i 2 0 '@@l 10 80120103 $ N.A. l 'lllllllllllllf 68 69 80 5 i 7 8 9 .

617-746-7900 o

_M. Thomas McLoughlin _

_