ML18037A276

LER 80-011/04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated

ML18037A276
Person / Time
Site:	Nine Mile Point
Issue date:	07/22/1980
From:	Harrison P NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17053B797	List: ML17053B796 ML18037A276
References
LER-80-011-04L, LER-80-11-4L, NUDOCS 8007290600
Download: ML18037A276 (4)

Text

NRC FORM 366 U. S. NUCI.EAR REGULATORY COMMISSION

<f-77) -~

LICENSEE EVENT REPORT CONTROL BLOCK: QI (PLEASE PRINT OR TYPE ALI. REQUIRED INFORMATION)

I 6

~01 7 8 9 N Y N LICENSEE CODE.

H P 1 14 Qs0 15 0 0 0 0 0 LICENSE NUMBER 0 - 0 O'Qa 25 26

" 1 1 LICENSE TYPE 1 1Q4~Qs 30 57 CAT 58 CON'T

~01 QB S 0 0 0 2 2 0 Q7 69 0 6 2 3 8 0

74 QB

", 75

.'0 7 2

','EPORT DATE 2 8 0 80 QB 7 8 60 61 DOCKET NUMBER 68 EVENT DATE 4

'I EVENT DESCRIPTION AND PROBABL.E CONSEQUENCES ~10 During normal o'ration su ervisor review of recorder indications re-vealed that 'the condenser inlet/circulating water dischar e delta tern exceeded the 31.2 F Tech Spec limit for more than 8 hrs. in a.24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period on days of 6/20-23/80. Since the delta temp was a maximum of 32OF

~os during the entire Period, there was no significant environmental effect .

~07

~08 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~HF. Q>> A Q>2 ~AQ>3 1 N S T R U Q4 ~XQ>> ~Z Qs 7 8 9 10 ll 12 13 18 19 20 REVISION SEQUENTIAL OCCURRENCE REPORT EVENT YEAR REPORT No. CODE TYPE NO.

Qs LFR/RO "4 so sr ~80 Q 23, ~01 1 QP ~04 QL [J QO I

21 22 24 26 27 28 29 30 31 32 ACTION . FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDR'RIME COMP. 'OMPONENT SUPPLIER MANUFACTURER 42, H TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

33 QIB ~QIB 34

~Q20 35 LJQl 36 37 0 4 4 4 40

~N 41 Q23 QJQ24 43 Q26 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 0 Shift operations personnel evaluation. of te'm erature chart recorder at times in question did not consider the delta tern indication as bein in violation. However upon supervisory review of the recorder indications it was determined that the Tech Spec limit was being exceeded, and an immediate station load reduction was taken. In addition the chart 7 8 9 80 Q

'2 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION Q2 8 Qss ~09 9 Qss N A 44 45 Su'ervisor Review 80 7 8 9 10 17 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY Q LOCATION OF RELEASE Q

~16 ~Z Q33 ~ZQ34 N/A N A 80 7 8 9 10 'I1 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 4 ~<> 0 Qss 2 Qss N/A 80 7 8 9 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION Qnl

~0.0 0 Q4o N/A 7 8 9 11 12 80 LOSS OF OR DAMAGE To FACILITY TYPE DESCRIPTION Q43 9 Q42 N/A 7 8 9 10 80 ISSUED

~NQ44 P U 8 L I C I TY' DESCRIPTION N/A

~ NRC USE ONLY ss 8 9 19 68 69 ~ 80 o 0

fggP> snsssnan Paul Harrison PHONE: t3 ~

ATTACHMENT LER 80-11 Cause Descri tion and Corrective Actions (Continued) recorder scale is being expanded to increase accuracy of the recorder, and a technical specification change has been submitted to increase the allowable delta temp to 35 F.

ATTACHMENT LER 80-11 Cause Descri tion and Corrective Actions (Continued) recorder scale is being expanded to increase accuracy of the recorder, and a technical specification change has been submitted to increase the allowable delta temp to 35 F.