ML18037A172

LER 79-008/03L-0 on 790510:during Refueling Outage, Containment Spray Heat Exchangers 112 & 121 Failed Leak Rate Test.Caused by Tube Leaks.Tubes Plugged

ML18037A172
Person / Time
Site:	Nine Mile Point
Issue date:	05/31/1979
From:	Duda E NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18037A171	List: ML18037A170 ML18037A172 ML18037A173
References
LER-79-008-03L, LER-79-8-3L, NUDOCS 7906110181
Download: ML18037A172 (2)

Text

NRC FORM 3GG . NUCLEAR REGULATORY COMMISSION I7;77)

LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCK:

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~01 7 8 9 N Y' II LICENSEE CODE P

14 -15 LICENSE Nuh1BER 25 Qs 4 26 1 1 1 LICENSE TYPE 1

30 57 CAT 58 CON'T

~01 sooscs M~Ps 0 5 o 0 0 3 3 Qs 0 5 3 1~7 Qs 68 Q'0 69 EVENT DATE 74 75 REPORT DATE 80 7 8 61 DOCKET NuhIBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO Durin refuelin outa e Containment S r failed a 'Ieak rate test. This has minimal safet im lications since the unit is off-line for refuelin ~

~OS

~OG

~OB 80 7 8 SYSTEM CAUSE CAUSE Coh1P. VALVE CODE CODE SUBCODE CO51PONENT CODE SUBCODE SUBCODE

~SB Q>> E Q17 ~XQ>> H T E X 0 H Q4 ~Cps ~ZC>>,I 7 8 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE NO.

Q17 LFA RO sssos7 ~79 21 22 Q23

~QQ 24 5

26 Q~

27

~03 28 29 QL 30 Q31 QO 32 ACTION . FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT 41IETHOD ~ouRS +22 suBMITTED FORM suB. SUPPLIER h1ANUFACTURER LJHQs~ZQo ~ZQo ~ZP71 0 0 0 0 N Poo ~NQ4 ~LQs II 3 1 5 Qss 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 0 Containment Spray Heat Exchan ers 1 1 2 and 1 21 fai led their 1 eak rate test due to tube leaks. These tubes were lu ed and each heat exchan er passed a subsequent leak rate test.

3 4

7 8 9 80 FACILITY STATUS 44 POWER OTHER STATUS Q METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

[iis] ~HQos ~00 7 8 9 10 0

12 Qss 13 NA 44

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45 46 Leak Rate Test 80 ACTIVITY CONTENT RELEASEO OF RELEASE Ah'IOUNT OF ACTIVITY NA Q NA LOCATION OF RELEASE Q G ~Z Q33 ~ZQ34 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION QB

~l7'

~00 0 Qso Z Qos NA 80 7 9 11 12 13 PERSONNEI. INJURIES Nuh18EA OESCAIPTIONQ1 7 8

~00 9

0 Qo 11 12 NA 80 LOSS OF OA DAMAGE TO FACILITY v 90611 0 l g',

TYPE DESCRIPTION Q43 0 Z Q42 NA )

7 8 9 10 80 PUBLICITY NRC USE'ONLY ISSUED DESCRIPTION NA Q cs LNJQ44 8 9 10 68 69 80 0

NAME OF PREPARER PHONE31 5- 0

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