05000317/LER-1981-048-03, /03L-0:on 810620,saltwater Drain on Equipment Cooling Heat Exchanger 12 Became Loose & Started Leaking While Pumping Saltwater Side of Exchanger 11 W/Saltwater Header 11 Out of Svc.Caused by Faulty Nipple Installation

/03L-0:on 810620,saltwater Drain on Equipment Cooling Heat Exchanger 12 Became Loose & Started Leaking While Pumping Saltwater Side of Exchanger 11 W/Saltwater Header 11 Out of Svc.Caused by Faulty Nipple Installation

ML20009D664
Person / Time
Site:	Calvert Cliffs
Issue date:	07/14/1981
From:	Davis S, Rayburn C BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20009D661	List: 05000317/LER-1981-048, Forwards LER 81-048/03L-0 05000317/LER-1981-048-03, /03L-0:on 810620,saltwater Drain on Equipment Cooling Heat Exchanger 12 Became Loose & Started Leaking While Pumping Saltwater Side of Exchanger 11 W/Saltwater Header 11 Out of Svc.Caused by Faulty Nipple Installation
References
LER-81-048-03L, LER-81-48-3L, NUDOCS 8107240261
Download: ML20009D664 (2)

LER-1981-048, /03L-0:on 810620,saltwater Drain on Equipment Cooling Heat Exchanger 12 Became Loose & Started Leaking While Pumping Saltwater Side of Exchanger 11 W/Saltwater Header 11 Out of Svc.Caused by Faulty Nipple Installation

Event date:
Report date:
3171981048R03 - NRC Website

text

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7-77)-

LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l

l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

lo Iil l Ml Dl Cl Cl Nl 1l@l 0 l 0 l -l 010 l 010 l 0 l - l 0 l 0 l@l 4 l 1 l 1 l 1 l 1 l@l l

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7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 68 CON'T lolil g l L j@l 0l 5 l 0 l 0 l 0 l 3 ] 1 l 7 ]@l 0 l 6 l 2 l 0 l 8 l 11@l 0 l 711 ] 418 -l 11@

7 8

60 61 DOCKET NUM8ER 68 69 EVENT DATE 14 7S REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2 l

- At 0320 during nonnal operation with #11 saltwater header out of ser-l [O i a l I vice, while pumping the saltwater side of #11 component cooling heat ex-l O 4 l

changer (CCHX) to #12 CCHX, the saltwater drain on #12 CCHX became loose l

O s i and started leaking (T.S. 3.7.3.1).

1. 11 saltwater header was returned l

lO is i i to service and #12 saltwater header was placed out of service to repair l

lOi7; I the leak.

1. 12 saltwater header was returned to service at 1115.

l iOia i i Similar occurrences: None.

_j 80 7

8 9 E

CODE SUBC E COMPONENT CODE SUBCODE SU E

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9 10 11 12 13 18 -

19 20 SEQUENTIAL OCCUR RE NCE REPORT REVISION LE R /RO EVENT YEAR REPORT NO.

CODE TYPE NO.

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l0 l3 l W

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ml The drain line separated from #12 CCHX due to the pipe nipple not being i

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installed properly. The nipple was rethreaded and reinstalled properiv.

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,, l No further corrective action is deemed necessary.

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80 7

8 9 A

% POWER OTHER STATUS ISCO RY DISCOVERY DESCRIPTION [Lj@ l0l8l4l@l NA l

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1 5 ACTIVITY -CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE RELEASED @OF RELE ASEl.Z j@l NA l

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[Z_j i o PERSONNEL EXPOS ES NUVBER TYPE

DESCRIPTION

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7 PERSONNE L INJURIES NOVRER

DESCRIPTION

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i s 80 7

8 9.

11 12 LO OF OR DAMAG TO F ACILITY l

@ [Z_j@l NA 8107240261 810714 80 7

8 9 io Pu8uCiTY PDR ADOCK 05000317 Nnc usE ONLY g

PDR 45 [N_J l

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I l 1 1 1 1 1 1 1 1 I l l :i ISSUED @ DESCRIPTION 2 O 68 69 80 5 7

8 9 10 (301) 269-4850/4803 NAME OF PREPARER PHONE:

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LER NO.

81-48/3L DOCKET NO. 317 LICENSE NO.

DPR-53

- EVENT DATE 06-20-31

- REPORT DATE 07-14-81

~ ATTACHMENT EVENT DESCRIPTION-AND PROBABLE CONSEQUENCES (CONT'D)

At 0320 in order to prepare to clean the tube side of #11 component cooling heat exchaager, #11 saltwater header was placed out of service. However, while

- purnping saltwater from #11 component cooling heat exchanger to #12 component

' cooling heat exchanger, the drain line on #12 component cooling heat exchanger became loose and began to leak (T.S. 3.7.3.1). # 11 saltwater header was returned to service at 1115.