PNO-III-87-103, on 870727,licensee Reduced Power to Approx 2% to Repair Feedwater Check Valve Which Was Leaking. Unusual Event Under Licensee Emergency Plan Was Declared,Due to Required Shutdown: Difference between revisions

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PRELIMINARY NOTIFICATIOj! 0F EVENT OR UNUSUAL OCCURRENCE--PHO-Ill 3 Date July 31, 1987 AAVuct &W--
PRELIMINARY NOTIFICATIOj! 0F EVENT OR UNUSUAL OCCURRENCE--PHO-Ill 3 Date July 31, 1987 AAVuct &W--
This preliminary notification constitutes EARL 4 notice of events of POSSIBLE safety or public interest significance. The information is as initially received without O verification or evaluatioc, and is basically all that is known by the Region !!!
This preliminary notification constitutes EARL 4 notice of events of POSSIBLE safety or public interest significance. The information is as initially received without O verification or evaluatioc, and is basically all that is known by the Region !!!
jstaff on this date.
jstaff on this date.
Facility: Detroit Edison                               Licensee Emergency Classification:
Facility: Detroit Edison Licensee Emergency Classification:
Fenni 2                                 X Notification of an Unusual Event Newport MI 48166                             Alert Site Area Emergency Docket No. 50-341                           General Emergency Not Applicable
Fenni 2 X Notification of an Unusual Event Newport MI 48166 Alert Site Area Emergency Docket No. 50-341 General Emergency Not Applicable


==Subject:==
==Subject:==
FEEDWATgCHECKVALVELEAKAGF On July 27, 1987, the licensee reduceo power to approximately two perunt to repair a feedwater check.nlyg which was leaking. Repair efforts, using a metallic sealant (Furmanite),
FEEDWATgCHECKVALVELEAKAGF On July 27, 1987, the licensee reduceo power to approximately two perunt to repair a feedwater check.nlyg which was leaking. Repair efforts, using a metallic sealant (Furmanite),
h continued throudtf t,er,weeJ.     y}da tpe licensee began to increase power on July 30.
continued throudtf t,er,weeJ. y}d tpe licensee began to increase power on July 30.
h a
The leakage resumed, however, and the licensee commenced a reactor shutdown from three percent pcwer because the leakage (4.2 liters per minute) exceeded Technical Specification limits.
The leakage resumed, however, and the licensee commenced a reactor shutdown from three percent pcwer because the leakage (4.2 liters per minute) exceeded Technical Specification limits.
(The check valve, which is locatd in the reactor building steam tunnel, is part of the reactorcoolantsystempressureboundary.)
(The check valve, which is locatd in the reactor building steam tunnel, is part of the reactorcoolantsystempressureboundary.)
During the shutdown, the reactor scramed as a result of feedwater flow variations while reactor power and pressure were being reduced.
During the shutdown, the reactor scramed as a result of feedwater flow variations while reactor power and pressure were being reduced.
!                  Because of the required shutdown.the licensee declared an Unusual Event under its emergency plan. Appropriate governmental notifications were made.
Because of the required shutdown.the licensee declared an Unusual Event under its emergency plan. Appropriate governmental notifications were made.
C The licensee is reviewing possible repair options for the leaking valve. The resident
C The licensee is reviewing possible repair options for the leaking valve. The resident
'\
(
(    inspectors will monitor the repair activities. An Operational Safety Team member was on site and observed the licensee's actions during the event. The plant is expected to remain shut down for greater than 48 hours.
inspectors will monitor the repair activities. An Operational Safety Team member was on
'\\
site and observed the licensee's actions during the event. The plant is expected to remain shut down for greater than 48 hours.
The State of Michigan will be notified.
The State of Michigan will be notified.
There has been local news media interest in the shutdown.
There has been local news media interest in the shutdown.
The Headquarters Duty Officer was notified of the shutdown at 2:45 a.m. (EDT). This inf)rmationiscurrentasof12 noon (EDT), July 31, 1987.                                             -)[g i
-)[g The Headquarters Duty Officer was notified of the shutdown at 2:45 a.m. (EDT). This inf)rmationiscurrentasof12 noon (EDT), July 31, 1987.
CONTACT:     P. Pelke                           C. Norelius                                     1 FTS 388-5560                       FTS 388-5717                                 @
i CONTACT:
DISTRIBUTION:
P. Pelke C. Norelius 1
H. St.                         EDO         NRR       E/W       Willste     Mail: ADM:DMB Chairman Zech                 PA                     IE         NMSS                 DOT:Trans only Com Roberts                   ELD                   OIA       RES Com.= Bernthal                                       AE00                   NRC Ops Ctr Com. Carr ACRS                           SP               Regional Offices SECY CA                             INP0                   NSAC CPOR-~9 ~                        R!ll Resident Office Licensee:                     (Corp. Office - Reactor Lic. Only) m            9711030108 870731                                                     Region !!!
FTS 388-5560 FTS 388-5717 DISTRIBUTION:
fNO-I                                                                    #* "
H. St.
(J)d                         87-103 PDR C/R Distribution: Chm, Cmes W. GC, CA, MAS. Historian, SECY, Records.
EDO NRR E/W Willste Mail: ADM:DMB Chairman Zech PA IE NMSS DOT:Trans only Com Roberts ELD OIA RES Com.= Bernthal AE00 NRC Ops Ctr Com. Carr ACRS SP Regional Offices SECY CA INP0 NSAC CPOR-~9 R!ll Resident Office
S n                                                                                                     i}}
~
Licensee:
(Corp. Office - Reactor Lic. Only) 9711030108 870731 Region !!!
m (J)d fNO-I 87-103 PDR C/R Distribution:
Chm, Cmes W. GC, CA, MAS. Historian, SECY, Records.
S i
n}}


{{PNO-Nav|region=III}}
{{PNO-Nav|region=III}}

Latest revision as of 06:30, 4 December 2024

PNO-III-87-103:on 870727,licensee Reduced Power to Approx 2% to Repair Feedwater Check Valve Which Was Leaking. Unusual Event Under Licensee Emergency Plan Was Declared,Due to Required Shutdown
ML20212E225
Person / Time
Site: Fermi 
Issue date: 07/31/1987
From: Norelius C, Patricia Pelke
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-87-103, NUDOCS 9711030108
Download: ML20212E225 (1)
v • d • e


_ _ _ _ _ _ -

PRELIMINARY NOTIFICATIOj! 0F EVENT OR UNUSUAL OCCURRENCE--PHO-Ill 3 Date July 31, 1987 AAVuct &W--

This preliminary notification constitutes EARL 4 notice of events of POSSIBLE safety or public interest significance. The information is as initially received without O verification or evaluatioc, and is basically all that is known by the Region !!!

jstaff on this date.

Facility: Detroit Edison Licensee Emergency Classification:

Fenni 2 X Notification of an Unusual Event Newport MI 48166 Alert Site Area Emergency Docket No. 50-341 General Emergency Not Applicable

Subject:

FEEDWATgCHECKVALVELEAKAGF On July 27, 1987, the licensee reduceo power to approximately two perunt to repair a feedwater check.nlyg which was leaking. Repair efforts, using a metallic sealant (Furmanite),

continued throudtf t,er,weeJ. y}d tpe licensee began to increase power on July 30.

h a

The leakage resumed, however, and the licensee commenced a reactor shutdown from three percent pcwer because the leakage (4.2 liters per minute) exceeded Technical Specification limits.

(The check valve, which is locatd in the reactor building steam tunnel, is part of the reactorcoolantsystempressureboundary.)

During the shutdown, the reactor scramed as a result of feedwater flow variations while reactor power and pressure were being reduced.

Because of the required shutdown.the licensee declared an Unusual Event under its emergency plan. Appropriate governmental notifications were made.

C The licensee is reviewing possible repair options for the leaking valve. The resident

(

inspectors will monitor the repair activities. An Operational Safety Team member was on

'\\

site and observed the licensee's actions during the event. The plant is expected to remain shut down for greater than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.

The State of Michigan will be notified.

There has been local news media interest in the shutdown.

-)[g The Headquarters Duty Officer was notified of the shutdown at 2:45 a.m. (EDT). This inf)rmationiscurrentasof12 noon (EDT), July 31, 1987.

i CONTACT:

P. Pelke C. Norelius 1

FTS 388-5560 FTS 388-5717 DISTRIBUTION:

H. St.

EDO NRR E/W Willste Mail: ADM:DMB Chairman Zech PA IE NMSS DOT:Trans only Com Roberts ELD OIA RES Com.= Bernthal AE00 NRC Ops Ctr Com. Carr ACRS SP Regional Offices SECY CA INP0 NSAC CPOR-~9 R!ll Resident Office

~

Licensee:

(Corp. Office - Reactor Lic. Only) 9711030108 870731 Region !!!

m (J)d fNO-I 87-103 PDR C/R Distribution:

Chm, Cmes W. GC, CA, MAS. Historian, SECY, Records.

S i

n

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