05000339/LER-1980-016-03, /03L-0:on 800607,during Hot Standby,Steam Supply to Steam Driven Auxiliary Feedwater Pump Was Isolated. Caused by Attempt to Repair Cap to Body Leak on Mainsteam Check Valve.Valve Repaired & Steam Supply to Pump Restored

/03L-0:on 800607,during Hot Standby,Steam Supply to Steam Driven Auxiliary Feedwater Pump Was Isolated. Caused by Attempt to Repair Cap to Body Leak on Mainsteam Check Valve.Valve Repaired & Steam Supply to Pump Restored

ML19318D113
Person / Time
Site:	North Anna
Issue date:	07/02/1980
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318D110	List: 05000339/LER-1980-016, Forwards LER 80-016/03L-0 05000339/LER-1980-016-03, /03L-0:on 800607,during Hot Standby,Steam Supply to Steam Driven Auxiliary Feedwater Pump Was Isolated. Caused by Attempt to Repair Cap to Body Leak on Mainsteam Check Valve.Valve Repaired & Steam Supply to Pump Restored
References
LER-80-016-03L-01, LER-80-16-3L-1, NUDOCS 8007070363
Download: ML19318D113 (2)

LER-1980-016, /03L-0:on 800607,during Hot Standby,Steam Supply to Steam Driven Auxiliary Feedwater Pump Was Isolated. Caused by Attempt to Repair Cap to Body Leak on Mainsteam Check Valve.Valve Repaired & Steam Supply to Pump Restored

Event date:
Report date:
3391980016R03 - NRC Website

text

._

,(J U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK / / / / / / / (1)

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

/0/1/

/V/A/N/A/S/2/ (2)

/0/0/-/0/0/0/0/0/-/0/0/ (3)

/4/1/1/1/1 (4)

/ / / (5)

LICENSEE CODE LICENSE NUMBER LICENSE TYPE CAT 0/1/

/L/ (6)

/0/5/0/0/0/3/3/9/ (7)

/0/6/0/7/8/0/ (8)

/ 0/ 7/ 0/2/8/0 (9)

DOCKET NUMBER EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)

/0/2/

/

On June 7, 1980 with Unit 2 in the Hot Standby condition the steam supply to

/

/0/3/

/

the steam driven auxiliary feedwater pump was isolated to repair a cap to body /

/0/4/

/

leak on a main steam check valve. This event is reportable pursuant to

/

/0/5/

/

T.S. 6.9.1.9.b.

Two motor driven auxiliary feedwater pumps were operable

/

/0/6/

/

and the LCO was met; therefore, the public health and safety were not

/

/0/7/

/

affected.

/

/0/8/

/

/

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

/0/9/

/H/H/ (11) /E/ (12) LBJ (13) /V/A/L/V/E/X/ (14) $/ (15) e/ (16)

SEQUENTIAL OCCURRENCE REPORT PrVISION LER/R0 EVENT YEAR REPORT NO.

CODE TYPE NO.

(17) REPORT NUMBER

/8/0/

/-/ /0/1/6/

/\\/

/0/3/

/L/

/-/

$/

ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

/B/ (18) /Z/ (19) /Z/ (20) /Z/ (21) /0/0/0/0/ (22) g/ (23) /N/ (24) /A/ (25) /P/0/3/2/ (2(

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)

/1/0/

/

The steam supply to the steam driven auxiliary feedwater pump was is.? lated to /

/1/1/

/

repair a cap to body leak on a main steam check valve. The valve was repaired /

/1/2/

/

and the steam supply to the steam driven auxiliary feedwater pump restored.

/

GQL

/

/

/1/4/

/

/

FACILITY METHOD OF STATUS

% POWER OTHER STATUS

/1/5/

/B/ (28)

/0/0/0/ (29) /

NA

/(

} DISCOVERY DISCOVERY DESCRIPTION (32)

/C/ (31)

/ OPERATOR OBSERVATION /

ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35)

LOCATION OF RELEASE (36)

/1/6/

/Z/ (33)

/Z/ (34) L NA

/

/

NA

/

PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION (39)

/1/7/ [0/0/0/ (37) /Z/ (38) /

NA

/

PERSONNEL INJURIES NUMBER DESCRIPTION (41)

/1/8/ /0/0/0/ (40) /

NA

/

LOSS OF OR DAMAGE TO FACILITY TYPE

DESCRIPTION

/1/9/

/Z/ (42) /

NA

/

PUBLICITY ISSUED DESCRIPTION (45)

NRC USE ONLY

/2/0/

/N/ (44) /

NA

/////////////

NAME g g g

. CARWRIGHT PHONE (703) 894-5151

t, Virginia Electric and Power Company North Anna Power Station, Unit 2 Attachment: Page 1 of 1 Docket No. 50-339 Report No. LER 80-016/03L-0

Description of Event

On June 7, 1980 with Unit 2 in the Hot Standby condition the steam supply to the steam driven auxiliary feedwater pump was isolated to repair a cap to body leak on a main steam check valve. This event is reportable pursuant to T.S. 6.9.1.9.b.

Probable Consequences of Occurrence Two motor driven auxiliary feedwater pumps were operable and the steam driven auxiliary feedwater pump was returned to service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> limit specified by the Action Statement of the LCO (T.S. 3.7.1.2);

therefore, the public health and safety were not affected.

Cause of Event

The steam supply to the auxiliary feedwater pump was isolated to repair a cap to body leak on a main steam check valve.

Immediate Corrective Action

The check valve leak was repaired and the steam supply to the steam driven auxiliary feedwater pump restored. The steam driven auxiliary feedwater pump was tested to prove operability immediately after the steam supply was restored.

Scheduled Corrective Action No scheduled corrective actions are required.

Actions Taken To Prevent Recurrance No actions to prevent recurrance are required.