05000338/LER-1981-015-03, /03L-0:on 810328,primary Grade Water Isolation valve,1-CH-217,remained Open Longer than Allowed by Tech Spec.Caused by Personnel Error.Valve Closed & Locked.Caution Added to Instructions

/03L-0:on 810328,primary Grade Water Isolation valve,1-CH-217,remained Open Longer than Allowed by Tech Spec.Caused by Personnel Error.Valve Closed & Locked.Caution Added to Instructions

ML20003G215
Person / Time
Site:	North Anna
Issue date:	04/22/1981
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20003G214	List: 05000338/LER-1981-015, Forwards LER 81-015/03L-0 05000338/LER-1981-015-03, /03L-0:on 810328,primary Grade Water Isolation valve,1-CH-217,remained Open Longer than Allowed by Tech Spec.Caused by Personnel Error.Valve Closed & Locked.Caution Added to Instructions
References
LER-81-015-03L-02, LER-81-15-3L-2, NUDOCS 8104280481
Download: ML20003G215 (2)

LER-1981-015, /03L-0:on 810328,primary Grade Water Isolation valve,1-CH-217,remained Open Longer than Allowed by Tech Spec.Caused by Personnel Error.Valve Closed & Locked.Caution Added to Instructions

Event date:
Report date:
3381981015R03 - NRC Website

text

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

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) p/1/

/V/A/N/A/S/1/ (2)

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

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

/ / / (5).

s LICENSEE CODE LICENSE NUMBER LICENSE TYPE CAT

/L/ (6)

/0/5/0/0/0/3/3/8/

(7)

/0/3/2/8/8/1/

(8) / o/ d 2/ 2/ s/1/ (9)

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

/0/2/

/ On March 28, 1981, with the unit in Mode 5, the primary grade water isolation

/

/0/3/

/ valve to the blender, 1-CH-217, remained open approximately one hour after

/

/0/4/

/ securing makeup flow to the RWST.

T.S. 3.1.1.3.2 requires that this valve be

/

/0/5/

/ locked shut within 15 minutes after use. Since valves FCV-114A, PG water to the /

/0/6/

/ blender, was closed providing isolation to the blender, the health and safety of /

/0/7/

/ the general public were not affected.

/

/0/8/

/

/

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUDCODE COMPONENT CODE SUBCODE SUBCODE

/0/9/

/C/H/ (11) /A/ (12) /A/ (13) /V/A/L/V/E/X/ (14) LD/ (15)

/D/ (16)

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

CODE TYPE NO.

(17) REPORT NUMBER

/8/1/

/-/ /0/1/5/

/\\/

/0/3/

/L/

/-/

/0/

ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD7 PRIME COMP 7 COMPONENT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

('11/ (18) /Z/ (19) /Z/ (20) /Z/ (21) /0/0/0/0/ (22) /Y/ (23) /N/ (24) /N/ (25) /G/2/5/5/ (26)

CAUSE DESCRIPTION AND CORFECTIVE ACTIONS (27)

~

/1/0/

/ After it was realized that 1-CH-217 had been left sen for approximately one

/

/1/1/

/ hour after securing makeup to the RWST, it was mediately closed and locked.

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/1/2/

/

/

/1/3/

/

/

/1/4/

/

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FACILITY METHOD 0.

STATUS

% POWER OTHER STATUS DISCCVERI DISCOVERY DESCRIPTION (32)

/1/5/

[H/ (28)

/0/0/0/ (29)

/

NA

/ (30) /A/ (3o / Operator Observation

/

ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35)

LOCATION OF RELEASE (36)

/1/6/

/Z/ (33)

/Z/ (34) /

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 (43)

TYPE

DESCRIPTION

/1/9/

~~~/Z/ (42) /

NA

/

PUBLICITY

/q ISSUED DESCRIPTION (45)

NRC USE ONLY

\\ //0/

LN[(44) /

NA

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NAME OF PREPARER W. R. CARTWRIGHT PHONE (703) 894-5151 8104280 W

r n -e t

n(_)

Virginia Electric and Power Company North Anna Power Station, Unit 1 Attachment: Page 1 of 1 Docket No. 50-338 Report No. LER 81-015/03L-0

Description of Event

On March 28, 1981, with the unit in Mode 5, the primary grade water isolation valve to the blender,1-CH-217, remained open approximately one hour after securing makeup flow to the RWST. This is contrary to T.S. 3.1.1.3.2 and reportable pursuant to T.S. 6.9.1.9.b.

Probable Consequences of Occurrence Since isolation was provided between the primary grade water supply and the blender by valve FCV-114A the health and safety of the general public were not affected.

Cause of Event

The valve had been inadvertantly left open after securing makeup flow to the RWST.

Immediate Corrective Action

rm When it was realized that 1-CH-217 had been lef t open for approx-(_)

imately one hour af ter securing flow to the '.!WST, it was immediately closed and locked.

Scheduled Corrective Action l

The procedure that controls makeup to the RWST from. the blender contains instructions to close 1-CH-217 within 15 minutes with double verification at the end of the procedure. This evolution demonstrated th2t the makeup process will be intermittent; therefore, a caution will l

be added to the instruction that opens the valve to insure its closure l

within 15 minutes af ter makeup is ter.inated.

Actions Taken to Prevent Reccurrence l

l No action is taken to prevent recurrence.

l l

Generic Implications There are no generic implications.

p

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