05000280/LER-1980-071-03, /03L-0:on 801119,primary Grade Water Discharged While Releasing Contaminated Drains Tank.Caused by Performing Two Procedures Simultaneously.Release Terminated & Water Sampled

/03L-0:on 801119,primary Grade Water Discharged While Releasing Contaminated Drains Tank.Caused by Performing Two Procedures Simultaneously.Release Terminated & Water Sampled

ML18139A932
Person / Time
Site:	Surry
Issue date:	12/18/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A930	List: 05000280/LER-1980-071-03, /03L-0:on 801119,primary Grade Water Discharged While Releasing Contaminated Drains Tank.Caused by Performing Two Procedures Simultaneously.Release Terminated & Water Sampled 05000281/LER-1980-043-03, /03L-0:on 801122,PT-33 Failed to Meet Required Criterion of 0.05 Inches of Water.Caused by Excessive Leakage from 2B Battery Room Door.Battery Room Door Repaired ML18139A929
References
LER-80-071-03L-01, LER-80-71-3L-1, NUDOCS 8012230499
Download: ML18139A932 (2)

LER-1980-071, /03L-0:on 801119,primary Grade Water Discharged While Releasing Contaminated Drains Tank.Caused by Performing Two Procedures Simultaneously.Release Terminated & Water Sampled

Event date:
Report date:
2801980071R03 - NRC Website

text

LICENSEE EVENT REPORT

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LICENSEE CODE 14 15 LICENSE NUMSER 25 26 LICENSE TYPE 30 57 CAT 58 8

=~~;~; ~01 o I s l O I o I 01 21 s I o 101 11 1 I 1 I 9 I s I o 101 1 I 2 I 1 I a I s Io 10 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

I On Novanber 11, 1980 with Unit No. 1 at CSD and Defueled, Prirrary Grade water was inad-l vertently discharge::l. while releasing a contaminated drains tank. This is contrary to I T.S. 3.11.A.4 a'.nci is rep'.)rtable per T.S. 6.6.2.b. (2).

The arrount of activity released was less than that allowed by Tech Specs Therefore, the health and safety of the TI)) I

@JI] I public were not affected.

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CODE SUB CODE COMPONENT CODE SUB CODE

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11 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REPORT NO.

CODE TYPE 10 11 11 I l..,.....l 10 !3 I

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23 24 26 27 28 29 30 VALVE SUBCODE

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CAUSE

DESCRIPTION AND CORRECTIVE ACTIONS @

. The event was cause::l. by performing tv10 procedures simultaneously.

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t, j O j release and sample::l.. _ the Prirrary Grade water.

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METHOD OF A

DISCOVERY DISCOVERY DESCRIPTION '23'

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10 J. L. Wilson U",

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.LOCATION OF RELEASE @

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• • *.., A;,ACHMENT l (PAGE 1 OF 1) e SURRY Pew.ER STATION, UNIT 1 DCCKEI' NO:

50-280 REPORI' NO:

80-071/03L-0 EVENT DATE:

11-19-80 TITLE OF REPORI':

UNSCHEDULED RELEASE-PG WATER

1.

DESCRIPrICN OF EVENT:

During routine surveillance of a liquid waste release from "B" CDI', a higher than usual release rate was noticed.

Investigation sha.t1ed that a Primary Grade Water (PG) valve was open.

PG water was inadvertently being discharged along with contents of "B" CDT.

This is contrary to T.S. 3.11.A.4 and is rep:,rtable as :per T.S. 6.6.2.b. (2).

2.

PROBABLE CONSEQJENCES AND STATUS OF REDUNDANT SYSTEMS:

Samples of the Pr.irrary Grade water were taken and counted.

The evaluation of the quantity of PG water that was released (74 gallons) and activity detected in the PG water showed the unsampled release to be *within Technical Specifications (71 µCi or.0153% of IIBX. allowed).

In addition, the flow path was through the radiation rronitor and the autanatic function vK)uld have terminated the release if a higher radioactivity set p:,int level had been r-eached.

Therefore, the health and safety of the public were not affected.

3.

CAUSE

Primary Grade water was being used to dilute the contents of Lwrr SA and SB.

The piping arrangement is such that during the release of "B" CDT, sane (74 gallons) of this PG water was discharged via HCV-LW-104A, along with the con-tents of "B" CDT.

Operators were utilizing two separate procedures that were not specifically written for performance at the same time.

4.

IMMEDIATE CORRECTIVE ACTION

The PG valve was secured as soon as a greater than nonral release rate was noticed by the operator. Samples were taken of the PG water for nuclide identification.

5.

SUBSEQJENT CORRECI'IVE ACI'ION:

None required.

6.

ACTION TAKEN TO PREilENT REaJRRENCE:

Applicable procedures will be revised to include precautions to be aware of the hazard.

7.

GENERIC IMPLICATIONS None.