ML18139A513

LER 80-013/03L-0:on 800815,during Startup Testing,Boric Acid Concentration of 13.8% Was Reported in 1-CH-TK-1C & 2-SI-TK- 2.Caused by Pumping Boric Acid from Boron Evaporator Bottoms Tank to Boric Acid Storage Tank W/O Sampling

ML18139A513
Person / Time
Site:	Surry
Issue date:	09/12/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A506	List: ML18139A505 ML18139A512 ML18139A513 ML18139A514
References
LER-80-013-03L-03, LER-80-13-3L-3, NUDOCS 8009220398
Download: ML18139A513 (2)

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I During startup testing, with Surry Unit No. 2 critical at 0% power, a boric acid concen-1 1JJJ J tration of 13.8% was reported in 1-CH-TK-lC and 2-Sl-TK-2. This is less conservative with respect to the requirements of T.S. 3.2.B.3 and T.S. 3.3.A.3 and is reportable per

~- l T.S. 6.6.2.b.(2). All *required flow _:paths remained operable and had the required capa-bility for reactor control. Therefore, the health and safety of the public were not affected.

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jThe cause is determined to be due to pumping the Boric Acid from Boron Evaporator Bottom9 LI:IIJ !Tank (l-BR-TK-5) to Boric Acid Storage Tank (1-CH-TK-lC) without sampling. The correc-tive action was to reinstruct the operators to use approved procedures._

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e e ATTACHMENT I (PAGE 1 OF 1)

SURRY POWER STATION, UNIT NO. 2 DOCKET NO: 50-281 REPORT NO: 80-013/03L-0 EVENT DATE: 08-15-80 TITLE OF REPORT: EXCESSIVE BORIC ACID CONCENTRATION IN BORON INJECTION TANK

1. DESCRIPTION OF EVENT:

During startup testing with Surry Unit No. 2 critical at 0% power, a Boric Acid concentration of 13.8% was reported in 1-CH-TK-lC and 2-SI-TK-2. The allowable Technical Specification Range is 11.5-13%.

2. PROBABLE CONSEQUENCES/STATUS OF REDUNDANT SYSTEMS:

1-CH-TK-lC and 2-SI-TK-2 provide boric acid for reactor control for Unit No. 2. All required flow paths remained operable. Adequate capability for reactor control was available at all times. Therefore, the health and safety of the public were not affected.

3. CAUSE OF THE EVENT:

The cause of the event is determined to be operator error. The contents of the Boron Evaporator Bottoms Tank (l-BR-TK-5) were pumped into Boric Acid Storage Tank 1-CH-TK-lC without sampling .

4. U1MEDIATE CORRECTIVE ACTION:

The reactor was taken subcritical and the tanks were diluted to bring the concentration of boric acid within specifications. Operators were reinstruc-ted to use approved procedures.

5* SCHEDULED CORRECTIVE .ACTION:

None required.

6. ACTION TAKEN TO PREVENT RECURRENCE:

Administrative controls have been established to minimize recurrence.

7. GENERIC IMPLICATIONS :

None