05000280/LER-1980-030-01, /01T-0:on 800520,during Routine Chemistry Sampling of Boric Acid Storage Tank a & Injection Tank,Boric Acid Concentration Found Above Limit.Caused by Addition of Excessive Amount of Boric Acid Prior to Sampling

/01T-0:on 800520,during Routine Chemistry Sampling of Boric Acid Storage Tank a & Injection Tank,Boric Acid Concentration Found Above Limit.Caused by Addition of Excessive Amount of Boric Acid Prior to Sampling

ML18139A279
Person / Time
Site:	Surry
Issue date:	05/30/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A277	List: 05000280/LER-1980-030-01, /01T-0:on 800520,during Routine Chemistry Sampling of Boric Acid Storage Tank a & Injection Tank,Boric Acid Concentration Found Above Limit.Caused by Addition of Excessive Amount of Boric Acid Prior to Sampling ML18139A276
References
LER-80-030-01T, LER-80-30-1T, NUDOCS 8006030356
Download: ML18139A279 (2)

LER-1980-030, /01T-0:on 800520,during Routine Chemistry Sampling of Boric Acid Storage Tank a & Injection Tank,Boric Acid Concentration Found Above Limit.Caused by Addition of Excessive Amount of Boric Acid Prior to Sampling

Event date:
Report date:
2801980030R01 - NRC Website

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((TI] I During steady state operation of Unit #1, ri,ut+/-ne,,chemistry sampl i_ng of the

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cu:D [QJ}J wTI ITITI Boric Acid Storage Tank "A" (BAST) and the Boron Injection Tank (BIT) indicated the boric acid concentration to be 13.1%.

This is contrary to T.S. 3.2.B.3 and T.S. 3.3.A.3,and is reportable per T.S. 6,6,2.a.6.

Circulation between the BAST and the BIT was maintained and the system maintained its capability to shutdown the Unit, the.refore the health and I

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More boric acid was added than was desired resn]ti;ilg_J in a concentration of 13 1%

The concentration of boric acid was rednced to within specifications, samples were taken to verify this, and power

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-.ATTACHMENT 1

• **SURRY POWER STATION, UNI., 1 DOCKET NO:

50-280 e

REPORT NO:

80-.030/0lT-0 EVENT DATE:

05/20/80 TITLE O:FJ REPORT:

EXCESSIVE BORIC ACID IN "A" BAST AND BIT

1.

Evenn Description:

During steady state operation of Unit 1, it was found that the boric acid concentration in the Boric Acid Storage Tank (BAST) and the Boron Injection Tank (BIT) was at 13.1%.

This is contrary to T.S.-3.2.B:3 and T.S. 3.3.A.3, and is reportable per T.S. 6.6.2.a.6.

2.

Probable Consequences:

Circulation between the BAST and the BIT was maintained at all times and the CVCS and Safety Injection system remained operational during this event, therefore the health and safety of the general public were not affected.

3.

Cause

Sampling was not performed on the BAST before the boric acid was added to it, ~his allowed excess boric acid to be added.

The maximum required concentration is 13.0 %, the concentration after the addition reached 13.1%.

This small amount of additional boric acid did not affect the ECC systems except to give them greater shutdown capability.

• 4.

Immediate Corrective Action

The immediate corrective action was to start a unit rampdown and dilution of the BAST with approximately 2-3% PG water.

5.

Subsequent Corrective Action:

The actions that followed were to resample the BIT and BAST (BIT= 12.8%, BAST= 12.9%)

6.

Future Action:

Importance of sampling the involved tanks prior to adding solution will be reemphasized to operation personnel.

7.

Generic Implications:

None