ML20084E142

AO 50-244/74-16:on 740918,results of Water Sample Analysis Showed Boron Concentration in a Accumulator Below Tech Spec Limit.Recommendations Made for Closer Surveillance of Boron Concentration in Accumulators

ML20084E142
Person / Time
Site:	Ginna
Issue date:	09/19/1974
From:	Platt C ROCHESTER GAS & ELECTRIC CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20084E141	List: ML20084E138 ML20084E142
References
AO-50-244-74-16, NUDOCS 8304140357
Download: ML20084E142 (2)

Text

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L' FCCNESTER GAS AND ELECTRIC CORPORATION e 69 EAST AVENUE, ROCHESTER, N.Y.14649 i t a t e-ef* f mate.x ,..s n 2703 Ginna Statton Septembe r 19, 1974 Mr. Jart s P. O'Reilly , Director Directorate of Regulatory Operations Region I U. S. Atonic Energy Comiss10o 631 Park Avenue Ring of Prussia, Pennsylvania 19406

Subject:

Abnorn.a l Oc c u rre nce 74-16: Violation of a limiting condition for operation established in the Technical Specifications by allowing the boron contentration in the "A" accumulator to &ct below 1600 ppe

Dear Mr. O'Reilly:

This is to confirr r2y phoac call to Mr. Bert Davis this corning to report Abnorril Occurrente 74-16 at Ginna Statioa.

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The regular bi-conthly samples of water were taken from the "A" and "B" accus:alators on Septeeber 18, 1974 with the plant load at 911 power. The d [C

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results of the analysis showed thst the borou concentration in the The "A"

July h@ i ,

accumulator was 1617 ppa and the "b" accu =ulator was 2551 pp.

1974 analy sis sb7.ed that the boron concentration in the "A" accumulator was 2363 ppa and tht "B" accuculator was 2615 pp.

A second set of sa:ples wre obtained and tbc analysis of these samples gare the saae reselts as listed above.

M As soon as the second set of samples verif'ied that the boron concentration

$$ in the "A" accuazulator m below the Tettinical Specification limit of 1803

$8 pp, partiat drainiry; and filling of the "A" av.unatator began, usi.ng 2330 y pp baron refueling water storage tank water for filling. Al so, an orderly .

O shutdown of the plant begun at the rate of 101 per hour.

5 ID:s Oo San.ples wre analyzed every hour and the boron concentration was above 1800

$ pp by the time the plant load remched 761 pom r. Another sazple verified that the b;ron concentration was above 1!iDD pp. Load redoction was stopped, g

no Af ter ste u: generator chemistry was verified, load pickup began. Partial

" draining and filling of the "A" accumulator continued until the boron con- . ...

centration excecdad 2000 ppui. , // ' /

%C2Gi?V RECEIVED VIA FACSIMILE  % ') e o'

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'The PORC has met and discussed the abnormal occurrence. Recot:xnendations have been mada for closer. surveillance of the boron concentration in the accu =ula-tors.

Vary truly yours,

&? s Charles E. Platt 4 Superintendent .

CEP:fah cc: Mr. J. F. 0%ary, AEC Mr. G. J. Swarthout, RG6E Mr. L. D. White, Jr. , RC&E a

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