ML20011F753

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Informs NRC of Apparent Inconsistency Between Min Level of Boric Acid Solution to Be Maintained in Boric Acid Storage Tanks Per Tech Specs & Amount of Deliverable Boric Acid Assumed in Safety Analyses
ML20011F753
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 02/26/1990
From: Fay C
WISCONSIN ELECTRIC POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CON-NRC-90-013, CON-NRC-90-13 VPNPD-90-090, VPNPD-90-90, NUDOCS 9003070389
Download: ML20011F753 (2)


Text

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i Electnc l POWER COMPANY >

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231 W Mct gyt Po Ikm 204i Mitwoukee. WI L3201 (414)221 2345

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< VPNPD-90-090 10 CFR 50.72  ;

NRC-9 0-013 -

February 26, 1990 i U. S. NUCLEAR REGULATORY COMMISSION Document Control Desk Mail Station P1-137 Washington, D._C. 20555 Gentlement DOCKETS 50-266 AND 50-301 BORIC ACID STORAGE TANK MINIMUM LEVEL L POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 This letter is provided to inform the NRC of an apparent inconsistency between the minimum level of boric acid solution to be maintained in the boric acid storage tanks as specified in the^

x Technical Specifications and the amount of deliverable boric acid assumed in safaty analyses. Based on a preliminary evaluation, a boric acid storage tank level of 65% or_ greater is deemed necessary to meet safety analysis requirements and be able to take a unit to cold shutdown. The Technical Specifications, however, allow the tank levels to be as' low as 28%. _

At the time of completing the evaluation,.the two lined up tanka l (T6A and T6C) were at 80% and 59%, respectively. Some of the

. common tank (T6B) inventory was~ transferred to T6C to bring ~both lined up tanks to a level greater than 65%._ Additionally, the NRC was notified of this self-identified condition in accordance with 10 CFR 50.72 (b) (2) iii, "Any event or. condition that alone s

would have prevented the fulfillment of the safety function of structures or systems that are needed to: (A) Shut down the reactor and maintain it in a safety shutdown condition...."

We.are contracting with Westinghouse to perform a reanalysis of the applicable steam line rupture and loss-of-coolant accident safety analyses. A determination of reportability and resolution of any actual inconsistencies will be based on the completed reanalysis.

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9003070389 900226 ) dD

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o, e NRC Document Control Des.%

February 26,.1990 Page 2 If additional information is needed, please do not hesitate to contact us.

Very truly yours, g4p C. W. ay Vice President

. Nuclear Power

. Copies to NRC Regional Administrator, Region III NRC Resident Inspector 1

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