ML20039B214

Application for Amend to Licenses DPR-24 & DPR-27,consisting of Tech Spec Change Request 73 to Incorporate Mods to Vital Instrument Power Supplies

ML20039B214
Person / Time
Site:	Point Beach
Issue date:	12/10/1981
From:	Burstein S WISCONSIN ELECTRIC POWER CO.
To:	Clark R, Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20039B215	List: ML20039B214 ML20039B218
References
TAC-42249, TAC-42250, TAC-47494, TAC-47495, NUDOCS 8112220429
Download: ML20039B214 (3)

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Wisconsin Electric vous couvaur 231 W. MICH'GAN, P.O B0X 2046. MILWAUKEE, WI 53201 December 10, 1981 CERTJFIED MAIL Mr. H. R. Denton, Director Office of Nuclear Reactor Regulation U. S NUCLEAR REGULATORY COMMISSION g?e ,N Washington, D. C. 20555 '

Ng$ 7 ~ 3 Attention: Mr. R. A. Clark, Chief Operating Reactors Branch 3 b

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Gentlemen: j{.-

DOCKET NOS. 50-266 AND 50-301 ,,

TECHNICAL SPECIFICATION CHANGE REQUEST NOhf73 INSTRUMENTATION POWER SUPPLY POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2

% ~._. , 7 In accordance with 10 CFR Part 50.59 and the request in Mr. R. A. Clark's August 12, 1981 letter, Wisconsin Electric Power Company ( L '.censee) requests amendments to Facility Operating Licenses DPR-24 and DPR-27 for the Point Beach Nuclear Plant, Units 1 and 2, respectively. The purpose of these amend-ments is to incorporate changes into the plant Technical Speci-fications to reflect modifications presentlr i underway to the vital instrument power supnlies.

By letcer dated April 21, 1980, the NP; equested Licensee to propose additional modifications to the Point Bt 'ch Nuclear Plant vital . instrumentation power supplies to provide additional assurance that a loss of off-site power wotud not result in a potential averloading of the diesel generaters. In letters dated May 29 and Nove.r.ber 3, 1980, Licensee proposed modifica-tions, consisting primarily of t'wo new batteries wit a associated battery chargers, so that each of the four instrument busses would be supplied by its own DC battery power supply. In Mr. Clark's letter, the NRC indicated that an evaluation of our proposed modifications to the instrument bus power supplies had been completed and that these changes were determined to be satisfactory.

In a letter dated September 11, 1981, Licensee presented a propcsed schedule for completion of these modifications.

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e Mr. H. R. Denton ' December 10, 1981-The attached proposed Technical Specificauion pages include changes to the Specifications necessary as a resalt of these modifications. .The specific changec on each page have been identified by a margin bar and are discussed as follows:

[ 1. Specification 15.3.7.A.l.f has been revised and a new Specification 15.3.7.A.l.g added to' require both existing batteries,, DOS and.D06, and their associated DC systems to be operable and at least one of the new batteries, D105 or D106, to be operable provided four battery chargers are operable with a charger carrying the DC loads of each DC main distribution bus before a unit or units shall be made critical.

2. The revised Specificatiens discussed above have been repeated under Specification 15.3.7.A.? to describe the permissible battery configuration under abnormal conditions.

3. Specification 15.3.7.B.l.f-has been revised to delineate that one of the existing batteries may be inoperable for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This time period is in accordance with the existing Specifications.

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4. A new Specification 15.3.7.B.l.g has been added to specify that one of the new batteries, D105 or D106, may be out of service for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> provided .

four battery chargers are operable and carrying th2 DC loads of each main DC distribution bus. A distinction in permissible cut-of-service time is-made between the new battery and the existing batteries since the DC load.c on the main DC distribution busses associated with the acw batteries do not inclUt.L DC breaker control power.

The Bases has been changed on page 15.3.7-4 to. reflect.

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the addition of two batteries with associated battery chargers. ,

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Test and surveillance of the two new batteries and nd chargers will be conducted in the same manner as the' testing b' surveillance of the presently installed instrumentation bus-batteries and chargers. This Lurveillance is specified at Tech-i nical Specification 15.4.6.B. No change _to this Specification is s

necessary as a result of this modification.

Pursuant to the provisions of 10 CFR Part 170.22, we

' have determined that-this license amendment application should be classified as a Class II mmendment. The changes proposed in this amendment are administrative in nature in that they extend the

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'Mr.'H. R'. Denton-  : -

December 10, 1981; 4

existing. Specifications for the plant batteries.and: chargers

? .'to those batteries and. chargers to be i~nstalled'a's'a result of a plant modification. The' substance of the-Specification'is not.ch6nged. A duplicate amendment for:the seco'ndLPoint-Beach unit would:be classified as.a Class'I amendment. Acco'rdingly, '

- - 'weihave' enclosed a check drawn in the amount of $1,6CC for the' amen'dment x approval fees.

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'As specified in the Commission's. regulations,-enclosed are three.. signed originalsLand, under separate cover, 40 copies

.of_this license amendment application. .We request.that the Commission' withhold. issuance of these amendments until after Licensee;has-provided a' written notification that the subject-instrumentation bus power supply modification has- been completed. '

.Pleasel contact us71F you have any questions concerning this application. ,

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Very truly yours,.

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- Executive:Vice President ,

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Sol.Durstein.. -

. Enclosures (Check No. 649802)

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Copy to NRC Resident Inspector ,

Subscribed.-and sworn:to before'me this n;dC day"oftDecember 19811 -

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Notary P11blic, ~ State of. Wisconsin

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My-C0mmission expires ., .

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