ML19262B473

Discusses Extension Review Matters for Preliminary Design Approvals,In Response to Submitting Amend 14 to RESAR-3S

ML19262B473
Person / Time
Site:	05000545
Issue date:	12/13/1979
From:	Vassallo D Office of Nuclear Reactor Regulation
To:	Anderson T WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
References
NUDOCS 7912280049
Download: ML19262B473 (5)

Text

n e c T? p R.

g(f.mk UNITED STATES NUCLEAR REGULATORY COMMISSION h s, o

WASHINGTON. D. C. 20555

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Docket No. STN 50-545 DEC 131979 Mr. Tom M. Anderson, Manager Nuclear Safety Department Westinghouse Electric Corporation P. O. Box 355 Nuclear Center - Bay 415 Pittsburgh, Pennsylvania 15230

SUBJECT:

EXTEt!SION REVIEW MATTERS FOR PRELIMItiARY DES:5N A?PROVALS The Commission's August 22, 1978 policy statement on stardardization inchdes a provision which allows any Preliminary Design Approval 'FJA) that had tsen previously issued for a three-year term to be extended f:r two addi-icnal years. This provision applies to PDA-7 issued for the RESAR-35 applicati:n.

As set forth in the policy statement, each application f:r a PDA exter. sic, will be subject to an assessment of the design with respect to the Categ: y I, II, III, and IV matters approved for implementation since the regulattry requirements cutoff date for the PDA in question.

By letter dated December 15, 1978, you submitted Amenc e-t 14 to RESAP.-35.

This amendment contained your response to the Category I, II, III, in: Il mat srs approved for implementation since the regulatory require.er s cutoff cati fcr RESAR-35.

Your letter also requested a two-year extensi:n for ?DA-7 as ; oviced lay the Commission's policy statement.

We find that Amendment 14 contains your response to ths a egory I, I:, ::I, and IV matters approved for implementation through September I, 1978. There arE a nt.nber of additional matters which have been approved for impienentation since. at cate.

These matters are identified in the enclosures.

Should you desire PDA-7 to be extended for two additiona' years, we requsst that you provide an assessment of the RESAR-35 design agair.s: each matter ider-ified in the enclosures which is applicable to the RESAR-3S :ssi;n.

Upon recei t of your responses, the staff will review them as follows:

1) The staff will review your responses (these a'ria:/ pr vics; in Amencment 14 and those you will provide o thi

.a-ers in ne enclosures) to determine whether they are co -:ets.

If ths staff determines that your responses are com;'Ete, we will a:miri-ti-stratively extend PDA-7 for two ad:iti:nal yei-s 5;bject t:

a staff acceptance of your proposes resolu-ion #:-

ne a:pli:a:le Category II, III, and IV matters.

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DEC 1 i i~

Mr. Tom M. Anderson 2)

If the RESAR-35 design is to be referenced in a constrL: tion permit application, we will initiate a de ailed extension rev'ew as soon as we are infomed by a utility-a:plicant that it wil~

reference the RESAR-35 design.

It is anticipated that -he staff will require additional information in or:er to comple.a the detailed e. tension review. You will be notifiec of the addit'otti information requirements as soon as they are ceterminec.

The staff's detailed extensicn review will be concucted according to the following guidelines:

a)

Category I Matters - This review will determine whether you nave clearly celineated the extent to which the design already conforms to these matters. There should be no changes to tre design resulting from the staff's review of Categcry I m.attirs.

b)

Category II Matters - This review will define the extent to wnicn the-cesign conforms, or provices an accepta:le altsrnitive, to these matters.

For those cases wnere the desic, is not 'n substantial conformance with these ratters or acceatable al.ar-natives are not provided, you shcLic demcnstrate wny cor.for ar:e is not necessary.

The outcome of the staff revien may resu'.: in additional requirements.

c)

Catecory III Matters - This review will determine the exten-to wnicn tne oesign conforms to these ratters or wne ner ac:ep atle alternatives are provided.

If the casign coes no: confc-m o the stated Category III requirements or no acceptable alterr.ati.e has been provided, staff-approved revisions to the design w'll be required.

d)

Category IV Matters - Category IV matters are those whic.n have not oeen reviewac of the RRRC, but which the Dire: tor, hRR, deems to have sufficient safety attributes to warrant tr.eir being addressed during the PDA extension review.

These matters w'l: be treated identically to the Category II matters.

Ycur response to each matter ican-ified in the enclosures shoul: be sL:mi-ted is an amendment to the RESAR-3S apolication in the same for as was used for Amen:-

ment 14. This amendment should also include the additional inf:rmatica f:r the matters applicable to RESAR-35 that you provided in Amendment 25 to the F.ESAR 11 application.

In order to facilitate timely completion of our review, we suggest that your submittal be filed as soon as practical.

It should be noted that the staff's review of the Three ",ile Island Urit I TIC-2) accident has not yet been coraleted. Consequently, at tnis tim, we canr:- icin-tify all of the licensing recaire ents resulting from our revie of tr e

".: -E accident whicn may be applicacis o RE5AR-35. ae will c;tif y:a rega-d"; these accitional re:;Lirements at the ti e that we initia e tne :etaiisd exte,si:

re.ies icentified in item (2) above.

300RORSHQL

13 h/3 Mr. Tom M. Anderson If you require any clarification of the matters discussed in this letter, please contact Patrick D. O'Reilly, the s aff's assigned licensing project manager.

Sincerely, f/

/

Domenic B. Vassallo, Acting Directcr Division.of Project Management Office of Nuclear Reactor Regulation

Enclosures:

1.

Category I Matters 2.

Category III :4atters 1648 081

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ENCLOSURE NO. 2 CATEGORY III MATTER APPROVED BY RRRC SINCE SEPTEMBER 1, 1978*

EITECIIVE DOCUMENT DATE NO.

REVISION TITLE 1/02/79 NUREG-O:50, Anticipated Transients Without Scram -

V lum 3 Provide the modifications of Alternative 4 of NUREG-0460 Volume 3, by amendment of all currently-effective preliminary reference design approvals. Based on the premise that the effective date of the rule will be no later than January 1, 1980, the modifications of all plants that reference these amended preliminary design approvals should be com-pleted before these plants are issued an OL.

• For purposes of this review, ATWS will be considered a Category til matter since it involves backfitting of requirements on approved PDA's.

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