ML20080C507
| ML20080C507 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 08/12/1983 |
| From: | Knighton G Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20080C509 | List: |
| References | |
| NUDOCS 8308260250 | |
| Download: ML20080C507 (8) | |
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7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSI0h PACIFIC GAS & ELECTRIC COW ANY DOCKET NO. 50-275 NOTICE OF CONSIDERATION OF ISSUANCE OF Af'ENDMENT TO FACILITY OPERATING LICENSE AND PROPOSED NO SIGHIFICANT HAZARDS CONSIDERATION DETERilINATIGN AND GPPORTUNITY FOR HEARING The U. S. Nuclear Regulatory Comission (the Cornission) is considering issuance of an amendrent to Facility Operating License No. DPR-76, issued to Pacific Gas & Electric Company, (the licensee), for operation of the Diablo Canycn, Unit 1, Nuclear Power Plant located in San Luis Obispo, California.
The proposed anendnent would change the response time for containnent spray initiation in Table 3.3-5 of the Facility Technical Specifications from equal to or less than 27.5 seconds to equal to or. less than 48.5 seconds.
As a result of this change, Sections 3.3.2, 3.4.6.1.4, 4.8.1 and Table 4.8-2 of' the Technical Specifications would have to be updated to reflect this change in accordance with the Licensee's submittal dated June 23, 1983 and supplerental letter dated July 26 1983.
Before issuance of the proposed license amendment, the Cornission will
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have nade findings required by the Atomic Energy Act of 1954, as anended (the gg Act) and the Comission regulations.
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The Comission has nade a proposed deternination that the atendment request involves no significant hazards consideration. Under the Comission's regulations 8:s g
in 10 CFR 50.92, this neans that operation of the facility in accordance with
..c o N4 the proposed amendment would not (1) involve a significant increase in the
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probability or consequences of an accident previously evaluated; or (2) create
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The Commission has provided guidance for the application of the crit eria in 10 CFR 50.92 by providing examples of amendments that are con id s ered not likely to involve significant hazards consideration (48 FR 14870)
One such example is (vi) a change which either may result in some increase to the probability or consequences of a previously-analyzed accident or may redu n
some way a safety margin, but where the results of the change are clearly within all acceptable criteria with respect to the system or component sp in the Standard Review Plan; for example, a change resulting from the e
application of a small refinement of a previously used calculational nodel design method.
The Licensee is proposing to change maximum response time for initiati on of containment spray from 27.5 seconds to 48.5.
The licensee performed an analysis of the change in response time.
The results of the analysis indicated an increase in containment peak pressure, following a loss-of-accident
, from 46.65 psig to 46.91 psig.
The FSAR value of the two-hour thyroid dose at the F
site boundary was previously calculated to be 95.9 REti for the case of no post-LOCA delay in the containment spray.
The licensee has reanalyzed the above value and the value for the proposed delay in containment spra a current verified code and dose conversion factors provided in Revision 1 to Regulatory Guide 1.109.
The results of the reanalyses indicate that two-hour thyroid dose at the site would be 85.6 REli for no spray delay and f4 for the proposed delay.
While there is a small reduction in the safety margin in both containment pressure and dose consideration on the basis of the analysis using the revised code, they are clearly within acceptabl e criteria, i.e. the design of the containment
, 47 psig, and the 300 REti value in 10 CFR 100.
Therefore, based on these censiderations and the three criteria given in the fdurth paivgraph abova, we have made a proposed determination that this amendment, request invohes;no significant hazards consideration.
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%v 7590-01 The Cornission is seeking public corrents on this proposed deternination.
Any coments received within 30 days af ter the date of publication of this notice will be considered in naking any final determination. The Comission will not normally nake a final determination unless it receives a request for a hearing.
Corrents should be addressed to the Secretary of the Conmission, U. S.
tiuclear Regulatory Comission, Washington, D. C.
20555, ATTN: Docketing and Service Branch.
By Sept.
19, 1983, the licensee nay file a request for a hearing with respect to issuance of the amendment to the subject fdcility operating license and any person whose interest may be af fected by this proceeding and who wishes to participate as a party in the proceeding cust file a written petition for leave to intervene. The request for a hearing and petitions for leave to intervene shall be filed in accordance with the Commisison's " Rules of Practice for Domestic Licensing Proceedings" in 10 CFR Part 2.
If a request for a hearing or petition for leave to intervene is filed by the above date, the Comission or an Atonic Safety and Licensing Board, designated by the Comission or by the Chaiman of the Atonic Safety and Licensing Board Panel, will rule on the request and/or petition and the Secretary of the designated Atomic Safety and Licensing Board will issue a notice of hearing or an appropriate order.
As required by 10 CFR S2.714, a petition for leave to intervene shall set forth with particularity the interest of the petitioner in the proceeding, and how that interest may be affected by the results of the proceeding. The petition should specifically explain the reasons why intervention should be omce >.per.n.i.t.td..wi th..ra.tti.cu.1Af..te.f.e.ter.c.e..to..itte..fal.).cwing..factorn.... 13...the..na.ture....................
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- of the petitioner's right under the Act to be made a party to the proceeding; (2) the nature and extent of the petitioner's property, financial, or other interest in the proceeding; and (3) the possible effect of any order which may be entered in the proceeding on the petitioner's interest. The petition should also identify the specific aspect (s) of the subject matter of the proceeding as to which petitioner wishes to intervene. Any persons who has filed a petition for leave to intervene or who has been admitted as a party nay amend the petition without requesting leave of the Board up to fifteen (15) days prior to the first prehearing conference scheduled in the proceeding, but such an anended petition must satisfy the specificity requirenents described above.
Not later than fifteen (15) days prior to the first prehearing conference scheduled in the proceeding, a petitioner shall file a supplement to the petition to intervene which must include a list of the contentions which are sought to be lititated in the matter, and the bases for each contention set forth with reasonable specificity. Cor.tentions shall be limited to natters within the scope of the anendnent under consideration. A petitioner who fails to file such a supplement which satisfies these requirenents with respect to at least one contention will not be permitted to participate as a party.
Those permitted to intervene become parties to the proceeding, subject to any limitations in the order granting leave to intervene, and have the opportunity to participate fully in the conduct of the hearing, including the opportunity to present evidence and cross-examine witnesses.
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7690-01 If a hearing is requested, the Comission will rake a final detemination on the issue of no significant hazards consideration. The final detemination will serve to decide when the hearing is held.
If the final detemination is that the amendrent requeet involves no significant hazards consideration, the Comission ray issue the amendment and make it effective, notwithstanding the request for a hearing. Any hearing held would take place af ter issuance of the arendment.
If the final detemination is that the ar.endnent involves a significant hazards consideration, any hearing held would take place before the issuance of any anendnent.
Nomally, the Comission will not issue the amendaent until the expira-tion of the 30-day notice period. However, should circunstances change during the notice period such that failure to act in a timely way would result, for exanple, in derating or shutdown of the facility, the Commission cay issue the license anendnent before the expiration of the 30-day notice period, provided that its final oetemination is that the amendment involves no significant hazards consideration. The final detemination will consider all public and State ccments received. Should the Comission take this action, it will publish a notice of issuance and provide for opportunity for a hearing after issuance. The Comission expects that the need to take this action will occur very infrequently.
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- A request for a hearing or a petition for leave to intervene must be filed with the Secretary of the Comission, U. S.
Nuclear Regulatory Comission, Washington, D. C.
20555, Attention: Docketing and Service Branch, or nay be delivered to the Cornission's Public Document Room,1717 H Street, N. W.,
Washington, D. C. by the above date. Where petitions were filed during the last ten (10) days of the notice period, it is requested that the petitioner promptly so inform the Comission by a toll free telephone call to Western Union at (800) 325-6000 (in Missouri (800) 342-6700). The Western Union operator should be given Datagram Identification Number 3737 and the following nessage addressed to George W. Knighton:
petitioner's nane and telephone nunber; date petition was nailed; plant name; and publication date and page number of this FEDERAL REGISTER notice. A copy of the petition should also be sent to the Executive Legal Director, U. S. Nuclear Regulatory Comission, Washington, D. C.
20555, and to Phillip A. Crane Jr., Esq., Pacific Gas & Electric Company, 77 Beale Street, San Francisco, California 94106 and Norton, Burke, Berry
& French P.C., ATTN: Bruce Norton, Esq., 2002 East Osborn Road, Phoenix, Arizona 85016, attorneys for the licensee.
Nontinely filings of petitions for leave to intervene, anended petitions, supplemental petitions and/or requests for hearing will not be entertained absent a deternination by the Cornission, the presiding officer or the Atomic Safety and Licensing Board designated to rule on the petition and/or request, that the l
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. petitioner has nade a substantial showing of good cause for the granting of a late petition and/or request. The determination will be based upon a balancing of the factors specified in 10 CFR 2.714(a)(1)(1)-(v) and 2.714(d).
For further details with respect to this action, see the application for anendment dated June 23, 1983, and suppler: ental information dated July 2ft 1983 which are available for public inspection at the Comission's Public Docunent Roon,1717 H Street, li. W., Washington, D. C. and at the California Polytechnic State University Library, Docunents and flaps Department, San Luis j
Obispo, California 93407.
Dated at Bethesda, itaryland, this 12thday of August,1983.
FOR THE IJUCLEAR REGULATORY C01-f tISS1011 George W. Knighton, Chief Licensing Branch flo. 3 Division of Licensing W
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