ML20070H304
| ML20070H304 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/07/1994 |
| From: | Linh Tran Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20070H306 | List: |
| References | |
| NUDOCS 9407210203 | |
| Download: ML20070H304 (8) | |
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7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION ARIZONA PUBLIC SERVICE COMPANY DOCKET NO. STN 50-529 NOTICE OF CONSIDERATION OF ISSUANCE OF AMENDMENT TO FACILITY OPERATING LICENSE. PROPOSED NO SIGNIFICANT HAZARDS
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CONSIDERATION DETERMINATION. AND OPPORTUNITY FOR A HEARING The U.S. Nuclear Regulatory Commission (the Commission) is considering issuance of an amendment to Facility Operating License No. NPF-51 issued to l
Arizona Public Service Company (the licensee) for operation of the Palo Verde Nuclear Generating Station, Unit 2 located in Maricopa County, Arizona.
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The proposed amendment would modify Technical Specification Figure 1
3.2-1, Reactor Coolant Cold Leg Temperature Vs. Core Power Level.
Specifically, the minimum cold leg temperature for core power levels between 90 percent and 100 percent would be changed to 552*F, (which is a reduction of 10*F from the previous TS requirement).
This TS change permits reactor operation at full power with a lower reactor coolant temperature to minimize potential steam generator tube degradation.
Before issuance of the proposed license amendment, the Commission will have made findings required by the Atomic Energy Act of 1954, as amended (the Act) and the Commission's regulations.
The Commission has made a proposed determination that the amendment request involves no significant hazards consideration. Under the Commission's, regulations in 10 CFR 30.92, this means that operation of the facility in accordance with the proposed amendment would not (1) involve a significant f
increase in the probability or consequences of an accident previously 9407210203 940707 PDR ADOCK 05000529 P
evaluated; or (2) create the possibility of a new or different kind of accident from any accident previously evaluated; or (3) involve a significant reduction in a margin of safety. As required by 10 CFR 50.91(a), the licensee has provided its analysis of the issue of no significant hazards consideration, which is presented below:
1.
The proposed change does not involve a significant increase in the probability or consequences of an accident previously evaluated.
This amendment does not involve a significant increase in the probability or consequences of an accident previously evaluated.
Peak pressure events were reanalyzed and LOCA events were partially reanalyzed, and these reanalyses confirmed that the existing safety analysis for cycle 5 for PVNGS Unit 2 remains valid for a 10*F reduction in RCS temperature.
The Unit 2 LOCA and non-LOCA reanalyses were performed to account for additional steam generator tube plugging (1100 total plugged tubes with no restriction on the number of plugged tubes in each steam generator for LOCA analysis, and 2000 total plugged tubes with a maximum of 1000 plugged tubes in each steam generator for non-LOCA analysis).
2.
The proposed change does not create the possibility of a new or different kind of accident from any other previously evaluated, This amendment does not create the possibility of a new or different kind of accident from any accident previously evaluated. The reanalyses performed demonstrated that the current licensing basis analyses results remain valid with a 10*F reduction in RCS temperature, and that the safety system settings remain unchanged.
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The proposed changes do not involve a significant reduction in a margin of safety.
This amendment request will not involve a significant reduction in a.
margin of safety. There is no reduction in the margin of safety since the
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changes apply only to the reactor coolant cold leg temperature, the safety analyses have been reevaluated (and reperformed where necessary) using the new temperature, and the results remain valid. All other safety limits and safety system settings remain unchanged; therefore, there is no reduction in any margin of safety.
The NRC staff has reviewed the licensee's analysis and, based on this review, it appears that the three standards of 10 CFR 50.92(c) are satisfied.
Therefore, the NRC staff proposes to determine that the amendment request involves no significant hazards consideration.
The Commission is seeking public comments on this proposed determination. Any comments received within 30 days after the date of publication of this notice will be considered in making any final determination.
Normally, the Commission will not issue the amendment until the expiration of the 30-day notice period. However, should circumstances change during the notice period such that failure to act in a timely way would result, for example, in derating or shutdown of the facility, the Commission j
may issue the license amendment before the expiration of the 30-day notice period, provided that its final determination is that the amendment involves-no significant hazards consideration. The final determination'will consider all public and State comments received.
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action, it will publish in the FEDERAL REGISTER a notice of issuance and provide for opportunity for a hearing after issuance. The Commission expects that the need to take this action will occur very infrequently.
Written comments may be submitted by mail to the Rules Review and Directives Branch, Division of Freedom of Information and Publications Services, Office of Administration, U.S. Nuclear Regulatory Commission, Washington, DC 20555, and should cite the publication date and page number of this FEDERAL REGISTER notice. Written comments may also be delivered to Room 6D22, Two White Flint North, 11545 Rockville Pike, Rockville, Maryland, from 7:30 a.m. to 4:15 p.m. Federal workdays.
Copies of written comments received may be examined at the NRC Public Document Room, the Gelman Building, 2120 L Street, NW., Washington, DC 20555.
The filing of requests for hearing and petitions for leave to intervene is discussed below.
By August 12, 1994, the licensee may file a request for a hearing with respect to issuance of the amendment to the subject facility operating license and any person whose interest may be affected by this proceeding and who wishes to participate as a party in the proceeding must file a written request for a hearing and a petition for leave to intervene.
Requests for a hearing and a petition for leave to intervene shall be filed in accordance with the Commission's " Rules of Practice for Domestic Licensing Proceedings" in 10 CFR Part 2.
Interested persons should consult a current copy of 10 CFR 2.714 which is available at the Commission's Public Document Room, the Gelman Building, 2120 L Street, NW., Washington, DC 20555 and at the local public
docunant room located at the Phoenix Public Library,12 East McDowell Road, Phoenix, Arizona 85004.
If a request for a hearing or petition for leave to intervene is filed by the above date, the Commission or an Atomic Safety and Licensing Board, designated by the Commission or by the Chairman of the Atomic Safety and Licensing Board Panel, will rule on the request and/or petition; and the Secretary or the designated Atomic Safety and Licensing Board will issue a notice of hearing or an appropriate order.
As required by 10 CFR 2.714, 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 permitted with particular reference to the following factors:
(1) the nature of the petitioner's right under the Act to be made 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 person who has filed a petition for leave to intervene or who has been admitted as a party may amend the petition without requesting leave of the Board up to 15 days prior to the first prehearing conference scheduled in the proceeding, but such an amended petition must satisfy the specificity requirements described above.
Not later than 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
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sought to be litigated in the matter.
Each contention must consist of a specific statement of the issue of law or fact to be raised or controverted.
In addition, the petitioner shall provide a brief explanation of the bases of the contention and a concise statement of the alleged facts or expert opinion which support the contention and on which the petitioner intends to rely in proving the contention at the hearing. The petitioner must also provide i
references to those specific sources and documents of which the petitioner is aware and on which the petitioner intends to rely to establish those facts or expert opinion.
Petitioner must provide sufficient information to show that a genuine dispute exists with the applicant on a material issue of law or fact.
Contentions shall be limited to matters within the scope of the amendment under consideration. The contention must be one which, if proven, would entitle the petitioner to relief. A petitioner who fails to file such a supplement which satisfies these requirements 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.
If a hearing is requested, the Commission will make a final determination on the issue of no significant hazards consideration. The final determination will serve to decide when the hearing is held.
If the final determination is that the amendment request involves no significant hazards consideration, the Commission may issue the amendment and
make it immediately effective, notwithstanding the request for a hearing. Any hearing held would take place after issuance of the amendment.
If the final determination is that the amendment request involves a significant hazards consideration, any hearing held would take place before the issuance of any amendment.
A request for a hearing or a petition for leave to intervene must be filed with the Secretary of the Commission, U.S. Nuclear Regulatory Commission, Washington, DC 20555, Attention:
Docketing and Services Branch, or may be delivered to the Commission's Public Document Room, the Gelman Building, 2120 L Street, NW., Washington, DC 20555, by the above date. Where petitions are filed during the last 10 days of the notice period, it is requested that the petitioner promptly so inform the Commission by a toll-frer telephone call to Western Union at 1-(800) 248-5100 (in Missouri 1-(800) 342-6700).
The Western Union operator should be given Datagram Identification Number N1023 and the following message addressed to Theodore R. Quay, Director, Project Directorate IV-2:
petitioner's name and telephone number, date petition was mailed, plant name, and publication date and page number of this FEDERAL REGISTER notice. A copy of the petition should also be sent to the Office of the General Counsel, U.S. Nuclear Regulatory Commission, Washington, DC 20555, and to Nancy C. Loftin, Esq., Corporate Secretary and Counsel, Arizona Public Service Company, P. O. Box 53999, Mail Station 9068, Phoenix, Arizona 85072-3999, attorney for the licensee.
Nontimely filings of petitions for leave to intervene, amended petitions, supplemental petitions and/or requests for hearing will not be
entertained absent a determination by the Commission, the presiding officer or the presiding Atomic Safety and Licensing Board that the petition and/or request should be granted 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 amendment dated July 1,1994, which is available for public inspection at the Commission's Public Document Room, the Gelman Building, 2120 L Street, NW., Washington, DC 20555 and at the local public document room located at the Phoenix Public Library,12 East McDowell Road, Phoenix, Arizona 85004 Dated at Rockville, Maryland, this 7th day of July 1994.
FOR THE NUCLEAR REGULATORY COMMISSION W.
Linh N. Tran, Project Manager Project Directorate IV-2 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation