LIC-99-0031, Forwards Application for Amend to License DPR-40,increasing Min Required RCS Flow Rate & Changing SRs for RCS Flow Rate

Forwards Application for Amend to License DPR-40,increasing Min Required RCS Flow Rate & Changing SRs for RCS Flow Rate

ML20205J753
Person / Time
Site:	Fort Calhoun
Issue date:	03/31/1999
From:	Gates W OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20205J756	List: LIC-99-0031, Forwards Application for Amend to License DPR-40,increasing Min Required RCS Flow Rate & Changing SRs for RCS Flow Rate ML20205J763 ML20205J767
References
LIC-99-0031, LIC-99-31, NUDOCS 9904120182
Download: ML20205J753 (3)

Text

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March 31,1999 LIC-99-0031 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station PI-137 Washington, DC 20555

Reference:

Docket No. 50-285

SUBJECT:

Application for Amendment of Facility Operating License No. DPR-40 Omaha Public Power District (OPPD) is submitting this " Application for Amendment of Facility Operating License" to increase the minimum required Reactor Coolant System (RCS) flow rate and to change the surveillance requirements for RCS flow rate.

OPPD proposes to amend the following sections in the Fort Calhoun Station Unit No 1 Technical Specifications as follows:

. Increase the RCS flow rate minimum limit for Departure from Nucleate Boiling Ratio margin during power operation above 15% of rated power in Section 2.10.4. The specification is currently 197,000 gallons per minute (gpm) which actually corresponds to an indicated flow rate of 202,500 gpm. An incret.se to 206,000 gpm indicated is proposed.

- Delete the footnote relevant to the Reactor Coolant Flow rate; this eliminates the need for a cross-reference between the actual flow rate and the indicated flow rate. Also change tl'e wording format relevant to the cold leg temperature and the axial shape index in Section 2.10.4.

• Change the minimum frequency for surveillance of the Reactor Coolant System flow rate in Table 3-3 from "M"(Monthly, or at least once per 31 days) to "R"(Refueling, or at least once per 18 months as defined in Section 3.0.2), and a footnote is added to require performance of the RCS flow rate calculation within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after 2 95% .

reactor thermal power.

. Revise the Basis for Section 2.10.4 to support the proposed change to the section.

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. Revise the Basis for Section 3.1 to support the proposed change to Table 3-3.

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U.S. Nuclear Regulatory Commission L,IC-99-0031 Page 2 Attachment A contains a markup reflecting the proposed changer to the Appendix A, Technical Specifications,' of the Facility Operating License. Attachment B provides the " Discussion.

Justification and No Significant Hazards Consideration."

OPPD respectfully requests 30 days to implement the proposed specifications following NRC approval. If you have additional questions, or require further information, please contact me or members of my staff.

' Sincerely, WN h W. G. Gates Vice President TTN/ttn Attachments c: E. W. Merschoff, NRC Regional Administrator, Region IV L. R. Wharton, NRC Project Manager W. C. Walker, NRC Senior Resident inspector B. E. Casari, Director - Environmental Health Division, State of Nebraska Winston & Strawn i

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United States of America Nuclear Regulatory Commission 1

In the Matter of )

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Omaha Public Power District ) Docket No.50-285 I (Fort Calhoun Station )

Unit No.1) )

AFFIDAVIT W. G. Gates, being duly swom, hereby deposes and says that he is the Vice President in charge of all nuclear activities of the Omaha Public Power District; that he is duly authorized to sign and file with the Nuclear Regulatory Commission the attached information concerni'ig the application for Amendment of the Facility Operating License dated March 31,1999, regarding the increase of the minimum limit of the Reactor Coolant System (RCS) flow rate and the change in the surveillance frequency requirements for RCS flow rate; that he is familiar with the content thereof; and that the matters set forth therein are true and correct to the best of his knowledge, information, and belief.

/W. ) h W. G. Gates Vice President STATE OF NEBRASKA )

) ss COUNTY OF DOUGLAS )

Subscribed and sworn to me, a Notary Public in and for the State of Nebraska on this 31 day of March,1999 3

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Notary Public

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