LIC-15-0046, Withdrawal of License Amendment Request - License Amendment Request (LAR)14-05; Design and Evaluation of Seismic Class I Structures Using Ascm Developed Floor Response Spectra.

Withdrawal of License Amendment Request - License Amendment Request (LAR)14-05; Design and Evaluation of Seismic Class I Structures Using Ascm Developed Floor Response Spectra.

ML15090A743
Person / Time
Site:	Fort Calhoun
Issue date:	04/01/2015
From:	Cortopassi L Omaha Public Power District
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
LAR-14-05, LIC-15-0046
Download: ML15090A743 (3)

Text

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UiliJU Omaha Public Power District 444 South 1ffh Street Mall Omaha, NE 68102-2247 10 CFR 50.90 LIC-15-0046 April1, 2015 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Fort Calhoun Station, Unit No. 1 Renewed Facility Operating License No. DPR-40 NRC Docket No. 50-285

References:

See Page 3

Subject:

Withdrawal of License Amendment Request - "License Amendment Request (LAR) 14-05; Design and Evaluation of Seismic Class I Structures Using ASCM Developed Floor Response Spectra" The purpose of this letter is to withdraw LAR 14-05 (Reference 1), which the Omaha Public Power District (OPPD) had requested to permit the use of seismic floor response spectra in the design and evaluation of seismic Class I structures and structural elements attached to structures. The NRC had previously (Reference 2) approved these spectra for use in piping, and heating, ventilation, and air conditioning (HVAC) design at Fort Calhoun Station.

In Reference 3, the NRC requested additional information concerning LAR 14-05 to which OPPD responded in Reference 4. A follow-up teleconference with NRC staff was held on February 27, 2015 to discuss the Reference 4 response. As a result of the teleconference, OPPD is withdrawing LAR 14-05 and expects to re-submit a more comprehensive LAR on this issue after further review.

No regulatory commitments are contained in this submittal.

If you should have any questions regarding this submittal or require additional information, please contact Mr. Bill R. Hansher at (402) 533-6894.

Employment with Equal Opportunity

U. S. Nuclear Regulatory Commission L1 C-15-0046 Page2 I declare under penalty of perjury that the foregoing is true and correct. Executed on April 1, 2015.

Lou~~

Site Vice President and CNO LPC/JWC/mle c: M. L. Dapas, NRC Regional Administrator, Region IV C. F. Lyon, NRC Senior Project Manager S.M. Schneider, NRC Senior Resident Inspector Director of Consumer Health Services, Department of Regulation and Licensure, Nebraska Health and Human Services, State of Nebraska

U.S. Nuclear Regulatory Commission LIC-15-0046 Page3 References

1. Letter from OPPD (L. P. Cortopassi) to NRC (Document Control Desk), License Amendment Request (LAR) 14-05; Design and Evaluation of Seismic Class I Structures Using ASCM Developed Floor Response Spectra, dated April 25, 2014 (ML14118A435) (LIC-14-0036)

2. Letter from NRC (S. Bloom) to OPPD (T. L. Patterson), "Safety Evaluation of Alternate Seismic Criteria and Methodologies- Fort Calhoun Station (TAC No. M71408)," dated April 16, 1993 (NRC-93-0150

3. Letter from NRC (C. F. Lyon) to OPPD (L.P. Cortopassi), Fort Calhoun Station, Unit No. 1- Request for Additional Information RE: License Amendment Request to use ASCM-Developed Floor Response Spectra in the Design and Evaluation of Seismic Class I Structures {TAG No. MF4016),

dated December 22, 2014 (ML14353A051) (NRC-14-0138)

4. Letter from OPPD (L. P. Cortopassi) to NRC (Document Control Desk), Response to NRC Request for Additional Information RE: License Amendment Request to use ASCM-Developed Floor Response Spectra in the Design and Evaluation of Seismic Class I Structures (TAG No. MF4016),

dated February 13, 2015 (ML15050A257) (LIC-15-0020)