LIC-15-0015, Response to Request for Information Regarding Flooding Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident-Fort Calhoun Station Flood Hazard Reevaluation..
| ML15042A127 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 02/04/2015 |
| From: | Cortopassi L Omaha Public Power District |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LIC-15-0015 | |
| Download: ML15042A127 (3) | |
Text
WITHHOLD FROM PUBLIC DISCLOSURE UNDER 10 CFR 2.390.
ENCLOSURE 1 CONTAINS SECURITY-RELATED INFORMATION.
UPON REMOVAL OF ENCLOSURE 1, THIS LETTER AND ENCLOSURE 2 ARE DECONTROLLED.
Omaha PublicPowerOistici 444 South le Street Mall Omaha, NE 68102-2247 10 CFR 50.54(f)
LIC-15-0015 February 4, 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
Subject:
Response to Request for Information Regarding Flooding Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident- Fort Calhoun Station Flood Hazard Reevaluation Report
References:
See Page 3 On March 12, 2012, the Nuclear Regulatory Commission (NRC) issued a request for information (Reference 1) pursuant to 10 CFR 50.54(f) that required licensees to provide information to support the evaluation of NRC staff recommendations for the Near-Term Task Force (NTTF) review of the accident at the Fukushima Dai-ichi nuclear facility. Recommendation 2.1: Flooding of the letter included a request for licensees under 10 CFR Part 50 to reevaluate the flood hazards at their sites against present-day regulatory guidance and methodologies being used for Early Site Permit (ESP) and Combined License reviews. The requested flood hazard reevaluation report (FHRR) for Fort Calhoun Station (FCS), Unit 1 is provided in Enclosure 1. contains security-related information and OPPD requests that it be withheld from public disclosure in accordance with 10 CFR 2.390. Enclosure 2 is a redacted version of the FHRR and is suitable for public disclosure.
Background
On May 11, 2012, the NRC issued a prioritization plan (Reference 2) that established an external flooding hazard reevaluation schedule for each licensee. The NRC's prioritization plan initially placed FCS in Category 2, establishing a flood hazard reevaluation due date of March 12, 2014.
However, as described in OPPD's letter dated February 26, 2014 (Reference 3), a System Dam Failure Analysis at the time still in development by the U. S. Army Corps of Engineers (USACE) was necessary for OPPD to complete the FCS FHRR. Thus, OPPD requested 10 months from WITHHOLD FROM PUBLIC DISCLOSURE UNDER 10 CFR 2.390. .P(4 ENCLOSURE 1 CONTAINS SECURITY-RELATED INFORMATION.
UPON REMOVAL OF ENCLOSURE 1, THIS LETTER AND ENCLOSURE 2 ARE DECONTROLLED.
WITHHOLD FROM PUBLIC DISCLOSURE UNDER 10 CFR 2.390.
ENCLOSURE 1 CONTAINS SECURITY-RELATED INFORMATION.
UPON REMOVAL OF ENCLOSURE 1, THIS LETTER AND ENCLOSURE 2 ARE DECONTROLLED.
receipt of the USACE data to incorporate its results and finalize the FHRR. By letter dated July 17, 2014 (Reference 4), the NRC revised the original due date and required OPPD to submit the FHRR by February 4, 2015. , Table 3.14-1 contains a comparison of current licensing basis (CLB) flood hazards and reevaluated flood hazards at FCS. The reevaluated flood hazards are not bounded by the CLB for the following considerations:
- Flooding in streams and rivers when combined with the effects of wind setup and wave runup result in maximum flood water level values that are higher than the CLB flood elevation reported in the USAR.
- Flooding due to dam breaches and failures result in maximum flood water level values that are higher than the CLB flood elevation reported in the USAR.
Section 4.3 of Enclosures 1 and 2 discusses the interim evaluation and actions taken or planned to address the reevaluated flood hazards at FCS.
In accordance with the guidance provided in Reference 5, an integrated assessment is required if flood levels determined during the flood hazard reevaluation are not bounded by the CLB flood levels. Reference 1 requires that the integrated assessment be completed and a report submitted within two years of submitting the FHRR. Therefore, OPPD will submit an Integrated Assessment Report for FCS within two years of the date of this letter (AR 51963-12); no other regulatory commitments are contained in this letter.
I declare under penalty of perjury that the foregoing is true and correct. Executed on February 4, 2015.
Respectfly Louis P. Cortopassi Site Vice President and CNO LPC/JKG/mle
Enclosures:
- 2. CDCOM No. 2 containing FCS FHRR, SL-012448, Revision 0 (Redacted) c: W. M. Dean, Director of Office of Nuclear Reactor Regulation (w/o Enclosures 1 and 2)
M. L. Dapas, NRC Regional Administrator, Region IV (w/o Enclosures 1 and 2)
C. F. Lyon, NRC Senior Project Manager S. M. Schneider, NRC Senior Resident Inspector (w/o Enclosures 1 and 2)
WITHHOLD FROM PUBLIC DISCLOSURE UNDER 10 CFR 2.390.
ENCLOSURE 1 CONTAINS SECURITY-RELATED INFORMATION.
UPON REMOVAL OF ENCLOSURE 1, THIS LETTER AND ENCLOSURE 2 ARE DECONTROLLED.
LIC-1 5-0015 Page 1 References
- 1. NRC letter, Request for Information Pursuantto Title 10 of the Code of FederalRegulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident, dated March 12, 2012 (ML12053A340)
- 2. NRC letter, Prioritizationof Response Due Dates for Request for Information Pursuantto Title 10 of the Code of Federal Regulations 50.54(f) Regarding Flooding Hazard Reevaluations for Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichiAccident, dated May 11, 2012 (ML12097A509) (NRC-12-0048)
- 3. Letter from OPPD (L. P. Cortopassi) to NRC (Document Control Desk), Extension Request -
Response to March 12, 2012, Request for Information Enclosure 2, Recommendation 2. 1, Flooding, Required Response 2, Flooding Hazard Reevaluation Report, dated February 26, 2014, (ML14058A225) (LIC-14-0010)
- 4. Letter from NRC (D. H. Dorman) to OPPD (L. P. Cortopassi) Fort Calhoun Station, Unit 1 -
Relaxation of Response Due Dates Regarding Flooding Hazard Reevaluations for Recommendation 2.1 of the Near-term Task Force Review of the Insights from the Fukushima Dai-ichiAccident, dated July 17, 2014 (ML14169A267) (NRC-1 4-0092)
- 5. Letter from NRC (D. L. Skeen) to NEI (J. E. Pollock), Trigger Conditions for Performing an Integrated Assessment and Due Date for Response, dated December 3, 2012 (ML12326A912)