ML13232A273
| ML13232A273 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 07/26/2013 |
| From: | Addison H, Peterson K Omaha World-Herald, State of NE |
| To: | Plant Licensing Branch IV |
| References | |
| Download: ML13232A273 (1) | |
Text
NRC STAFF PROPOSES TO AMEND RENEWED FACILITY OPERATING LICENSE AT THE FORT CALHOUN STATION, UNIT 1 The U.S. Nuclear Regulatory Commission (NRC) staff has received an application dated July 21.2013, from Omaha Public Pow-er District (OPPD, te licensee). for an exigent amendment to the renewed operating license for the Fort Calhoun Station.
Unit 1, located in Washington County, Nebraska.
The proposed amendment would revise the Updated Safety Analysis Report (USAR) for the design-basIs tornado (DUT) and tornado missiles to include Regulatory Guide (RG) 1.76, Revision 1."Desion-Oasis Tornado and Tornado Missiles for Nuclear Power Plants." and Bechtel Power Corporation, Topical Report RC-TOP'JA-Revision 2, September 1974, "Design of Structures for Missile Impact." As described In the lcense amendment application, he changes will revise the current llcensn sis (CL)pta inng to protection from tornadoes and tornado-generated missiles. Section C of RG 1.76. Revision I lished the regulatory position for icensees to use In selecting the DRT and DOTgenerated missiles that a nuclear power ant should be designed to withstand to prevent undue risk to public health and safety. BC-TOP-gA. Revision ipjrnvides a methca-oiny approved by the Atomic Energy Commission (AEC) for evaluating the impact of tornado missiles. With these changes, theilcensee ensures that theplant can reacb sale shutdown and be maintained in a safe shutdown condition during a torna-dolt accordance with Appendix G, Criterion 2, of the USAR.
In Its July 21 2013 license amendment applcation, OPPD described installing physical protection against tornadoes for cer-tain equipment During equipment Installation and associated reviews of the existing licensing basis and discussions with the NRC staff, OPPO determined that it needed to request the amendment described above. OPPD explained that It did not submit the amendment sooner because it had not previously concluded that prior NRC approval was required. OPPD noted that these changes must be obtained to support plant startup and that due to the comrplex and Integrated nature of the ac-tivities required to recover from an extended outage, an entended delay In a key activity would have a cascading, adverse impact on the resumption of operations. Therefore. OPPD *r~uested that the license amendment request b~e rocessed un-*
der esigent circumstances In accordance with paragraph 50.1(a)t6) of Title 10 of the Code of Federal Regultions (10 CFR).
An "exigent" amendment reduces the time the public and State have to comment on the associated issue of "no significant hazards consideration" and allows for notice to be provided through local media (e.g., a newspaper) instead of through the Federal Register, 10 CFR SO.w1(a)(6)(l)?r).
The Commission's regulation at 10 CFR 50.gtta)(t) requires that, at the time a licensee requests an amendment, the licensee must provide to the C;ommission the lcensee's analysis about the issue of no significant hazards consideration using the standards In § 50.92, whIch concern whether the proposed amendment (1) involves a significant Increase in the probability or consequences of an accident poreviously evaluated: or (2) creates the possibility of a new or different kind of accidennt from any accident previously evaluated: or (2) involves a significant reduction In a margin of safety.
Accordingly, the licensee provided the folowing nformation 17 Does the prpo*Hsed amnendment involve a significant increase in the probabilIty or consequences of an accident I resously evaluated?
Response
hO Tbe proposed change to the current licensing basis (CLO) utilizes current NRC guidance (i e., Regulator Guide tRG) 1.76 Revl' slon 1), regarcl. n al characteristics of the design basis tornado (DOiT) and associated misslies and NRC-approved methtodol-ogy (e enteToplcol Report BC'TOP'RA Rev sion 2) for the analysis thereff. These NRC-aiproved documents will form the basis for ensuring that recently Identifed tornado missie targeta are adequately protected.
The proposed change does not increase the probabili.ty or consequences of an accident previously evaluated. The p ropLosed change Is mere comprehensive than the CLB as it will require, consideration of the vertical velocity component of DOT mis-sils, and use an approved methodology OC-TOP-9A for analyzing tornado missile Impact. This will provide a basis for analyz-ing and protect ng designated SSCs [structures, systems, and components] using protective barriers to enable the plant to reach sate shutdown and be maintained Inna sale shutdown condition during a tornado.
Therefore.theproposed change does not involve a significant increase in the probability or consequences of an accident pre-
- 2. Does the proposed amendment create the possibility of a new or different kind of accident from any accident I~evously evaluated?
The-proposed amend meet provides the regulatory basis for changing the CLB to reguire corepliance with RG 1.76a Revision I for the DOT and associated missiles, and use an upproved methodo oyBC-TOP-RA for analyzing tornado missile impact. The proposed amendment does not involve a change In methods governing plant operation. The proposed amendment requires consideration of the vertical velocity component of DOT missiles not presently required by the CLO. Designated SSCs are pro-tected by barriers against the RD 1.76. Revision 1 DOT and associated missiles to ensure the plant can reach safe shutdown and be maintained In a safe shutdown condition during a tornado.
No new Interactions between systems or components are created. No new failure mechanisms of associated systems will ex-1st-The proposed amendment ensures that designated SSCS ame protected from the effects of the DOT and associated mis-siles in avow-dan/ce with current NRC guidance.
Therefore, the amendment does not create the possibility of a new or different bind of accident from any previously evaluated.
- 3. Does the proposed amendment involve a significant reduction inna margin of safety?
Respofso No.
The proposed amendment provides the regulatory basis for c
hanging the CLO to utilize updated NRC guidance regarding the characteristics of the DOT and associated missiles Designoted are rotected In accordance wNth the most recent NRC guidance and opproved methodologies as documented above regarding the characteristics of the. DOT and DOT missiles and how to(analyze Teilr Impact on structures, systems and coponents. the reoposed amendment does not alter the manner In whIch sofety limits or limiting safety system settings ame determined. The safety analysis acceptance criteria are not af-fected by the proposed amendment. Further, the proposed amendment does not change the design function of any eouip-ment assumed to Operate in the event of an accidento The proposed change provides a basis fur protecting designated Cs in accordance with current NRC-guidance and approved methodologies to enable the plant to reach safe shutdown and be maintained in a safe shutdown condition during a tornado.
Therefore, the proposed amendment does not involve a significant reduction le a margin of safety.
Following tbe NRC Staff's Initial review of this license amendment application, the requested amendment has been evaluated against the standards in § 50.92 and the NRC Staff has made a proposed (preliminary) determination that the requested amendment Involves no significant hazards considerations, The chianges do nut significantly Increase the probabililty or con-seouecs of any arldent previously considered, nor create the possibility of an accident of a different kind, nor significant-ly decrease any margin of safety. The staff noutes that the analyzed accidents can be found in Chapter 14 of the Fort Calhoun teflon USARC if the proposed determination that the requested license amendment involves no significant bazards consideration becomes final the stuff will issue the amendment without first offering an Opportunity for a public hearing. An opportunity for a hear-rng wibe iublshed in the Federal Register a n later date and any hearing request will not delay the effective date 01 the Iamndmen rve d
aad If the staff decides in its final determination that the amendment does involve a significant hazards consideration, a notice of opportunity fur a prior hearing will be published in the Federal Register and, if a hearing is granted, It will be held before the amendment s ssued.
Comments on the proposed determination of no significant hazards consideration ma be (1) telephoned to Joseah M.
tebrosky, Senio prolect M qgr, Plant Licensing Oranch IV ~by collect call to 301 415-1132, or by facsireile to 201-45?1S-188, (2) v-mailed to o hseofsfrosk re. ~gv (a) submitted in writng to the Chief, Rules, AnnOuncements and Directives Oranch, Division of1Adm C ntroive Sevce5, Oice of Administration, U.S. Nuclear Regulatory Commission. Washington, DC 20555-0001.All commntsreceivedbycloseofbusnessonJuly25,2013 from 7-0 nm.to4:15p.m. Federal workdays wil be consid-ered In reaching a final determination. A copy of the application dated July 21. 2013, maybe eoamined electronically through the NRC's Agencywide Documents Access and Icanagement System (ADAMS) at Accession NO. ML13203A126 in the NRC U-Sraryat httand.
- c. ovmoesdan-rmadase.
tm rand at the Commission's Public Document Room aPDR) located at One white FlPlo t North Public File Area 15 Rockville Pike (first floor), Rockpille Maryland. Persons who do not have ac-tess to ADAMS or who encounter problems In accessing the d oc ated in AsAMS should contact the NRC PDR Refer-ence staff by telephone at 1 o000397420, or 30d 410 4737, orby e mall to rresouro nrc.ov.
Proof of publication AFFIDAVIT State of Nebraska, County of Douglas, ss:
Kiley Petersen, being duly sworn, deposes and says that he/she is an employee of The Omaha World-Herald, a legal daily newspaper printed and published in the county of Douglas and State of Nebraska, and of general circulation in the Counties of Douglas, and Sarpy and State of Nebraska, and that the attached printed notice was published two times in the said newspaper the first insertion having been on July 24, 2013 and thereafter on July 25, 2013, and that said newspaper is a legal newspaper under the statutes of the State of Nebraska. The above facts are within my personal knowledge. The Omaha World-Herald has an average circulation of 136,645 Daily and 170,486 Sunday, in 2013.
(Signed)
Title:
Account Executive Subscribed in my presence and sworn to before me this day of
. 2013.
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Affidavit Paid By