82_FR_29468 82 FR 29345 - Exelon Generation Company, LLC; R.E. Ginna Nuclear Power Plant; Use of Optimized ZIRLOTM

82 FR 29345 - Exelon Generation Company, LLC; R.E. Ginna Nuclear Power Plant; Use of Optimized ZIRLOTM

NUCLEAR REGULATORY COMMISSION

Federal Register Volume 82, Issue 123 (June 28, 2017)

Page Range29345-29347
FR Document2017-13517

The U.S. Nuclear Regulatory Commission (NRC) is issuing an exemption in response to an August 22, 2016, request from Exelon Generation Company, LLC (Exelon) in order to use Optimized ZIRLO<SUP>TM</SUP> Fuel Rod Cladding at the R.E. Ginna Nuclear Power Plant (Ginna).

Federal Register, Volume 82 Issue 123 (Wednesday, June 28, 2017)
[Federal Register Volume 82, Number 123 (Wednesday, June 28, 2017)]
[Notices]
[Pages 29345-29347]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-13517]


-----------------------------------------------------------------------

NUCLEAR REGULATORY COMMISSION

[Docket No. 50-244; NRC-2017-0124]


Exelon Generation Company, LLC; R.E. Ginna Nuclear Power Plant; 
Use of Optimized ZIRLOTM Fuel Rod Cladding

AGENCY: Nuclear Regulatory Commission.

ACTION: Exemption; issuance.

-----------------------------------------------------------------------

SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing an 
exemption in response to an August 22, 2016, request from Exelon 
Generation Company, LLC (Exelon) in order to use Optimized 
ZIRLOTM Fuel Rod Cladding at the R.E. Ginna Nuclear Power 
Plant (Ginna).

DATES: The exemption was issued on June 19, 2017.

ADDRESSES: Please refer to Docket ID NRC-2017-0124 when contacting the 
NRC about the availability of information regarding this document. You 
may obtain publicly-available information related to this document 
using any of the following methods:
     Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2017-0124. Address 
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: [email protected]. For technical questions, contact 
the individual listed in the FOR FURTHER INFORMATION CONTACT section of 
this document.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may obtain publicly-available documents online in the 
ADAMS Public Documents collection at http://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``ADAMS Public Documents'' and 
then select ``Begin Web-based ADAMS Search.'' For problems with ADAMS, 
please contact the NRC's Public Document Room (PDR) reference staff at 
1-800-397-4209, 301-415-4737, or by email to [email protected]. The 
ADAMS accession number for each document referenced (if it is available 
in ADAMS) is provided the first time that it is mentioned in this 
document.
     NRC's PDR: You may examine and purchase copies of public 
documents at the NRC's PDR, Room O1-F21, One White Flint North, 11555 
Rockville Pike, Rockville, Maryland 20852.

FOR FURTHER INFORMATION CONTACT: V. Sreenivas, Office of Nuclear 
Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington DC 
20555-0001; telephone: 301-415-2597, email: [email protected].

SUPPLEMENTARY INFORMATION: 

I. Background

    Exelon Generation Company, LLC is the holder of Renewed Facility 
Operating License No. DPR-18, which authorizes operation of Ginna, a 
pressurized-water reactor. The license provides, among other things, 
that the facility is subject to all rules, regulations, and orders of 
the NRC now or hereafter in effect. The facility is located in Ontario, 
New York, approximately 20 miles northeast of Rochester, New York.

II. Request/Action

    Pursuant to Sec.  50.12 of title 10 of the Code of Federal 
Regulations (10 CFR), ``Specific exemptions,'' the licensee requested, 
by letter dated August 22, 2016 (ADAMS Accession No. ML16236A300), an 
exemption from Sec.  50.46, ``Acceptance criteria for emergency core 
cooling systems [ECCS] for light-water nuclear power reactors,'' and 10 
CFR part 50, appendix K, ``ECCS Evaluation Models,'' to allow the use 
of Optimized ZIRLOTM fuel rod cladding. The regulations in 
Sec.  50.46 contain acceptance criteria for the ECCS for reactors 
fueled with zircaloy or ZIRLOTM fuel rod cladding material. 
In addition, 10 CFR part 50, appendix K, requires that the Baker-Just 
equation be used to predict the rates of energy release, hydrogen 
concentration, and cladding oxidation from the metal/water reaction. 
The Baker-Just equation assumes the use of a zirconium alloy different 
than Optimized ZIRLOTM material. Therefore, an exemption to 
Sec.  50.46 and 10 CFR part 50, appendix K is required to support the 
use of Optimized ZIRLOTM fuel rod cladding at Ginna.
    The exemption request relates solely to the specific types of 
cladding material specified in these regulations (i.e., fuel rods with 
Zircaloy or ZIRLO[supreg] cladding). This request will provide for the 
application of the acceptance criteria of Sec.  50.46 and appendix K to 
10 CFR part 50 to fuel assembly designs utilizing Optimized 
ZIRLOTM fuel rod cladding. The NRC staff prepared a separate 
safety evaluation fully addressing Exelon's application for a related 
license amendment.

III. Discussion

    Pursuant to Sec.  50.12, the Commission may, upon application by 
any interested person or upon its own initiative, grant exemptions from 
the requirements of 10 CFR part 50 when: (1) The exemptions are 
authorized by law, will not present an undue risk to public health or 
safety, and are consistent with the common

[[Page 29346]]

defense and security; and (2) when special circumstances are present. 
Under Sec.  50.12(a)(2), special circumstances include, among other 
things, when application of the specific regulation in the particular 
circumstance would not serve, or is not necessary to achieve, the 
underlying purpose of the rule.

A. Authorized by Law

    The exemption would allow the use of Optimized ZIRLOTM 
fuel rod cladding material at Ginna. As stated above, Sec.  50.12 
allows the NRC to grant exemptions from the requirements of 10 CFR part 
50. The NRC staff has determined that granting the licensee's requested 
exemption would not result in a violation of the Atomic Energy Act of 
1954, as amended, or the Commission's regulations. Therefore, the 
exemption is authorized by law.

B. No Undue Risk to Public Health and Safety

    The underlying purpose of Sec.  50.46 is to establish acceptance 
criteria for adequate ECCS performance. By letter dated June 10, 2005, 
the NRC staff issued a safety evaluation (ADAMS Accession No 
ML051670408) approving Addendum 1 to Westinghouse Topical Report WCAP-
12610-P-A and CENPD-404-P-A, ``Optimized ZIRLOTM'' (these 
topical reports are not publicly available because they contain 
proprietary information), wherein the NRC staff approved the use of 
Optimized ZIRLOTM as a fuel cladding material. The NRC staff 
approved the use of Optimized ZIRLOTM as a fuel cladding 
material based on: (1) Similarities with standard ZIRLOTM, 
(2) demonstrated material performance, and (3) a commitment to provide 
irradiated data and validate fuel performance models ahead of burnups 
achieved in batch application. The NRC staff's safety evaluation for 
Optimized ZIRLOTM includes ten conditions and limitations 
for its use. As previously documented in the NRC staff's review of 
topical reports submitted by Westinghouse Electric Company, LLC 
(Westinghouse), and subject to compliance with the specific conditions 
of approval established therein, the NRC staff finds that the 
applicability of these ECCS acceptance criteria to Optimized 
ZIRLOTM has been demonstrated by Westinghouse. Ring 
compression tests performed by Westinghouse on Optimized 
ZIRLOTM (NRC-reviewed, approved, and documented in Appendix 
B of WCAP-12610-P-A and CENPD-404-P-A, Addendum 1-A, ``Optimized 
ZIRLOTM'') demonstrate an acceptable retention of post-
quench ductility up to Sec.  50.46 limits of 2,200 degrees Fahrenheit 
and 17 percent equivalent clad reacted. Furthermore, the NRC staff has 
concluded that oxidation measurements provided by the licensee 
illustrate that oxide thickness (and associated hydrogen pickup) for 
Optimized ZIRLOTM at any given burnup would be less than 
both zircaloy-4 and ZIRLOTM. Hence, the NRC staff concludes 
that Optimized ZIRLOTM would be expected to maintain better 
post-quench ductility than ZIRLOTM. This finding is further 
supported by an ongoing loss-of-coolant accident research program at 
Argonne National Laboratory, which has identified a strong correlation 
between cladding hydrogen content (due to in-service corrosion) and 
post-quench ductility.
    The underlying purpose of 10 CFR part 50, appendix K, section 
I.A.5, ``Metal-Water Reaction Rate,'' is to ensure that cladding 
oxidation and hydrogen generation are appropriately limited during a 
loss-of-coolant accident and conservatively accounted for in the ECCS 
evaluation model. Appendix K states that the rates of energy release, 
hydrogen concentration, and cladding oxidation from the metal-water 
reaction shall be calculated using the Baker-Just equation. Since the 
Baker-Just equation presumes the use of zircaloy clad fuel, strict 
application of the rule would not permit use of the equation for 
Optimized ZIRLOTM cladding for determining acceptable fuel 
performance. However, the NRC staff has found that metal-water reaction 
tests performed by Westinghouse on Optimized ZIRLOTM 
demonstrate conservative reaction rates relative to the Baker-Just 
equation and are bounding for those approved for ZIRLO\TM\ under 
anticipated operational occurrences and postulated accidents.
    Based on the above, no new accident precursors are created by using 
Optimized ZIRLOTM; thus, the probability of postulated 
accidents is not increased. Also, based on the above, the consequences 
of postulated accidents are not increased. Therefore, there is no undue 
risk to public health and safety due to using Optimized 
ZIRLOTM.

C. Consistent With the Common Defense and Security

    The proposed exemption would allow the use of Optimized 
ZIRLOTM fuel rod cladding material at Ginna. This change to 
the plant configuration has no relation to security issues. Therefore, 
the common defense and security is not impacted by this exemption.

D. Special Circumstances

    Special circumstances, in accordance with Sec.  50.12(a)(2)(ii), 
are present whenever application of the regulation in the particular 
circumstances is not necessary to achieve the underlying purpose of the 
rule. The underlying purpose of Sec.  50.46 and appendix K to 10 CFR 
part 50 is to establish acceptance criteria for ECCS performance. The 
wording of the regulations in Sec.  50.46 and appendix K is not 
directly applicable to Optimized ZIRLOTM, even though the 
evaluations above show that the intent of the regulation is met. 
Therefore, since the underlying purposes of Sec.  50.46 and appendix K 
are achieved through the use of Optimized ZIRLOTM fuel rod 
cladding material, the special circumstances required by Sec.  
50.12(a)(2)(ii) for the granting of an exemption from certain 
requirements of Sec.  50.46 and appendix K exist.

E. Environmental Considerations

    The NRC staff determined that the exemption discussed herein meets 
the eligibility criteria for the categorical exclusion set forth in 
Sec.  51.22(c)(9) because it is related to a requirement concerning the 
installation or use of a facility component located within the 
restricted area, as defined in 10 CFR part 20, and the granting of this 
exemption involves: (1) No significant hazards consideration, (2) no 
significant change in the types or a significant increase in the 
amounts of any effluents that may be released offsite, and (3) no 
significant increase in individual or cumulative occupational radiation 
exposure. Therefore, in accordance with Sec.  51.22(b), no 
environmental impact statement or environmental assessment need to be 
prepared in connection with the NRC's consideration of this exemption 
request. The basis for the NRC staff's determination is discussed as 
follows with an evaluation against each of the requirements in Sec.  
51.22(c)(9).
Requirements in Sec.  51.22(c)(9)(i)
    The NRC staff evaluated the issue of no significant hazards 
consideration, using the standards described in Sec.  50.92(c), as 
presented below:
    1. Does the proposed exemption involve a significant increase in 
the probability or consequences of an accident previously evaluated?
    Response: No.
    The proposed change would allow the use of Optimized 
ZIRLOTM clad nuclear fuel in the reactors. The NRC-approved 
topical report WCAP-12610-P-A & CENPD-404-P-A, Addendum 1-A, 
``Optimized ZIRLOTM,'' prepared by

[[Page 29347]]

Westinghouse Electric Company, LLC (Westinghouse), addresses Optimized 
ZIRLOTM and demonstrates that Optimized ZIRLOTM 
has essentially the same properties as currently licensed 
ZIRLO[supreg]. The fuel cladding itself is not an accident initiator 
and does not affect accident probability.
    2. Does the proposed exemption create the possibility of a new or 
different kind of accident from any accident previously evaluated?
    Response: No.
    Use of Optimized ZIRLOTM clad fuel will not result in 
changes in the operation or configuration of the facility. Topical 
Report WCAP-12610-P-A & CENPD-404-P-A, Addendum 1-A, demonstrated that 
the material properties of Optimized ZIRLOTM are similar to 
those of standard ZIRLO[supreg], thus precluding the possibility of the 
fuel cladding becoming an accident initiator and causing a new or 
different type of accident. Therefore, the proposed change does not 
create the possibility of a new or different kind of accident from any 
previously evaluated.
    3. Does the proposed exemption involve a significant reduction in a 
margin of safety?
    Response: No.
    The proposed change will not involve a significant reduction in the 
margin of safety. Topical Report WCAP-12610-P-A & CENPD-404-P-A, 
Addendum 1-A, demonstrated that the material properties of the 
Optimized ZIRLOTM are not significantly different from those 
of standard ZIRLO[supreg]. Optimized ZIRLOTM is expected to 
perform similarly to standard ZIRLO[supreg] for all normal operating 
and accident scenarios, including both loss of coolant accident LOCA) 
and non-LOCA scenarios. For LOCA scenarios, where the slight difference 
is Optimized ZIRLOTM material properties relative to 
standard ZIRLO[supreg] could have some impact on the overall accident 
scenario, plant-specific LOCA analyses using Optimized 
ZIRLOTM properties will demonstrate that the acceptance 
criteria of 10 CFR 50.46 have been satisfied. Therefore, the proposed 
change does not involve a significant reduction in a margin of safety.
    Based on the above, the NRC staff concludes that the proposed 
exemption presents no significant hazards consideration under the 
standards set forth in Sec.  50.92(c), and, accordingly, a finding of 
no significant hazards consideration is justified (i.e., satisfies the 
provisions of Sec.  51.22(c)(9)(i)).
Requirements in Sec.  51.22(c)(9)(ii)
    The proposed exemption would allow the use of Optimized 
ZIRLOTM fuel rod cladding material at Ginna. Optimized 
ZIRLOTM has essentially the same properties are currently 
licensed ZIRLO[supreg]. The use of Optimized ZIRLOTM fuel 
rod cladding material will not significantly change the types of 
effluents that may be released offsite or significantly increase the 
amount of effluents that may be released offsite. Therefore, the 
provisions of Sec.  51.22(c)(9)(ii) are satisfied.
Requirements in Sec.  51.22(c)(9)(iii)
    The proposed exemption would allow the use of Optimized 
ZIRLOTM fuel rod cladding material at Ginna. Optimized 
ZIRLOTM has essentially the same properties are currently 
licensed ZIRLO[supreg]. The use of Optimized ZIRLOTM fuel 
rod cladding material at Ginna will not significantly increase 
individual occupational radiation exposure or significantly increase 
cumulative occupational radiation exposure. Therefore, the provisions 
of Sec.  51.22(c)(9)(iii) are satisfied.
Conclusion
    Based on the above, the NRC staff concludes that the proposed 
exemption meets the eligibility criteria for the categorical exclusion 
set forth in Sec.  51.22(c)(9). Therefore, in accordance with Sec.  
51.22(b), no environmental impact statement or environmental assessment 
need to be prepared in connection with the NRC's proposed issuance of 
this exemption.

IV. Conclusion

    Accordingly, the Commission has determined that, pursuant to Sec.  
50.12, the exemption is authorized by law, will not present an undue 
risk to the public health and safety, and is consistent with the common 
defense and security. Also, special circumstances are present. 
Therefore, the Commission hereby grants Exelon an exemption from 
certain requirements of Sec.  50.46 and 10 CFR part 50, appendix K, to 
allow the use of Optimized ZIRLOTM fuel rod cladding 
material at Ginna.

    Dated at Rockville, Maryland, this 19th day of June 2017.

    For the Nuclear Regulatory Commission.
MaryJane Ross-Lee,
Acting Director, Division of Operating Reactor Licensing, Office of 
Nuclear Reactor Regulation.
[FR Doc. 2017-13517 Filed 6-27-17; 8:45 am]
 BILLING CODE 7590-01-P



                                                                                 Federal Register / Vol. 82, No. 123 / Wednesday, June 28, 2017 / Notices                                            29345

                                                    ADAMS Public Documents collection at                    NUCLEAR REGULATORY                                     SUPPLEMENTARY INFORMATION:
                                                    http://www.nrc.gov/reading-rm/                          COMMISSION                                             I. Background
                                                    adams.html. To begin the search, select
                                                                                                            [Docket No. 50–244; NRC–2017–0124]                        Exelon Generation Company, LLC is
                                                    ‘‘ADAMS Public Documents’’ and then
                                                    select ‘‘Begin Web-based ADAMS                                                                                 the holder of Renewed Facility
                                                                                                            Exelon Generation Company, LLC;                        Operating License No. DPR–18, which
                                                    Search.’’ For problems with ADAMS,                      R.E. Ginna Nuclear Power Plant; Use of                 authorizes operation of Ginna, a
                                                    please contact the NRC’s Public                         Optimized ZIRLOTM Fuel Rod Cladding                    pressurized-water reactor. The license
                                                    Document Room (PDR) reference staff at
                                                                                                            AGENCY:  Nuclear Regulatory                            provides, among other things, that the
                                                    1–800–397–4209, 301–415–4737, or by                                                                            facility is subject to all rules,
                                                    email to pdr.resource@nrc.gov. The                      Commission.
                                                                                                            ACTION: Exemption; issuance.                           regulations, and orders of the NRC now
                                                    license renewal application for RBS is                                                                         or hereafter in effect. The facility is
                                                    available in ADAMS under Package                        SUMMARY:   The U.S. Nuclear Regulatory                 located in Ontario, New York,
                                                    Accession No. ML17153A282.                              Commission (NRC) is issuing an                         approximately 20 miles northeast of
                                                       • NRC’s PDR: You may examine and                     exemption in response to an August 22,                 Rochester, New York.
                                                    purchase copies of public documents at                  2016, request from Exelon Generation                   II. Request/Action
                                                    the NRC’s PDR, Room O1–F21, One                         Company, LLC (Exelon) in order to use
                                                    White Flint North, 11555 Rockville                      Optimized ZIRLOTM Fuel Rod Cladding                       Pursuant to § 50.12 of title 10 of the
                                                                                                            at the R.E. Ginna Nuclear Power Plant                  Code of Federal Regulations (10 CFR),
                                                    Pike, Rockville, Maryland 20852.
                                                                                                            (Ginna).                                               ‘‘Specific exemptions,’’ the licensee
                                                    FOR FURTHER INFORMATION CONTACT:                                                                               requested, by letter dated August 22,
                                                                                                            DATES: The exemption was issued on
                                                    Emmanuel Sayoc, Office of Nuclear                                                                              2016 (ADAMS Accession No.
                                                                                                            June 19, 2017.
                                                    Reactor Regulation, U.S. Nuclear                                                                               ML16236A300), an exemption from
                                                                                                            ADDRESSES: Please refer to Docket ID                   § 50.46, ‘‘Acceptance criteria for
                                                    Regulatory Commission, Washington,
                                                                                                            NRC–2017–0124 when contacting the                      emergency core cooling systems [ECCS]
                                                    DC 20555–0001; telephone: 301–415–
                                                                                                            NRC about the availability of                          for light-water nuclear power reactors,’’
                                                    4084; email: Emmanuel.Sayoc@nrc.gov.                    information regarding this document.                   and 10 CFR part 50, appendix K, ‘‘ECCS
                                                    SUPPLEMENTARY INFORMATION:      The NRC                 You may obtain publicly-available                      Evaluation Models,’’ to allow the use of
                                                    has received an application from                        information related to this document                   Optimized ZIRLOTM fuel rod cladding.
                                                    Entergy Operations, Inc., dated May 25,                 using any of the following methods:                    The regulations in § 50.46 contain
                                                    2017, filed pursuant to Section 103 of                     • Federal Rulemaking Web site: Go to                acceptance criteria for the ECCS for
                                                    the Atomic Energy Act of 1954, as                       http://www.regulations.gov and search                  reactors fueled with zircaloy or
                                                    amended, and part 54 of title 10 of the                 for Docket ID NRC–2017–0124. Address                   ZIRLOTM fuel rod cladding material. In
                                                    Code of Federal Regulations, to renew                   questions about NRC dockets to Carol                   addition, 10 CFR part 50, appendix K,
                                                    the operating license for RBS. Renewal                  Gallagher; telephone: 301–415–3463;                    requires that the Baker-Just equation be
                                                    of the license would authorize the                      email: Carol.Gallagher@nrc.gov. For                    used to predict the rates of energy
                                                                                                            technical questions, contact the                       release, hydrogen concentration, and
                                                    applicant to operate the facility for an
                                                                                                            individual listed in the FOR FURTHER                   cladding oxidation from the metal/water
                                                    additional 20-year period beyond the
                                                                                                            INFORMATION CONTACT section of this
                                                    period specified in the current operating                                                                      reaction. The Baker-Just equation
                                                                                                            document.                                              assumes the use of a zirconium alloy
                                                    license. The current operating license                     • NRC’s Agencywide Documents
                                                    for RBS expires at midnight on August                                                                          different than Optimized ZIRLOTM
                                                                                                            Access and Management System                           material. Therefore, an exemption to
                                                    29, 2025. River Bend Station, Unit 1, is                (ADAMS): You may obtain publicly-
                                                    a boiling water reactor designed by                                                                            § 50.46 and 10 CFR part 50, appendix K
                                                                                                            available documents online in the                      is required to support the use of
                                                    General Electric and is located in St.                  ADAMS Public Documents collection at
                                                    Francisville, Louisiana. The                                                                                   Optimized ZIRLOTM fuel rod cladding at
                                                                                                            http://www.nrc.gov/reading-rm/                         Ginna.
                                                    acceptability of the tendered application               adams.html. To begin the search, select                   The exemption request relates solely
                                                    for docketing, and other matters,                       ‘‘ADAMS Public Documents’’ and then                    to the specific types of cladding material
                                                    including an opportunity to request a                   select ‘‘Begin Web-based ADAMS                         specified in these regulations (i.e., fuel
                                                    hearing, will be the subject of                         Search.’’ For problems with ADAMS,                     rods with Zircaloy or ZIRLO® cladding).
                                                    subsequent Federal Register notices.                    please contact the NRC’s Public                        This request will provide for the
                                                       A copy of the license renewal                        Document Room (PDR) reference staff at                 application of the acceptance criteria of
                                                    application for the RBS, is also available              1–800–397–4209, 301–415–4737, or by                    § 50.46 and appendix K to 10 CFR part
                                                    to local residents near the site at the                 email to pdr.resource@nrc.gov. The                     50 to fuel assembly designs utilizing
                                                                                                            ADAMS accession number for each                        Optimized ZIRLOTM fuel rod cladding.
                                                    West Feliciana Parish Library at 5114
                                                                                                            document referenced (if it is available in             The NRC staff prepared a separate safety
                                                    Burnett Rd., St. Francisville, LA 70775.
                                                                                                            ADAMS) is provided the first time that                 evaluation fully addressing Exelon’s
                                                       Dated at Rockville, Maryland, this 19th day          it is mentioned in this document.                      application for a related license
                                                    of June, 2017.                                             • NRC’s PDR: You may examine and                    amendment.
                                                       For the Nuclear Regulatory Commission.               purchase copies of public documents at
                                                                                                            the NRC’s PDR, Room O1–F21, One                        III. Discussion
asabaliauskas on DSKBBXCHB2PROD with NOTICES




                                                    Sheldon Stuchell,
                                                    Chief, Projects Management and Guidance
                                                                                                            White Flint North, 11555 Rockville                        Pursuant to § 50.12, the Commission
                                                    Branch, Division of License Renewal, Office             Pike, Rockville, Maryland 20852.                       may, upon application by any interested
                                                    of Nuclear Reactor Regulation.                          FOR FURTHER INFORMATION CONTACT: V.                    person or upon its own initiative, grant
                                                    [FR Doc. 2017–13518 Filed 6–27–17; 8:45 am]             Sreenivas, Office of Nuclear Reactor                   exemptions from the requirements of 10
                                                    BILLING CODE 7590–01–P
                                                                                                            Regulation, U.S. Nuclear Regulatory                    CFR part 50 when: (1) The exemptions
                                                                                                            Commission, Washington DC 20555–                       are authorized by law, will not present
                                                                                                            0001; telephone: 301–415–2597, email:                  an undue risk to public health or safety,
                                                                                                            V.Sreenivas@nrc.gov.                                   and are consistent with the common


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                                                    29346                        Federal Register / Vol. 82, No. 123 / Wednesday, June 28, 2017 / Notices

                                                    defense and security; and (2) when                      § 50.46 limits of 2,200 degrees                        D. Special Circumstances
                                                    special circumstances are present.                      Fahrenheit and 17 percent equivalent                     Special circumstances, in accordance
                                                    Under § 50.12(a)(2), special                            clad reacted. Furthermore, the NRC staff               with § 50.12(a)(2)(ii), are present
                                                    circumstances include, among other                      has concluded that oxidation                           whenever application of the regulation
                                                    things, when application of the specific                measurements provided by the licensee                  in the particular circumstances is not
                                                    regulation in the particular                            illustrate that oxide thickness (and                   necessary to achieve the underlying
                                                    circumstance would not serve, or is not                 associated hydrogen pickup) for                        purpose of the rule. The underlying
                                                    necessary to achieve, the underlying                    Optimized ZIRLOTM at any given                         purpose of § 50.46 and appendix K to 10
                                                    purpose of the rule.                                    burnup would be less than both                         CFR part 50 is to establish acceptance
                                                    A. Authorized by Law                                    zircaloy-4 and ZIRLOTM. Hence, the                     criteria for ECCS performance. The
                                                                                                            NRC staff concludes that Optimized                     wording of the regulations in § 50.46
                                                      The exemption would allow the use                     ZIRLOTM would be expected to
                                                    of Optimized ZIRLOTM fuel rod                                                                                  and appendix K is not directly
                                                                                                            maintain better post-quench ductility                  applicable to Optimized ZIRLOTM, even
                                                    cladding material at Ginna. As stated                   than ZIRLOTM. This finding is further
                                                    above, § 50.12 allows the NRC to grant                                                                         though the evaluations above show that
                                                                                                            supported by an ongoing loss-of-coolant                the intent of the regulation is met.
                                                    exemptions from the requirements of 10                  accident research program at Argonne
                                                    CFR part 50. The NRC staff has                                                                                 Therefore, since the underlying
                                                                                                            National Laboratory, which has                         purposes of § 50.46 and appendix K are
                                                    determined that granting the licensee’s                 identified a strong correlation between
                                                    requested exemption would not result                                                                           achieved through the use of Optimized
                                                                                                            cladding hydrogen content (due to in-                  ZIRLOTM fuel rod cladding material, the
                                                    in a violation of the Atomic Energy Act                 service corrosion) and post-quench
                                                    of 1954, as amended, or the                                                                                    special circumstances required by
                                                                                                            ductility.                                             § 50.12(a)(2)(ii) for the granting of an
                                                    Commission’s regulations. Therefore,
                                                                                                               The underlying purpose of 10 CFR                    exemption from certain requirements of
                                                    the exemption is authorized by law.
                                                                                                            part 50, appendix K, section I.A.5,                    § 50.46 and appendix K exist.
                                                    B. No Undue Risk to Public Health and                   ‘‘Metal-Water Reaction Rate,’’ is to
                                                    Safety                                                  ensure that cladding oxidation and                     E. Environmental Considerations
                                                       The underlying purpose of § 50.46 is                 hydrogen generation are appropriately                     The NRC staff determined that the
                                                    to establish acceptance criteria for                    limited during a loss-of-coolant accident              exemption discussed herein meets the
                                                    adequate ECCS performance. By letter                    and conservatively accounted for in the                eligibility criteria for the categorical
                                                    dated June 10, 2005, the NRC staff                      ECCS evaluation model. Appendix K                      exclusion set forth in § 51.22(c)(9)
                                                    issued a safety evaluation (ADAMS                       states that the rates of energy release,               because it is related to a requirement
                                                    Accession No ML051670408) approving                     hydrogen concentration, and cladding                   concerning the installation or use of a
                                                    Addendum 1 to Westinghouse Topical                      oxidation from the metal-water reaction                facility component located within the
                                                    Report WCAP–12610–P–A and CENPD–                        shall be calculated using the Baker-Just               restricted area, as defined in 10 CFR
                                                    404–P–A, ‘‘Optimized ZIRLOTM’’ (these                   equation. Since the Baker-Just equation                part 20, and the granting of this
                                                    topical reports are not publicly available              presumes the use of zircaloy clad fuel,                exemption involves: (1) No significant
                                                    because they contain proprietary                        strict application of the rule would not               hazards consideration, (2) no significant
                                                    information), wherein the NRC staff                     permit use of the equation for                         change in the types or a significant
                                                    approved the use of Optimized                           Optimized ZIRLOTM cladding for                         increase in the amounts of any effluents
                                                    ZIRLOTM as a fuel cladding material.                    determining acceptable fuel                            that may be released offsite, and (3) no
                                                    The NRC staff approved the use of                       performance. However, the NRC staff                    significant increase in individual or
                                                    Optimized ZIRLOTM as a fuel cladding                    has found that metal-water reaction tests              cumulative occupational radiation
                                                    material based on: (1) Similarities with                performed by Westinghouse on                           exposure. Therefore, in accordance with
                                                    standard ZIRLOTM, (2) demonstrated                      Optimized ZIRLOTM demonstrate                          § 51.22(b), no environmental impact
                                                    material performance, and (3) a                         conservative reaction rates relative to                statement or environmental assessment
                                                    commitment to provide irradiated data                   the Baker-Just equation and are                        need to be prepared in connection with
                                                    and validate fuel performance models                    bounding for those approved for                        the NRC’s consideration of this
                                                    ahead of burnups achieved in batch                      ZIRLOTM under anticipated operational                  exemption request. The basis for the
                                                    application. The NRC staff’s safety                     occurrences and postulated accidents.                  NRC staff’s determination is discussed
                                                    evaluation for Optimized ZIRLOTM                           Based on the above, no new accident                 as follows with an evaluation against
                                                    includes ten conditions and limitations                 precursors are created by using                        each of the requirements in
                                                    for its use. As previously documented in                Optimized ZIRLOTM; thus, the                           § 51.22(c)(9).
                                                    the NRC staff’s review of topical reports               probability of postulated accidents is
                                                    submitted by Westinghouse Electric                      not increased. Also, based on the above,               Requirements in § 51.22(c)(9)(i)
                                                    Company, LLC (Westinghouse), and                        the consequences of postulated                            The NRC staff evaluated the issue of
                                                    subject to compliance with the specific                 accidents are not increased. Therefore,                no significant hazards consideration,
                                                    conditions of approval established                      there is no undue risk to public health                using the standards described in
                                                    therein, the NRC staff finds that the                   and safety due to using Optimized                      § 50.92(c), as presented below:
                                                    applicability of these ECCS acceptance                  ZIRLOTM.                                                  1. Does the proposed exemption
                                                    criteria to Optimized ZIRLOTM has been                                                                         involve a significant increase in the
                                                                                                            C. Consistent With the Common Defense
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                                                    demonstrated by Westinghouse. Ring                                                                             probability or consequences of an
                                                                                                            and Security
                                                    compression tests performed by                                                                                 accident previously evaluated?
                                                    Westinghouse on Optimized ZIRLOTM                         The proposed exemption would allow                      Response: No.
                                                    (NRC-reviewed, approved, and                            the use of Optimized ZIRLOTM fuel rod                     The proposed change would allow the
                                                    documented in Appendix B of WCAP–                       cladding material at Ginna. This change                use of Optimized ZIRLOTM clad nuclear
                                                    12610–P–A and CENPD–404–P–A,                            to the plant configuration has no                      fuel in the reactors. The NRC-approved
                                                    Addendum 1–A, ‘‘Optimized                               relation to security issues. Therefore,                topical report WCAP–12610–P–A &
                                                    ZIRLOTM’’) demonstrate an acceptable                    the common defense and security is not                 CENPD–404–P–A, Addendum 1–A,
                                                    retention of post-quench ductility up to                impacted by this exemption.                            ‘‘Optimized ZIRLOTM,’’ prepared by


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                                                                                 Federal Register / Vol. 82, No. 123 / Wednesday, June 28, 2017 / Notices                                                  29347

                                                    Westinghouse Electric Company, LLC                      cladding material at Ginna. Optimized                  SECURITIES AND EXCHANGE
                                                    (Westinghouse), addresses Optimized                     ZIRLOTM has essentially the same                       COMMISSION
                                                    ZIRLOTM and demonstrates that                           properties are currently licensed
                                                                                                                                                                   [Release No. 34–81000; File No. SR–NYSE–
                                                    Optimized ZIRLOTM has essentially the                   ZIRLO®. The use of Optimized ZIRLOTM                   2017–12]
                                                    same properties as currently licensed                   fuel rod cladding material will not
                                                    ZIRLO®. The fuel cladding itself is not                 significantly change the types of                      Self-Regulatory Organizations; New
                                                    an accident initiator and does not affect               effluents that may be released offsite or              York Stock Exchange LLC; Notice of
                                                    accident probability.                                   significantly increase the amount of                   Withdrawal of a Proposed Rule
                                                       2. Does the proposed exemption                       effluents that may be released offsite.                Change, as Modified by Amendment
                                                    create the possibility of a new or                                                                             No. 3, To Amend Section 102.01B of
                                                                                                            Therefore, the provisions of
                                                    different kind of accident from any                                                                            the NYSE Listed Company Manual To
                                                                                                            § 51.22(c)(9)(ii) are satisfied.
                                                    accident previously evaluated?                                                                                 Modify the Requirements That Apply to
                                                       Response: No.                                        Requirements in § 51.22(c)(9)(iii)                     Companies That List Without a Prior
                                                       Use of Optimized ZIRLOTM clad fuel
                                                                                                                                                                   Exchange Act Registration and That
                                                    will not result in changes in the                         The proposed exemption would allow
                                                                                                                                                                   Are Not Listing in Connection With an
                                                    operation or configuration of the                       the use of Optimized ZIRLOTM fuel rod
                                                                                                                                                                   Underwritten Initial Public Offering
                                                    facility. Topical Report WCAP–12610–                    cladding material at Ginna. Optimized
                                                    P–A & CENPD–404–P–A, Addendum 1–                        ZIRLOTM has essentially the same                       June 22, 2017.
                                                    A, demonstrated that the material                       properties are currently licensed                         On March 13, 2017, the New York
                                                    properties of Optimized ZIRLOTM are                     ZIRLO®. The use of Optimized ZIRLOTM                   Stock Exchange LLC (‘‘NYSE’’ or the
                                                    similar to those of standard ZIRLO®,                    fuel rod cladding material at Ginna will               ‘‘Exchange’’) filed with the Securities
                                                    thus precluding the possibility of the                  not significantly increase individual                  and Exchange Commission
                                                    fuel cladding becoming an accident                      occupational radiation exposure or                     (‘‘Commission’’), pursuant to Section
                                                    initiator and causing a new or different                significantly increase cumulative                      19(b)(1) of the Securities Exchange Act
                                                    type of accident. Therefore, the                        occupational radiation exposure.                       of 1934 (‘‘Act’’) 1 and Rule 19b–4
                                                    proposed change does not create the                     Therefore, the provisions of                           thereunder,2 a proposed rule change to
                                                    possibility of a new or different kind of                                                                      amend Section 102.01B of the Manual to
                                                                                                            § 51.22(c)(9)(iii) are satisfied.
                                                    accident from any previously evaluated.                                                                        modify the provisions relating to the
                                                       3. Does the proposed exemption                       Conclusion                                             qualification of companies listing
                                                    involve a significant reduction in a                                                                           without a prior Exchange Act
                                                    margin of safety?                                          Based on the above, the NRC staff                   registration and an underwritten
                                                       Response: No.                                        concludes that the proposed exemption                  offering to permit the listing of such
                                                       The proposed change will not involve                 meets the eligibility criteria for the                 companies immediately upon
                                                    a significant reduction in the margin of                categorical exclusion set forth in                     effectiveness of an Exchange Act
                                                    safety. Topical Report WCAP–12610–P–                    § 51.22(c)(9). Therefore, in accordance                registration statement without a
                                                    A & CENPD–404–P–A, Addendum 1–A,                        with § 51.22(b), no environmental                      concurrent public offering registered
                                                    demonstrated that the material                          impact statement or environmental                      under the Securities Act of 1933
                                                    properties of the Optimized ZIRLOTM                     assessment need to be prepared in                      provided the company meets all other
                                                    are not significantly different from those              connection with the NRC’s proposed                     listing requirements. The proposal also
                                                    of standard ZIRLO®. Optimized                           issuance of this exemption.                            would eliminate the requirement to
                                                    ZIRLOTM is expected to perform                                                                                 have a private placement market trading
                                                    similarly to standard ZIRLO® for all                    IV. Conclusion
                                                                                                                                                                   price if there is a valuation from an
                                                    normal operating and accident                                                                                  independent third-party of $250 million
                                                    scenarios, including both loss of coolant                 Accordingly, the Commission has
                                                                                                            determined that, pursuant to § 50.12, the              in market value of publicly-held shares.
                                                    accident LOCA) and non-LOCA                                                                                    The proposed rule change was
                                                    scenarios. For LOCA scenarios, where                    exemption is authorized by law, will not
                                                                                                            present an undue risk to the public                    published for comment in the Federal
                                                    the slight difference is Optimized                                                                             Register on March 31, 2017.3 The
                                                    ZIRLOTM material properties relative to                 health and safety, and is consistent with
                                                                                                                                                                   Commission received no comments on
                                                    standard ZIRLO® could have some                         the common defense and security. Also,
                                                                                                                                                                   the proposed rule change. On May 12,
                                                    impact on the overall accident scenario,                special circumstances are present.
                                                                                                                                                                   2017, the Commission extended the
                                                    plant-specific LOCA analyses using                      Therefore, the Commission hereby
                                                                                                                                                                   time period within which to approve
                                                    Optimized ZIRLOTM properties will                       grants Exelon an exemption from certain                the proposed rule change, disapprove
                                                    demonstrate that the acceptance criteria                requirements of § 50.46 and 10 CFR part                the proposed rule change, or institute
                                                    of 10 CFR 50.46 have been satisfied.                    50, appendix K, to allow the use of                    proceedings to determine whether to
                                                    Therefore, the proposed change does not                 Optimized ZIRLOTM fuel rod cladding                    approve or disapprove the proposed
                                                    involve a significant reduction in a                    material at Ginna.                                     rule change to June 29, 2017.4 On June
                                                    margin of safety.                                                                                              6, 2017, the Exchange filed Amendment
                                                       Based on the above, the NRC staff                      Dated at Rockville, Maryland, this 19th day
                                                                                                            of June 2017.                                          No. 3 to the proposed rule change.5
                                                    concludes that the proposed exemption
                                                    presents no significant hazards                           For the Nuclear Regulatory Commission.
                                                                                                                                                                     1 15 U.S.C. 78s(b)(1).
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                                                    consideration under the standards set                   MaryJane Ross-Lee,                                       2 17 CFR 240.19b–4.
                                                    forth in § 50.92(c), and, accordingly, a                Acting Director, Division of Operating Reactor           3 See Securities Exchange Act Release No. 34–

                                                    finding of no significant hazards                       Licensing, Office of Nuclear Reactor                   80313 (March 27, 2017), 82 FR 16082 (March 31,
                                                    consideration is justified (i.e., satisfies             Regulation.                                            2017).
                                                                                                                                                                     4 See Securities Exchange Act Release No. 34–
                                                    the provisions of § 51.22(c)(9)(i)).                    [FR Doc. 2017–13517 Filed 6–27–17; 8:45 am]
                                                                                                                                                                   80670 (May 12, 2017), 82 FR 22866 (May 18, 2017).
                                                    Requirements in § 51.22(c)(9)(ii)                       BILLING CODE 7590–01–P                                   5 The Exchange also filed Amendment No. 1 to

                                                                                                                                                                   the proposed rule change on May 16, 2017 and
                                                      The proposed exemption would allow                                                                           Amendment No. 2 to the proposed rule change on
                                                    the use of Optimized ZIRLOTM fuel rod                                                                                                                   Continued




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Document Created: 2017-06-28 01:10:27
Document Modified: 2017-06-28 01:10:27
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionNotices
ActionExemption; issuance.
DatesThe exemption was issued on June 19, 2017.
ContactV. Sreenivas, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington DC 20555-0001; telephone: 301-415-2597, email: [email protected]
FR Citation82 FR 29345 

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