81_FR_14186 81 FR 14135 - Exelon Generation Company, LLC; Dresden Nuclear Power Station, Units 1, 2, and 3; Independent Spent Fuel Storage Installation

81 FR 14135 - Exelon Generation Company, LLC; Dresden Nuclear Power Station, Units 1, 2, and 3; Independent Spent Fuel Storage Installation

NUCLEAR REGULATORY COMMISSION

Federal Register Volume 81, Issue 51 (March 16, 2016)

Page Range14135-14139
FR Document2016-05955

The U.S. Nuclear Regulatory Commission (NRC) is issuing an exemption from certain requirements regarding the storage of a thoria rod canister in response to a request submitted by Exelon Generation Company, LLC (EGC) on January 29, 2015, for its general license to operate an independent spent fuel storage installation (ISFSI) at the Dresden Nuclear Power Station (DNPS). This exemption would permit EGC to load and store the DNPS Unit 1 thoria rod canister containing 18 DNPS Unit 1 thoria rods in a Holtec International, Inc., HI-STORM 100 multi-purpose canister (MPC)-68M using Certificate of Compliance (CoC) No. 1014, Amendment No. 8, Rev. 1.\1\ ---------------------------------------------------------------------------

Federal Register, Volume 81 Issue 51 (Wednesday, March 16, 2016)
[Federal Register Volume 81, Number 51 (Wednesday, March 16, 2016)]
[Notices]
[Pages 14135-14139]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-05955]


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NUCLEAR REGULATORY COMMISSION

[Docket Nos. 50-010, 50-237, 50-249, and 72-37; NRC-2016-0046]


Exelon Generation Company, LLC; Dresden Nuclear Power Station, 
Units 1, 2, and 3; Independent Spent Fuel Storage Installation

AGENCY: Nuclear Regulatory Commission.

ACTION: Exemption; issuance.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing an 
exemption from certain requirements regarding the storage of a thoria 
rod canister in response to a request submitted by Exelon Generation 
Company, LLC (EGC) on January 29, 2015, for its general license to 
operate an independent spent fuel storage installation (ISFSI) at the 
Dresden Nuclear Power Station (DNPS). This exemption would permit EGC 
to load and store the DNPS Unit 1 thoria rod canister containing 18 
DNPS Unit 1 thoria rods in a Holtec International, Inc., HI-STORM 100 
multi-purpose canister (MPC)-68M using Certificate of Compliance (CoC) 
No. 1014, Amendment No. 8, Rev. 1.\1\
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    \1\ The licensee's application referred to Amendment 8; since 
that time, Amendment 8 has been revised. (On February 16, 2016, 
Amendment 8, Rev. 1 to CoC 1014 became effective.) The revision does 
not impact the exemption request that is the subject of this 
exemption because none of the changes in the revision revised the 
thoria contents or the physical characteristics of the storage cask.

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DATES: March 16, 2016.

ADDRESSES: Please refer to Docket ID NRC-2016-0046 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-2016-0046. 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]. For 
the convenience of the reader, the ADAMS accession numbers are provided 
in a table in the ``Availability of Documents'' section of 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: Bernard White, Office of Nuclear 
Material Safety and Safeguards, U.S. Nuclear Regulatory Commission, 
Washington DC 20555-0001; telephone: 301-415-6577; email: 
[email protected].

SUPPLEMENTARY INFORMATION:

I. Background

    Dresden Unit 1 produced power commercially from 1960 to October 31, 
1978. The plant shut down in October 1978 and is currently in SAFSTOR. 
The decommissioning plan was approved in September 1993. No significant 
dismantlement activities are underway. Isolation of Units 1, 2, and 3 
is complete.
    Consistent with subpart K of part 72 of title 10 of the Code of 
Federal Regulations (10 CFR), a general license is issued for the 
storage of spent fuel in an ISFSI at power reactor sites to persons 
authorized to possess or operate nuclear power reactors under 10 CFR 
part 50. EGC is currently authorized to store spent fuel at the DNPS 
ISFSI under the 10 CFR part 72 general license provisions. The DNPS 
ISFSI is currently loading and storing spent fuel in Holtec HI-STORM 
100 storage casks, approved by the NRC under CoC No. 1014.

II. Request/Action

    By letter dated January 29, 2015, as supplemented on June 8, 2015, 
EGC submitted a request for an exemption from 10 CFR 72.212(b)(3) and 
the portion of 10 CFR 72.212(b)(11) that requires compliance with the 
terms, conditions, and specifications of CoC No. 1014, Amendment No. 8, 
for the Holtec HI-STORM 100 with the MPC-68M, to the extent necessary 
for EGC to load and store one DNPS Unit 1 thoria rod canister 
containing 18 DNPS Unit 1 thoria rods. Upon review, the NRC added the 
following requirements for the proposed action pursuant to its 
authority under 10 CFR 72.7: 10 CFR 72.212(a)(2), which limits storage 
of spent fuel in casks approved under part 72; 72.212(b)(5)(i), which 
states a ``cask, once loaded with spent fuel . . . will conform to the 
terms, conditions and specifications of a CoC or an amended CoC listed 
in Sec.  72.214''; and 10 CFR 72.214, ``List of approved spent fuel 
storage casks.''

III. Discussion

    Pursuant to 10 CFR 72.7, the Commission may, upon application by 
any interested person or upon its own initiative, grant such exemptions 
from the requirements of the regulations of 10 CFR part 72 as it 
determines are authorized by law and will not endanger life or property 
or the common defense and security, and are otherwise in the public 
interest.

A. Authorized by Law

    This exemption would permit the applicant to load and store the 
DNPS Unit 1 thoria rod canister containing 18 DNPS Unit 1 thoria rods 
in the HI-STORM 100 MPC-68M CoC 1014, Amendment No. 8, Rev. 1, which 
otherwise would not permit the storage of thoria rods. The provisions 
from which the NRC is granting the exemption require the licensee to 
comply with the terms, conditions, and specifications of the CoCs for 
the approved cask model it uses. Section 72.7 allows the Commission to 
grant exemptions from the requirements of 10 CFR part 72 if the 
exemption is authorized by law, will not endanger life or property or 
the common defense

[[Page 14136]]

and security, and is otherwise in the public interest. As explained in 
the following discussion, the proposed exemption will not endanger life 
or property, or the common defense and security, and is otherwise in 
the public interest. Issuance of this exemption is consistent with the 
Atomic Energy Act of 1954, as amended, and not otherwise inconsistent 
with NRC's regulations or other applicable laws. Therefore, issuance of 
the exemption is authorized by law.

B. Will Not Endanger Life or Property or the Common Defense and 
Security

    Approval of this exemption request will allow EGC to load and store 
the 18 thoria rods in the DNPS Unit 1 thoria rod canister within a 
Holtec HI-STORM 100 MPC-68M. As discussed in the following section, the 
NRC staff finds that EGC's proposal to load and store thoria rods is 
acceptable and will not endanger life or property or common defense and 
security.
Review of the Requested Exemption
    The addition of the MPC-68M to the list of approved storage cask 
designs for the Holtec HI-STORM 100 system was reviewed previously and 
approved by the NRC. The CoC and safety evaluation report (SER) for 
Amendment 8 were issued on May 10, 2012, corrected on November 12, 
2012, and revised on February 16, 2016. Amendment No. 8 added the MPC-
68M canister, two new boiling water reactor (BWR) fuel assembly/array 
classes, a new pressurized-water reactor fuel assembly/array class, and 
revised Condition No. 3 in the certificate to include leak testing of 
the confinement boundary base material in addition to confinement 
welds. Amendment 8 also made other administrative changes. Thoria rods/
assemblies were not considered in Amendment No. 8 for the MPC-68M, 
however they have been approved for storage in the MPC-68, MPC-68F and 
MPC-68FF in Amendment No. 1.
    The applicant stated that the design characteristics of the thoria 
rods in the exemption request are the same as those approved for 
storage in the MPC-68, MPC-68F and MPC-68FF. The characteristics of 
these rods are specified in CoC No. 1014, Amendment No. 8, Revision No. 
1, Appendix B, Table 2.1-1, Section II, ``MPC MODEL: MPC-68F,'' Item 
A.7 and Section III, ``MPC MODEL: MPC-68 and MPC-68FF,'' Item A.3. In 
addition, the applicant cited the Safety Analysis Report (SAR) for CoC 
No. 1014, Amendment No. 8, and the NRC staff's corresponding SER dated 
May 10, 2012, which documented the NRC staff's basis for approval of 
Amendment No. 8, to support the exemption request.
    The NRC staff reviewed the requested exemption and determined that 
it does not change the fundamental design, components, or safety 
features of the storage system. The NRC staff evaluated the applicable 
potential safety impacts of granting the exemption to assess the 
potential for any danger to life or property or the common defense and 
security. Specifically, the NRC staff reviewed the applicant's 
structural integrity, thermal, confinement, shielding, and criticality 
evaluations for the proposed exemption.
    Structural Review for the Requested Exemption: The NRC staff 
reviewed the exemption request including the documents referenced by 
the applicant. Specifically, the NRC staff reviewed the design 
characteristics of thoria rods and canister limits provided by the 
applicant in its June 8, 2015, response to NRC's request for additional 
information (RAI) dated May 8, 2015, and verified that the thoria rods 
and canister limits are the same as those previously approved in 
Amendment No. 1 to CoC 1014. In its review of Amendment No. 8, the NRC 
staff determined that the structural analysis presented in ``HI-STORM 
Topical Safety Analysis Report (TSAR),'' Holtec Report HI-951312, Rev. 
11, as supplemented on July 3, 2001, August 13 and 17, and October 5, 
12, and 19, 2001, demonstrated that the thoria rod canister was 
structurally adequate to support the loads during normal lifting 
operations, normal and off-normal conditions, as well as during 
postulated-accident conditions.
    Based on the NRC staff's review of the physical characteristics of 
the thoria rods, thoria canister and MPC-68M canister, the NRC staff 
concludes that the proposed storage of thoria rods in an MPC-68M will 
be bounded by the previously approved structural analysis for MPC-68M 
because the thoria rods and canister limits are the same as those 
previously approved in Amendment No. 1 to CoC 1014. Therefore, the NRC 
staff has reasonable assurance that the structural adequacy of the MPC-
68M for the intended purpose will be maintained, as documented in the 
NRC staff's SER for Amendment No. 8 to CoC 1014.
    Thermal Review for the Requested Exemption: The decay heat per DNPS 
Unit 1 thoria rod canister is less than or equal to 115 watts, which is 
significantly lower than the maximum allowable decay heat limit of 393 
watts per fuel storage location for damaged fuel and fuel debris, as 
specified in Amendment No. 8 to CoC 1014. In addition, the exemption, 
does not change the cask decay heat distribution due to the lower decay 
heat of the DNPS Unit 1 thoria rod canister. Accordingly, the decay 
heat analyses reviewed and approved by the NRC staff in Amendment 8 are 
bounding.
    The applicant referenced the previous Holtec thermal evaluation of 
the MPC-68M for Amendment No. 8 to CoC 1014 to show that it has lower 
maximum temperatures (i.e., fuel cladding, basket, and MPC shell) than 
the maximum temperatures of Holtec's thermal evaluation for the MPC-68 
canister. Holtec stated that this is due to the higher thermal 
conductivity of the Metamic-HT basket material, the use of full length 
aluminum basket shims, and the higher emissivities of the basket and 
basket shims. Based on the NRC staff's review of the exemption request 
and the references cited therein, the NRC staff finds acceptable the 
small decay heat contribution of the thoria rods, when compared with 
the design basis-heat load for failed fuel. In addition, the NRC staff 
finds that the thermal effects of an MPC-68M basket design loaded with 
one DNPS Unit 1 thoria rod canister is bounded by previous thermal 
analysis. Therefore, if one DNPS Unit 1 thoria rod canister is included 
in an MPC-68M, the NRC staff concludes that the fuel cladding 
temperature of the MPC-68M and its contents are bounded by those NRC 
reviewed and approved for CoC 1014, Amendment No. 8.
    The applicant stated that the cladding hoop stress for the thoria 
rods, during vacuum drying, is similar to the stresses expected in 
uranium dioxide (UO2) rods stored in an MPC-68M. The 
applicant also stated it does not plan to load high burnup fuel, i.e., 
fuel with an average burnup exceeding 45,000 MWD/MTU, in the MPC-68M 
that contains the thoria rod canister. The applicant stated that this 
would result in a decay heat below the design basis decay heat and, 
therefore a lower design basis fuel temperature compared to the value 
reported in Table 4.III.5 of the HI-STORM 100 FSAR, Revision 11, during 
vacuum drying operations. Based on the lower decay heat and similar 
expected cladding hoop stress for the thoria rods during vacuum drying, 
the NRC staff finds that the vacuum drying time limits in CoC 1014, 
Amendment No. 8, Revision No. 1, Technical Specifications, which were 
not necessary for the MPC-68M in CoC 1014, Amendment No. 8, Revision 
No. 1, are also not necessary for the MPC-68M with the inclusion of the 
DNPS Unit 1 thoria rod canister. Consistent with EGC's request, this 
exemption does not authorize the loading and storage of

[[Page 14137]]

high burnup fuel in the MPC-68M if the DNPS Unit 1 thoria rod canister 
is loaded in the MPC-68M. Accordingly, the NRC staff finds that the 
cask loaded with 1 thoria rod canister will continue to meet applicable 
thermal requirements.
    Confinement Review for the Requested Exemption: EGC stated that the 
design of the MPC-68M confinement boundary, which includes the vent and 
drain ports, is unchanged by the exemption request. In addition, EGC 
stated that the exemption would not change the short-term cask 
operations, including draining of the MPC, welding of the lid, drying 
and backfilling with inert gas, and handling of the MPC that were 
approved in Amendment No. 8 to CoC No. 1014. Since this exemption would 
not change the design aspects, including a leak tight confinement 
boundary (leak tight is defined as <=1 x 1-\7\ ref-cc/sec, 
as defined by American National Standards Institute (ANSI) N14.5, 
``Radioactive Materials--Leakage Tests on Packages for Shipment''), 
from those previously reviewed and approved by the NRC, the confinement 
characteristics will continue to be adequately maintained.
    Shielding Review for the Requested Exemption: The NRC staff 
reviewed the exemption request and the applicant's RAI response. EGC is 
relying on NRC's previous approval of Amendment Nos. 1 and 8 to CoC No. 
1014 to conclude that offsite doses from a storage cask containing a 
single thoria rod canister along with 67design basis 6x6 Dresden Unit 1 
fuel assemblies are is the same as or bounded by previous analyses and 
did not perform any additional analysis for this exemption. The 
applicant cites the shielding analysis of the thoria rods as previously 
documented in ``HI-STORM TSAR,'' HOLTEC Report HI-951312, Rev. 11, and 
approved by the NRC staff in CoC 1014, Amendment No. 1 and documented 
in the NRC staff's SER dated July 18, 2002. Sections 5.2.6 and 5.4.8 of 
the Holtec TSAR includes Holtec's analysis of the thoria rods, and 
presents a summary of the neutron and photon sources in Tables 5.2-7, 
5.2-19, 5.2-37, and 5.2-38. EGC stated that the neutron source for the 
thoria rods remains below that of the design basis fuel assembly. EGC 
also stated that the photon source for the thoria rods is bounded by 
the design basis fuel assembly except in the 2.5-3.0 MeV energy range. 
To demonstrate that the gamma dose rate from the thoria rods is bounded 
by the design-basis BWR fuel, EGC referred to Holtec's TSAR for 
Amendment No. 1, which, according to Holtec, conservatively assumed 68 
thoria rod canisters were present in the MPC, even though only one 
thoria rod canister exists on the DNPS site. Holtec's dose rate 
evaluation showed that the external dose rate for a HI-STORM 100 cask 
loaded with 68 thoria rod canisters, each with 18 Thoria rods, was 17 
percent higher than a canister filled with design-basis fuel. In its 
SER for approval of Amendment No. 1, the NRC staff considered the 
conservatisms built into Holtec's dose rate analysis and concluded that 
a single thoria rod canister would not likely result in a dose rate 
increase for a MPC-68M canister loaded with 67 BWR spent fuel 
assemblies and a single thoria rod canister containing up to 18 thoria 
rods.
    Subsequently, in its review of Amendment 8, the NRC staff reviewed 
the impact from the MPC-68M basket on external dose rates compared to 
the borated baskets for the other MPC-68 canisters. Considering that 
the outer loaded assemblies provide significant shielding of the 
innermost assemblies, the NRC staff determined that the dose rate is 
dominated by the peripherally loaded assemblies. The NRC staff, using 
MicroShield[supreg], calculated dose rates with the two 
different basket materials. Based on the results of this calculation, 
the NRC staff found that the canister and overpack were the components 
most critical to shielding. Additionally, in the SER for Amendment No. 
8, NRC staff concluded that Holtec showed that the shielding provided 
by the MPC-68M did not significantly change from the MPC-68 canister, 
since neither the canister shell nor the overpack changed and the 
Metamic-HT basket would have negligible impact on external dose rates.
    In prior NRC staff reviews of Amendment Nos. 1 and 8, the NRC staff 
concluded that the Metamic-HT basket in the MPC-68M has very little 
effect on the external dose rate; and a single thoria rod canister, 
while unbounded in the 2.5-3.0 MeV energy range, will not impact cask 
external dose rates. Accordingly, NRC staff has reasonable assurance 
that off-site doses from the presence of a single, thoria rod canister 
in an MPC-68M loaded with design-basis fuel with the same 
characteristics as those approved for the MPC-68, MPC-68F and MPC-68FF 
will not increase when compared to a canister loaded with 68 design-
basis fuel assemblies. Therefore, such a canister will continue to meet 
applicable offsite dose requirements.
    Criticality Review for the Requested Exemption: The NRC staff 
reviewed the exemption request and the applicant's RAI response. The 
applicant initially only cited the criticality analysis of the thoria 
rods previously documented in ``HI-STORM TSAR'', Holtec Report HI-
951312, Rev. 11, and documented in the NRC staff's SER dated July 18, 
2002, which was the basis for approval of Amendment No. 1 to CoC No. 
1014. In Section 6.4.6 of the TSAR, Holtec shows that the reactivity of 
the thoria rods remains below that of the design-basis fuel assembly 
reactivity, which is summarized in Holtec TSAR Tables 6.1.7 and 6.1.8. 
The NRC staff did not analyze any impact the thoria rods might have on 
criticality during its review of the Holtec TSAR as the components 
important to criticality control in the MPC-68 and MPC-68FF remained 
unchanged from its prior review of the HI-STAR Amendment No. 1. This is 
not the case with the MPC-68M.
    In its June 8, 2015 response to additional information, the 
applicant cited the NRC staff's basis for approval of CoC 1014, 
Amendment No. 8 in its SER dated May 10, 2012, to support this 
exemption request. The applicant noted several advantages that Metamic-
HT has over older basket designs. Among them are the inability of the 
neutron absorber material to detach or relocate, and the presence of 
absorber material along the entire length of the basket, rather than a 
fixed, discrete section. During its review of Amendment No. 8, NRC 
staff noted that the applicant's analysis resulted in a large margin to 
criticality and concluded that the use of the existing fuel assemblies 
authorized in the CoC within the Metamic-HT basket in the MPC-68M would 
remain subcritical.
    Two prior NRC staff reviews of amendments (HI-STORM Amendment Nos. 
1 and 8) have found the Metamic-HT basket in the MPC-68M to be at least 
as effective as those in the MPC-68 and MPC-68FF. In addition, these 
reviews found that a thoria rod canister is less reactive than the 
spent fuel assemblies currently authorized in CoC 1014. Based on its 
consideration of these previous approvals, NRC staff concludes that the 
presence of a single, thoria rod canister in an MPC-68M is bounded by 
prior analyses of existing, authorized contents.
    Review of Common Defense and Security: The NRC staff also 
considered potential impacts of granting the exemption on the common 
defense and security. The requested exemption is not related to any 
security or common defense aspect of the DNPS ISFSI, therefore granting 
the exemption would not result in any potential impacts to common 
defense and security.
    Based on its review, the NRC staff has reasonable assurance that in 
granting the exemption, the storage system will

[[Page 14138]]

continue to meet the requirements of 10 CFR part 72 and the offsite 
dose limits of 10 CFR part 20 and, therefore, will not endanger life or 
property. The NRC staff also finds that the exemption would not 
endanger common defense and security.

C. Otherwise in the Public Interest

    In considering whether granting the exemption is in the public 
interest, the NRC staff considered the alternative of not granting the 
exemption. If the exemption was not granted, in order to comply with 
the CoC, the DNPS Unit 1 thoria rod canister containing the 18 thoria 
rods would not be loaded during the 2016 spent fuel loading campaign 
(SFLC). The applicant maintains that loading the thoria rod canister 
during the 2016 DNPS SFLC is part of a program to ensure full core 
discharge capability.
    EGC stated that granting the exemption is in the public interest 
since it will permit storage of the thoria rods in an inherently safe 
and passive system. Additionally, EGC stated that granting the 
exemption would permit this storage without the burden and impact of 
requesting an amendment to the CoC. Not granting the exemption would 
require Holtec to submit an amendment to the CoC, which would delay the 
DNPS program to ensure full core discharge capability and impact future 
loadings. In addition to allowing DNPS to continue with its program to 
ensure full core discharge capability on schedule, based on its review 
of EGC's request, the NRC staff concludes that allowing thoria rods 
with the same characteristics as those approved for the MPC-68, MPC-68F 
and MPC-68FF as an approved content in the MPC-68M would continue to 
provide adequate protection of public health and safety. Therefore, 
granting the exemption is otherwise in the public interest.

D. Environmental Considerations

    The NRC staff also considered whether there would be any 
significant environmental impacts associated with the exemption. For 
this proposed action, the NRC staff performed an environmental 
assessment pursuant to 10 CFR 51.30. The environmental assessment 
concluded that the proposed action would not significantly impact the 
quality of the human environment. The NRC staff concluded that the 
proposed action would not result in any changes in the types or amounts 
of any radiological or non-radiological effluents that may be released 
offsite, and there is no significant increase in occupational or public 
radiation exposure because of the proposed action. The Environmental 
Assessment and the Finding of No Significant Impact was published on 
March 4, 2016 (81 FR 11603).

IV. Conclusions

    Accordingly, the Commission has determined that, pursuant to 10 CFR 
72.7, this exemption is authorized by law, will not endanger life or 
property or the common defense and security, and is otherwise in the 
public interest. Therefore, the Commission hereby grants EGC an 
exemption from 10 CFR 72.212(a)(2), 10 CFR 72.212(b)(3), 10 CFR 
72.212(b)(5)(i), 10 CFR 72.214, and the portion of 10 CFR 72.212(b)(11) 
that requires compliance with terms, conditions, and specifications of 
the CoC only with regard to storage of DNPS Unit 1 thoria rods with the 
same characteristics as those specified for storage in the MPC-68, MPC-
68F and MPC-68FF in CoC No. 1014, Amendment No. 8, Revision No. 1, 
Appendix B, Table 2.1-1, Section II, ``MPC MODEL: MPC-68F,'' Item A.7 
and Section III, ``MPC MODEL: MPC-68 and MPC-68FF,'' Item A.3 in the 
MPC-68M using the Holtec[supreg] CoC No. 1014, Amendment No. 
8, Revision No. 1. This exemption does not authorize loading in a 
canister with other spent fuel which has an average burnup exceeding 
45,000 MWD/MTU.

V. Availability of Documents

    The documents identified in the following table are available to 
interested persons through one or more of the methods indicated in the 
ADDRESSES section.

------------------------------------------------------------------------
             Document                       ADAMS Accession No.
------------------------------------------------------------------------
Exelon Generation Company (EGC)    ML15029A334.
 application dated January 29,
 2015.
EGC supplement dated June 8, 2015  ML15159A745.
CoC 1014 Amendment 8, Revision 1.  ML16041A233.
Amendment No. 8 CoC and SER        ML12132A028.
 issued on May 10, 2012.
Amendment No 8 correction (CoC     ML12213A203.
 and SER) issued on November 12,
 2012.
Amendment No. 8, Revision No. 1    ML16041A233.
 issued on February 10, 2016.
``HI-STORM Topical Safety          ML003748149, ML072420266,
 Analysis Report (TSAR),'' Holtec   ML003748010, ML003747975, and
 Report HI-951312, Rev. 11          ML003747995.
 (Holtec amendment 1 request)
 dated August 31, 2000.
July 3, 2001 supplement to Holtec  ML011900259.
 amendment 1 request.
August 13, 2001 supplement to      ML012260436.
 Holtec amendment 1 request.
August 17, 2001 supplement to      ML012330523.
 Holtec amendment 1 request.
October 5, 2001, supplement to     ML012830522.
 Holtec amendment 1 request.
October 12, 2001, supplement to    ML012900007.
 Holtec amendment 1 request.
October 19, 2001, supplement to    ML020150094.
 Holtec amendment 1 request.
NRC's request for additional       ML15128A088.
 information dated May 8, 2015.
Amendment No. 1 to CoC 1014......  ML022000176.
HI-STORM 100 FSAR, Revision 11...  ML13246A040.
ANSI N14.5, ``Radioactive          Accessible from American National
 Materials--Leakage Tests on        Standards Institute.
 Packages for Shipment''.
HI-STAR Amendment No. 1..........  ML003780760.
------------------------------------------------------------------------


[[Page 14139]]

    The exemption is effective upon issuance.

    Dated at Rockville, Maryland, this 8th day of March, 2016.
    For the Nuclear Regulatory Commission.
Steve Ruffin,
Acting Branch Chief, Spent Fuel Licensing Branch, Division of Spent 
Fuel Management, Office of Nuclear Material Safetyand Safeguards.
[FR Doc. 2016-05955 Filed 3-15-16; 8:45 am]
 BILLING CODE 7590-01-P



                                                                              Federal Register / Vol. 81, No. 51 / Wednesday, March 16, 2016 / Notices                                              14135

                                                  material. Each member provides                          DATES:   March 16, 2016.                               an ISFSI at power reactor sites to
                                                  technical assistance in his/her specific                ADDRESSES:    Please refer to Docket ID                persons authorized to possess or operate
                                                  area(s) of expertise, particularly with                 NRC–2016–0046 when contacting the                      nuclear power reactors under 10 CFR
                                                  respect to emerging technologies.                       NRC about the availability of                          part 50. EGC is currently authorized to
                                                  Members also provide guidance as to                     information regarding this document.                   store spent fuel at the DNPS ISFSI under
                                                  NRC’s role in relation to the                           You may obtain publicly-available                      the 10 CFR part 72 general license
                                                  responsibilities of other Federal                       information related to this document                   provisions. The DNPS ISFSI is currently
                                                  agencies as well as of various                          using any of the following methods:                    loading and storing spent fuel in Holtec
                                                  professional organizations and boards.                     • Federal Rulemaking Web site: Go to                HI–STORM 100 storage casks, approved
                                                    Members of this Committee have                        http://www.regulations.gov and search                  by the NRC under CoC No. 1014.
                                                  demonstrated professional                               for Docket ID NRC–2016–0046. Address                   II. Request/Action
                                                  qualifications and expertise in both                    questions about NRC dockets to Carol
                                                  scientific and non-scientific disciplines                                                                         By letter dated January 29, 2015, as
                                                                                                          Gallagher; telephone: 301–415–3463;
                                                  including nuclear medicine; nuclear                                                                            supplemented on June 8, 2015, EGC
                                                                                                          email: Carol.Gallagher@nrc.gov. For
                                                  cardiology; radiation therapy; medical                                                                         submitted a request for an exemption
                                                                                                          technical questions, contact the
                                                  physics; nuclear pharmacy; State                                                                               from 10 CFR 72.212(b)(3) and the
                                                                                                          individual listed in the FOR FURTHER
                                                  medical regulation; patient’s rights and                                                                       portion of 10 CFR 72.212(b)(11) that
                                                                                                          INFORMATION CONTACT section of this
                                                  care; health care administration; and                                                                          requires compliance with the terms,
                                                                                                          document.                                              conditions, and specifications of CoC
                                                  Food and Drug Administration                               • NRC’s Agencywide Documents                        No. 1014, Amendment No. 8, for the
                                                  regulation.                                             Access and Management System                           Holtec HI–STORM 100 with the MPC–
                                                    Dated at Rockville, Maryland, this 10th day           (ADAMS): You may obtain publicly-                      68M, to the extent necessary for EGC to
                                                  of March 2016.                                          available documents online in the                      load and store one DNPS Unit 1 thoria
                                                    For the Nuclear Regulatory Commission.                ADAMS Public Documents collection at                   rod canister containing 18 DNPS Unit 1
                                                  Andrew L. Bates,                                        http://www.nrc.gov/reading-rm/                         thoria rods. Upon review, the NRC
                                                  Federal Advisory Committee Management                   adams.html. To begin the search, select                added the following requirements for
                                                  Officer.                                                ‘‘ADAMS Public Documents’’ and then                    the proposed action pursuant to its
                                                  [FR Doc. 2016–05944 Filed 3–15–16; 8:45 am]             select ‘‘Begin Web-based ADAMS                         authority under 10 CFR 72.7: 10 CFR
                                                  BILLING CODE 7590–01–P
                                                                                                          Search.’’ For problems with ADAMS,                     72.212(a)(2), which limits storage of
                                                                                                          please contact the NRC’s Public                        spent fuel in casks approved under part
                                                                                                          Document Room (PDR) reference staff at                 72; 72.212(b)(5)(i), which states a ‘‘cask,
                                                  NUCLEAR REGULATORY                                      1–800–397–4209, 301–415–4737, or by                    once loaded with spent fuel . . . will
                                                  COMMISSION                                              email to pdr.resource@nrc.gov. For the                 conform to the terms, conditions and
                                                                                                          convenience of the reader, the ADAMS                   specifications of a CoC or an amended
                                                  [Docket Nos. 50–010, 50–237, 50–249, and                accession numbers are provided in a
                                                  72–37; NRC–2016–0046]                                                                                          CoC listed in § 72.214’’; and 10 CFR
                                                                                                          table in the ‘‘Availability of Documents’’             72.214, ‘‘List of approved spent fuel
                                                  Exelon Generation Company, LLC;                         section of this document.                              storage casks.’’
                                                  Dresden Nuclear Power Station, Units                       • NRC’s PDR: You may examine and
                                                                                                          purchase copies of public documents at                 III. Discussion
                                                  1, 2, and 3; Independent Spent Fuel
                                                  Storage Installation                                    the NRC’s PDR, Room O1–F21, One                           Pursuant to 10 CFR 72.7, the
                                                                                                          White Flint North, 11555 Rockville                     Commission may, upon application by
                                                  AGENCY:  Nuclear Regulatory                             Pike, Rockville, Maryland 20852.                       any interested person or upon its own
                                                  Commission.                                             FOR FURTHER INFORMATION CONTACT:                       initiative, grant such exemptions from
                                                  ACTION: Exemption; issuance.                            Bernard White, Office of Nuclear                       the requirements of the regulations of 10
                                                                                                          Material Safety and Safeguards, U.S.                   CFR part 72 as it determines are
                                                  SUMMARY:   The U.S. Nuclear Regulatory                  Nuclear Regulatory Commission,                         authorized by law and will not endanger
                                                  Commission (NRC) is issuing an                          Washington DC 20555–0001; telephone:                   life or property or the common defense
                                                  exemption from certain requirements                     301–415–6577; email: Bernard.White@                    and security, and are otherwise in the
                                                  regarding the storage of a thoria rod                   nrc.gov.                                               public interest.
                                                  canister in response to a request
                                                  submitted by Exelon Generation                          SUPPLEMENTARY INFORMATION:                             A. Authorized by Law
                                                  Company, LLC (EGC) on January 29,                       I. Background                                             This exemption would permit the
                                                  2015, for its general license to operate                                                                       applicant to load and store the DNPS
                                                  an independent spent fuel storage                          Dresden Unit 1 produced power
                                                                                                                                                                 Unit 1 thoria rod canister containing 18
                                                  installation (ISFSI) at the Dresden                     commercially from 1960 to October 31,
                                                                                                                                                                 DNPS Unit 1 thoria rods in the HI–
                                                  Nuclear Power Station (DNPS). This                      1978. The plant shut down in October
                                                                                                                                                                 STORM 100 MPC–68M CoC 1014,
                                                  exemption would permit EGC to load                      1978 and is currently in SAFSTOR. The
                                                                                                                                                                 Amendment No. 8, Rev. 1, which
                                                  and store the DNPS Unit 1 thoria rod                    decommissioning plan was approved in
                                                                                                                                                                 otherwise would not permit the storage
                                                  canister containing 18 DNPS Unit 1                      September 1993. No significant
                                                                                                                                                                 of thoria rods. The provisions from
                                                  thoria rods in a Holtec International,                  dismantlement activities are underway.
                                                                                                                                                                 which the NRC is granting the
                                                  Inc., HI–STORM 100 multi-purpose                        Isolation of Units 1, 2, and 3 is
                                                                                                                                                                 exemption require the licensee to
                                                  canister (MPC)-68M using Certificate of                 complete.
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                                                                                                                                                                 comply with the terms, conditions, and
                                                  Compliance (CoC) No. 1014,                                 Consistent with subpart K of part 72
                                                                                                                                                                 specifications of the CoCs for the
                                                  Amendment No. 8, Rev. 1.1                               of title 10 of the Code of Federal
                                                                                                                                                                 approved cask model it uses. Section
                                                                                                          Regulations (10 CFR), a general license
                                                                                                                                                                 72.7 allows the Commission to grant
                                                     1 The licensee’s application referred to             is issued for the storage of spent fuel in
                                                                                                                                                                 exemptions from the requirements of 10
                                                  Amendment 8; since that time, Amendment 8 has
                                                  been revised. (On February 16, 2016, Amendment          is the subject of this exemption because none of the
                                                                                                                                                                 CFR part 72 if the exemption is
                                                  8, Rev. 1 to CoC 1014 became effective.) The            changes in the revision revised the thoria contents    authorized by law, will not endanger
                                                  revision does not impact the exemption request that     or the physical characteristics of the storage cask.   life or property or the common defense


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                                                  14136                       Federal Register / Vol. 81, No. 51 / Wednesday, March 16, 2016 / Notices

                                                  and security, and is otherwise in the                   for approval of Amendment No. 8, to                   addition, the exemption, does not
                                                  public interest. As explained in the                    support the exemption request.                        change the cask decay heat distribution
                                                  following discussion, the proposed                         The NRC staff reviewed the requested               due to the lower decay heat of the DNPS
                                                  exemption will not endanger life or                     exemption and determined that it does                 Unit 1 thoria rod canister. Accordingly,
                                                  property, or the common defense and                     not change the fundamental design,                    the decay heat analyses reviewed and
                                                  security, and is otherwise in the public                components, or safety features of the                 approved by the NRC staff in
                                                  interest. Issuance of this exemption is                 storage system. The NRC staff evaluated               Amendment 8 are bounding.
                                                  consistent with the Atomic Energy Act                   the applicable potential safety impacts                  The applicant referenced the previous
                                                  of 1954, as amended, and not otherwise                  of granting the exemption to assess the               Holtec thermal evaluation of the MPC–
                                                  inconsistent with NRC’s regulations or                  potential for any danger to life or                   68M for Amendment No. 8 to CoC 1014
                                                  other applicable laws. Therefore,                       property or the common defense and                    to show that it has lower maximum
                                                  issuance of the exemption is authorized                 security. Specifically, the NRC staff                 temperatures (i.e., fuel cladding, basket,
                                                  by law.                                                 reviewed the applicant’s structural                   and MPC shell) than the maximum
                                                                                                          integrity, thermal, confinement,                      temperatures of Holtec’s thermal
                                                  B. Will Not Endanger Life or Property or                shielding, and criticality evaluations for            evaluation for the MPC–68 canister.
                                                  the Common Defense and Security                         the proposed exemption.                               Holtec stated that this is due to the
                                                    Approval of this exemption request                       Structural Review for the Requested                higher thermal conductivity of the
                                                  will allow EGC to load and store the 18                 Exemption: The NRC staff reviewed the                 Metamic-HT basket material, the use of
                                                  thoria rods in the DNPS Unit 1 thoria                   exemption request including the                       full length aluminum basket shims, and
                                                  rod canister within a Holtec HI–STORM                   documents referenced by the applicant.                the higher emissivities of the basket and
                                                  100 MPC–68M. As discussed in the                        Specifically, the NRC staff reviewed the              basket shims. Based on the NRC staff’s
                                                  following section, the NRC staff finds                  design characteristics of thoria rods and             review of the exemption request and the
                                                  that EGC’s proposal to load and store                   canister limits provided by the                       references cited therein, the NRC staff
                                                  thoria rods is acceptable and will not                  applicant in its June 8, 2015, response               finds acceptable the small decay heat
                                                  endanger life or property or common                     to NRC’s request for additional                       contribution of the thoria rods, when
                                                  defense and security.                                   information (RAI) dated May 8, 2015,                  compared with the design basis-heat
                                                                                                          and verified that the thoria rods and                 load for failed fuel. In addition, the NRC
                                                  Review of the Requested Exemption
                                                                                                          canister limits are the same as those                 staff finds that the thermal effects of an
                                                     The addition of the MPC–68M to the                   previously approved in Amendment No.                  MPC–68M basket design loaded with
                                                  list of approved storage cask designs for               1 to CoC 1014. In its review of                       one DNPS Unit 1 thoria rod canister is
                                                  the Holtec HI–STORM 100 system was                      Amendment No. 8, the NRC staff                        bounded by previous thermal analysis.
                                                  reviewed previously and approved by                     determined that the structural analysis               Therefore, if one DNPS Unit 1 thoria rod
                                                  the NRC. The CoC and safety evaluation                  presented in ‘‘HI–STORM Topical                       canister is included in an MPC–68M,
                                                  report (SER) for Amendment 8 were                       Safety Analysis Report (TSAR),’’ Holtec               the NRC staff concludes that the fuel
                                                  issued on May 10, 2012, corrected on                    Report HI–951312, Rev. 11, as                         cladding temperature of the MPC–68M
                                                  November 12, 2012, and revised on                       supplemented on July 3, 2001, August                  and its contents are bounded by those
                                                  February 16, 2016. Amendment No. 8                      13 and 17, and October 5, 12, and 19,                 NRC reviewed and approved for CoC
                                                  added the MPC–68M canister, two new                     2001, demonstrated that the thoria rod                1014, Amendment No. 8.
                                                  boiling water reactor (BWR) fuel                        canister was structurally adequate to                    The applicant stated that the cladding
                                                  assembly/array classes, a new                           support the loads during normal lifting               hoop stress for the thoria rods, during
                                                  pressurized-water reactor fuel assembly/                operations, normal and off-normal                     vacuum drying, is similar to the stresses
                                                  array class, and revised Condition No. 3                conditions, as well as during postulated-             expected in uranium dioxide (UO2) rods
                                                  in the certificate to include leak testing              accident conditions.                                  stored in an MPC–68M. The applicant
                                                  of the confinement boundary base                           Based on the NRC staff’s review of the             also stated it does not plan to load high
                                                  material in addition to confinement                     physical characteristics of the thoria                burnup fuel, i.e., fuel with an average
                                                  welds. Amendment 8 also made other                      rods, thoria canister and MPC–68M                     burnup exceeding 45,000 MWD/MTU,
                                                  administrative changes. Thoria rods/                    canister, the NRC staff concludes that                in the MPC–68M that contains the
                                                  assemblies were not considered in                       the proposed storage of thoria rods in an             thoria rod canister. The applicant stated
                                                  Amendment No. 8 for the MPC–68M,                        MPC–68M will be bounded by the                        that this would result in a decay heat
                                                  however they have been approved for                     previously approved structural analysis               below the design basis decay heat and,
                                                  storage in the MPC–68, MPC–68F and                      for MPC–68M because the thoria rods                   therefore a lower design basis fuel
                                                  MPC–68FF in Amendment No. 1.                            and canister limits are the same as those             temperature compared to the value
                                                     The applicant stated that the design                 previously approved in Amendment No.                  reported in Table 4.III.5 of the HI–
                                                  characteristics of the thoria rods in the               1 to CoC 1014. Therefore, the NRC staff               STORM 100 FSAR, Revision 11, during
                                                  exemption request are the same as those                 has reasonable assurance that the                     vacuum drying operations. Based on the
                                                  approved for storage in the MPC–68,                     structural adequacy of the MPC–68M for                lower decay heat and similar expected
                                                  MPC–68F and MPC–68FF. The                               the intended purpose will be                          cladding hoop stress for the thoria rods
                                                  characteristics of these rods are                       maintained, as documented in the NRC                  during vacuum drying, the NRC staff
                                                  specified in CoC No. 1014, Amendment                    staff’s SER for Amendment No. 8 to CoC                finds that the vacuum drying time limits
                                                  No. 8, Revision No. 1, Appendix B,                      1014.                                                 in CoC 1014, Amendment No. 8,
                                                  Table 2.1–1, Section II, ‘‘MPC MODEL:                      Thermal Review for the Requested                   Revision No. 1, Technical
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                                                  MPC–68F,’’ Item A.7 and Section III,                    Exemption: The decay heat per DNPS                    Specifications, which were not
                                                  ‘‘MPC MODEL: MPC–68 and MPC–                            Unit 1 thoria rod canister is less than or            necessary for the MPC–68M in CoC
                                                  68FF,’’ Item A.3. In addition, the                      equal to 115 watts, which is                          1014, Amendment No. 8, Revision No.
                                                  applicant cited the Safety Analysis                     significantly lower than the maximum                  1, are also not necessary for the MPC–
                                                  Report (SAR) for CoC No. 1014,                          allowable decay heat limit of 393 watts               68M with the inclusion of the DNPS
                                                  Amendment No. 8, and the NRC staff’s                    per fuel storage location for damaged                 Unit 1 thoria rod canister. Consistent
                                                  corresponding SER dated May 10, 2012,                   fuel and fuel debris, as specified in                 with EGC’s request, this exemption does
                                                  which documented the NRC staff’s basis                  Amendment No. 8 to CoC 1014. In                       not authorize the loading and storage of


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                                                                              Federal Register / Vol. 81, No. 51 / Wednesday, March 16, 2016 / Notices                                           14137

                                                  high burnup fuel in the MPC–68M if the                  thoria rod canisters were present in the              ‘‘HI–STORM TSAR’’, Holtec Report HI–
                                                  DNPS Unit 1 thoria rod canister is                      MPC, even though only one thoria rod                  951312, Rev. 11, and documented in the
                                                  loaded in the MPC–68M. Accordingly,                     canister exists on the DNPS site.                     NRC staff’s SER dated July 18, 2002,
                                                  the NRC staff finds that the cask loaded                Holtec’s dose rate evaluation showed                  which was the basis for approval of
                                                  with 1 thoria rod canister will continue                that the external dose rate for a HI–                 Amendment No. 1 to CoC No. 1014. In
                                                  to meet applicable thermal                              STORM 100 cask loaded with 68 thoria                  Section 6.4.6 of the TSAR, Holtec shows
                                                  requirements.                                           rod canisters, each with 18 Thoria rods,              that the reactivity of the thoria rods
                                                     Confinement Review for the                           was 17 percent higher than a canister                 remains below that of the design-basis
                                                  Requested Exemption: EGC stated that                    filled with design-basis fuel. In its SER             fuel assembly reactivity, which is
                                                  the design of the MPC–68M                               for approval of Amendment No. 1, the                  summarized in Holtec TSAR Tables
                                                  confinement boundary, which includes                    NRC staff considered the conservatisms                6.1.7 and 6.1.8. The NRC staff did not
                                                  the vent and drain ports, is unchanged                  built into Holtec’s dose rate analysis and            analyze any impact the thoria rods
                                                  by the exemption request. In addition,                  concluded that a single thoria rod                    might have on criticality during its
                                                  EGC stated that the exemption would                     canister would not likely result in a                 review of the Holtec TSAR as the
                                                  not change the short-term cask                          dose rate increase for a MPC–68M                      components important to criticality
                                                  operations, including draining of the                   canister loaded with 67 BWR spent fuel                control in the MPC–68 and MPC–68FF
                                                  MPC, welding of the lid, drying and                     assemblies and a single thoria rod                    remained unchanged from its prior
                                                  backfilling with inert gas, and handling                canister containing up to 18 thoria rods.             review of the HI–STAR Amendment No.
                                                  of the MPC that were approved in                           Subsequently, in its review of                     1. This is not the case with the MPC–
                                                  Amendment No. 8 to CoC No. 1014.                        Amendment 8, the NRC staff reviewed                   68M.
                                                  Since this exemption would not change                   the impact from the MPC–68M basket                       In its June 8, 2015 response to
                                                  the design aspects, including a leak tight              on external dose rates compared to the                additional information, the applicant
                                                  confinement boundary (leak tight is                     borated baskets for the other MPC–68                  cited the NRC staff’s basis for approval
                                                  defined as ≤1 × 1¥7 ref-cc/sec, as                      canisters. Considering that the outer                 of CoC 1014, Amendment No. 8 in its
                                                  defined by American National                            loaded assemblies provide significant                 SER dated May 10, 2012, to support this
                                                  Standards Institute (ANSI) N14.5,                       shielding of the innermost assemblies,                exemption request. The applicant noted
                                                  ‘‘Radioactive Materials—Leakage Tests                   the NRC staff determined that the dose                several advantages that Metamic-HT has
                                                  on Packages for Shipment’’), from those                 rate is dominated by the peripherally                 over older basket designs. Among them
                                                  previously reviewed and approved by                     loaded assemblies. The NRC staff, using               are the inability of the neutron absorber
                                                  the NRC, the confinement                                MicroShield®, calculated dose rates                   material to detach or relocate, and the
                                                  characteristics will continue to be                     with the two different basket materials.              presence of absorber material along the
                                                  adequately maintained.                                  Based on the results of this calculation,             entire length of the basket, rather than
                                                     Shielding Review for the Requested                   the NRC staff found that the canister                 a fixed, discrete section. During its
                                                  Exemption: The NRC staff reviewed the                   and overpack were the components                      review of Amendment No. 8, NRC staff
                                                  exemption request and the applicant’s                   most critical to shielding. Additionally,             noted that the applicant’s analysis
                                                  RAI response. EGC is relying on NRC’s                   in the SER for Amendment No. 8, NRC                   resulted in a large margin to criticality
                                                  previous approval of Amendment Nos.                     staff concluded that Holtec showed that               and concluded that the use of the
                                                  1 and 8 to CoC No. 1014 to conclude                     the shielding provided by the MPC–68M                 existing fuel assemblies authorized in
                                                  that offsite doses from a storage cask                  did not significantly change from the                 the CoC within the Metamic-HT basket
                                                  containing a single thoria rod canister                 MPC–68 canister, since neither the                    in the MPC–68M would remain
                                                  along with 67design basis 6x6 Dresden                   canister shell nor the overpack changed               subcritical.
                                                  Unit 1 fuel assemblies are is the same                  and the Metamic-HT basket would have                     Two prior NRC staff reviews of
                                                  as or bounded by previous analyses and                  negligible impact on external dose rates.             amendments (HI–STORM Amendment
                                                  did not perform any additional analysis                    In prior NRC staff reviews of                      Nos. 1 and 8) have found the Metamic-
                                                  for this exemption. The applicant cites                 Amendment Nos. 1 and 8, the NRC staff                 HT basket in the MPC–68M to be at least
                                                  the shielding analysis of the thoria rods               concluded that the Metamic-HT basket                  as effective as those in the MPC–68 and
                                                  as previously documented in ‘‘HI–                       in the MPC–68M has very little effect on              MPC–68FF. In addition, these reviews
                                                  STORM TSAR,’’ HOLTEC Report HI–                         the external dose rate; and a single                  found that a thoria rod canister is less
                                                  951312, Rev. 11, and approved by the                    thoria rod canister, while unbounded in               reactive than the spent fuel assemblies
                                                  NRC staff in CoC 1014, Amendment No.                    the 2.5–3.0 MeV energy range, will not                currently authorized in CoC 1014. Based
                                                  1 and documented in the NRC staff’s                     impact cask external dose rates.                      on its consideration of these previous
                                                  SER dated July 18, 2002. Sections 5.2.6                 Accordingly, NRC staff has reasonable                 approvals, NRC staff concludes that the
                                                  and 5.4.8 of the Holtec TSAR includes                   assurance that off-site doses from the                presence of a single, thoria rod canister
                                                  Holtec’s analysis of the thoria rods, and               presence of a single, thoria rod canister             in an MPC–68M is bounded by prior
                                                  presents a summary of the neutron and                   in an MPC–68M loaded with design-                     analyses of existing, authorized
                                                  photon sources in Tables 5.2–7, 5.2–19,                 basis fuel with the same characteristics              contents.
                                                  5.2–37, and 5.2–38. EGC stated that the                 as those approved for the MPC–68,                        Review of Common Defense and
                                                  neutron source for the thoria rods                      MPC–68F and MPC–68FF will not                         Security: The NRC staff also considered
                                                  remains below that of the design basis                  increase when compared to a canister                  potential impacts of granting the
                                                  fuel assembly. EGC also stated that the                 loaded with 68 design-basis fuel                      exemption on the common defense and
                                                  photon source for the thoria rods is                    assemblies. Therefore, such a canister                security. The requested exemption is
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                                                  bounded by the design basis fuel                        will continue to meet applicable offsite              not related to any security or common
                                                  assembly except in the 2.5–3.0 MeV                      dose requirements.                                    defense aspect of the DNPS ISFSI,
                                                  energy range. To demonstrate that the                      Criticality Review for the Requested               therefore granting the exemption would
                                                  gamma dose rate from the thoria rods is                 Exemption: The NRC staff reviewed the                 not result in any potential impacts to
                                                  bounded by the design-basis BWR fuel,                   exemption request and the applicant’s                 common defense and security.
                                                  EGC referred to Holtec’s TSAR for                       RAI response. The applicant initially                    Based on its review, the NRC staff has
                                                  Amendment No. 1, which, according to                    only cited the criticality analysis of the            reasonable assurance that in granting
                                                  Holtec, conservatively assumed 68                       thoria rods previously documented in                  the exemption, the storage system will


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                                                  14138                              Federal Register / Vol. 81, No. 51 / Wednesday, March 16, 2016 / Notices

                                                  continue to meet the requirements of 10                              ensure full core discharge capability on                             IV. Conclusions
                                                  CFR part 72 and the offsite dose limits                              schedule, based on its review of EGC’s                                 Accordingly, the Commission has
                                                  of 10 CFR part 20 and, therefore, will                               request, the NRC staff concludes that                                determined that, pursuant to 10 CFR
                                                  not endanger life or property. The NRC                               allowing thoria rods with the same                                   72.7, this exemption is authorized by
                                                  staff also finds that the exemption                                  characteristics as those approved for the                            law, will not endanger life or property
                                                  would not endanger common defense                                    MPC–68, MPC–68F and MPC–68FF as                                      or the common defense and security,
                                                  and security.                                                        an approved content in the MPC–68M                                   and is otherwise in the public interest.
                                                  C. Otherwise in the Public Interest                                  would continue to provide adequate                                   Therefore, the Commission hereby
                                                     In considering whether granting the                               protection of public health and safety.                              grants EGC an exemption from 10 CFR
                                                  exemption is in the public interest, the                             Therefore, granting the exemption is                                 72.212(a)(2), 10 CFR 72.212(b)(3), 10
                                                  NRC staff considered the alternative of                              otherwise in the public interest.                                    CFR 72.212(b)(5)(i), 10 CFR 72.214, and
                                                  not granting the exemption. If the                                                                                                        the portion of 10 CFR 72.212(b)(11) that
                                                                                                                       D. Environmental Considerations
                                                  exemption was not granted, in order to                                                                                                    requires compliance with terms,
                                                  comply with the CoC, the DNPS Unit 1                                    The NRC staff also considered                                     conditions, and specifications of the
                                                  thoria rod canister containing the 18                                whether there would be any significant                               CoC only with regard to storage of DNPS
                                                  thoria rods would not be loaded during                               environmental impacts associated with                                Unit 1 thoria rods with the same
                                                  the 2016 spent fuel loading campaign                                 the exemption. For this proposed action,                             characteristics as those specified for
                                                  (SFLC). The applicant maintains that                                 the NRC staff performed an                                           storage in the MPC–68, MPC–68F and
                                                  loading the thoria rod canister during                               environmental assessment pursuant to                                 MPC–68FF in CoC No. 1014,
                                                  the 2016 DNPS SFLC is part of a                                                                                                           Amendment No. 8, Revision No. 1,
                                                                                                                       10 CFR 51.30. The environmental
                                                  program to ensure full core discharge                                                                                                     Appendix B, Table 2.1–1, Section II,
                                                                                                                       assessment concluded that the proposed
                                                  capability.                                                                                                                               ‘‘MPC MODEL: MPC–68F,’’ Item A.7
                                                                                                                       action would not significantly impact                                and Section III, ‘‘MPC MODEL: MPC–68
                                                     EGC stated that granting the
                                                                                                                       the quality of the human environment.                                and MPC–68FF,’’ Item A.3 in the MPC–
                                                  exemption is in the public interest since
                                                  it will permit storage of the thoria rods                            The NRC staff concluded that the                                     68M using the Holtec® CoC No. 1014,
                                                  in an inherently safe and passive                                    proposed action would not result in any                              Amendment No. 8, Revision No. 1. This
                                                  system. Additionally, EGC stated that                                changes in the types or amounts of any                               exemption does not authorize loading in
                                                  granting the exemption would permit                                  radiological or non-radiological                                     a canister with other spent fuel which
                                                  this storage without the burden and                                  effluents that may be released offsite,                              has an average burnup exceeding 45,000
                                                  impact of requesting an amendment to                                 and there is no significant increase in                              MWD/MTU.
                                                  the CoC. Not granting the exemption                                  occupational or public radiation
                                                                                                                       exposure because of the proposed                                     V. Availability of Documents
                                                  would require Holtec to submit an
                                                  amendment to the CoC, which would                                    action. The Environmental Assessment                                   The documents identified in the
                                                  delay the DNPS program to ensure full                                and the Finding of No Significant                                    following table are available to
                                                  core discharge capability and impact                                 Impact was published on March 4, 2016                                interested persons through one or more
                                                  future loadings. In addition to allowing                             (81 FR 11603).                                                       of the methods indicated in the
                                                  DNPS to continue with its program to                                                                                                      ADDRESSES section.

                                                                                                                           Document                                                                                      ADAMS Accession No.

                                                  Exelon Generation Company (EGC) application dated January 29, 2015 ....................................................................                              ML15029A334.
                                                  EGC supplement dated June 8, 2015 ............................................................................................................................       ML15159A745.
                                                  CoC 1014 Amendment 8, Revision 1 .............................................................................................................................       ML16041A233.
                                                  Amendment No. 8 CoC and SER issued on May 10, 2012 ..........................................................................................                        ML12132A028.
                                                  Amendment No 8 correction (CoC and SER) issued on November 12, 2012 ..............................................................                                   ML12213A203.
                                                  Amendment No. 8, Revision No. 1 issued on February 10, 2016 .................................................................................                        ML16041A233.
                                                  ‘‘HI–STORM Topical Safety Analysis Report (TSAR),’’ Holtec Report HI–951312, Rev. 11 (Holtec amendment 1 re-                                                         ML003748149,
                                                     quest) dated August 31, 2000.                                                                                                                                       ML072420266,
                                                                                                                                                                                                                         ML003748010,
                                                                                                                                                                                                                         ML003747975, and
                                                                                                                                                                                                                         ML003747995.
                                                  July 3, 2001 supplement to Holtec amendment 1 request ............................................................................................                   ML011900259.
                                                  August 13, 2001 supplement to Holtec amendment 1 request .....................................................................................                       ML012260436.
                                                  August 17, 2001 supplement to Holtec amendment 1 request .....................................................................................                       ML012330523.
                                                  October 5, 2001, supplement to Holtec amendment 1 request .....................................................................................                      ML012830522.
                                                  October 12, 2001, supplement to Holtec amendment 1 request ...................................................................................                       ML012900007.
                                                  October 19, 2001, supplement to Holtec amendment 1 request ...................................................................................                       ML020150094.
                                                  NRC’s request for additional information dated May 8, 2015 ........................................................................................                  ML15128A088.
                                                  Amendment No. 1 to CoC 1014 .....................................................................................................................................    ML022000176.
                                                  HI–STORM 100 FSAR, Revision 11 ..............................................................................................................................        ML13246A040.
                                                  ANSI N14.5, ‘‘Radioactive Materials—Leakage Tests on Packages for Shipment’’ .....................................................                                   Accessible from American
                                                                                                                                                                                                                         National Standards Insti-
                                                                                                                                                                                                                         tute.
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                                                  HI–STAR Amendment No. 1 ..........................................................................................................................................   ML003780760.




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                                                                              Federal Register / Vol. 81, No. 51 / Wednesday, March 16, 2016 / Notices                                           14139

                                                     The exemption is effective upon                      please contact the NRC’s Public                       subject of collection; and (4) ways to
                                                  issuance.                                               Document Room (PDR) reference staff at                minimize the burden of collections on
                                                    Dated at Rockville, Maryland, this 8th day            1–800–397–4209, 301–415–4737, or by                   respondents, including the use of
                                                  of March, 2016.                                         email to pdr.resource@nrc.gov. The                    automated collection techniques or
                                                    For the Nuclear Regulatory Commission.                ADAMS accession number for each                       other forms of information technology.
                                                  Steve Ruffin,                                           document referenced in this document                  Comments to the RRB or OIRA must
                                                  Acting Branch Chief, Spent Fuel Licensing               (if that document is available in                     contain the OMB control number of the
                                                  Branch, Division of Spent Fuel Management,              ADAMS) is provided the first time that                ICR. For proper consideration of your
                                                  Office of Nuclear Material Safetyand                    a document is referenced.                             comments, it is best if the RRB and
                                                  Safeguards.                                                • NRC’s PDR: You may examine and                   OIRA receive them within 30 days of
                                                  [FR Doc. 2016–05955 Filed 3–15–16; 8:45 am]             purchase copies of public documents at                the publication date.
                                                  BILLING CODE 7590–01–P                                  the NRC’s PDR, Room O1–F21, One                          1. Title and purpose of information
                                                                                                          White Flint North, 11555 Rockville                    collection: Employer Reporting; 3220–
                                                                                                          Pike, Rockville, Maryland 20852.                      0005. Under Section 9 of the Railroad
                                                  NUCLEAR REGULATORY                                      FOR FURTHER INFORMATION CONTACT:                      Retirement Act (RRA), and Section 6 of
                                                  COMMISSION                                              Robert Pettis, Office of Nuclear Reactor              the Railroad Unemployment Insurance
                                                                                                          Regulation, telephone: 301–415–3214;                  Act (RUIA), railroad employers are
                                                  [NRC–2011–0011]                                                                                               required to submit reports of employee
                                                                                                          email: Robert.Pettis@nrc.gov; Kenneth
                                                                                                          Karwoski, Office of Nuclear Reactor                   service and compensation to the RRB as
                                                  Criteria and Design Features for
                                                                                                          Regulation, telephone: 301–415–2752;                  needed for administering the RRA and
                                                  Inspection of Water-Control Structures
                                                                                                          email: Kenneth.Karwoski@nrc.gov; or                   RUIA. To pay benefits due on a
                                                  Associated With Nuclear Power Plants;                                                                         deceased employee’s earnings records or
                                                  Correction                                              Mark Orr, Office of Nuclear Regulatory
                                                                                                          Research, telephone: 301–415–6003;                    determine entitlement to, and amount of
                                                  AGENCY:  Nuclear Regulatory                             email: Mark.Orr@nrc.gov. All are on the               annuity applied for, it is necessary at
                                                  Commission.                                             staff of the U.S. Nuclear Regulatory                  times to obtain from railroad employers
                                                  ACTION: Regulatory Guide; issuance;                     Commission, Washington, DC 20555–                     current (lag) service and compensation
                                                  correction.                                             0001.                                                 not yet reported to the RRB through the
                                                                                                                                                                annual reporting process. The reporting
                                                                                                          SUPPLEMENTARY INFORMATION: In the FR                  requirements are specified in 20 CFR
                                                  SUMMARY:   The U.S. Nuclear Regulatory
                                                  Commission (NRC) is correcting a notice                 on February 18, 2016, in FR Doc. 2016–                209.6 and 209.7.
                                                  that was published in the Federal                       03346, on page 8254, in the third                        The RRB currently utilizes Form G–
                                                  Register (FR) on February 18, 2016,                     column, the last line of the first                    88A.1, Notice of Retirement and
                                                  regarding the issuance of Revision 2 of                 paragraph, correct ‘‘ML093060317’’ to                 Verification of Date Last Worked, Form
                                                  Regulatory Guide (RG) 1.127, ‘‘Criteria                 read ‘‘ML102380594.’’                                 G–88A.2, Notice of Retirement and
                                                  and Design Features for Inspection of                      Dated at Rockville, Maryland this 10th day         Request for Service Needed for
                                                  Water-Control Structures Associated                     of March, 2016.                                       Eligibility, and Form AA–12, Notice of
                                                  with Nuclear Power Plants.’’ This action                   For the Nuclear Regulatory Commission.             Death and Compensation, to obtain the
                                                  is necessary to correct an ADAMS                        Thomas H. Boyce,                                      required lag service and related
                                                  accession number.                                       Chief, Regulatory Guidance and Generic                information from railroad employers.
                                                                                                          Issues Branch, Division of Engineering, Office        Form G–88A.1 is sent by the RRB via a
                                                  DATES: The correction is effective March
                                                                                                          of Nuclear Regulatory Research.                       computer-generated listing or
                                                  16, 2016.                                                                                                     transmitted electronically via the RRB’s
                                                                                                          [FR Doc. 2016–05909 Filed 3–15–16; 8:45 am]
                                                  ADDRESSES: Please refer to Docket ID                                                                          Employer Reporting System (ERS) to
                                                                                                          BILLING CODE 7590–01–P
                                                  NRC–2011–0011 when contacting the                                                                             employers. ERS consists of a series of
                                                  NRC about the availability of                                                                                 screens with completion instructions
                                                  information regarding this document.                                                                          and collects essentially the same
                                                  You may obtain publicly-available                       RAILROAD RETIREMENT BOARD                             information as the approved manual
                                                  information related to this document                                                                          version. Form G–88A.1 is used for the
                                                  using any of the following methods:                     Agency Forms Submitted for OMB
                                                                                                          Review, Request for Comments                          specific purpose of verifying
                                                     • Federal Rulemaking Web site: Go to                                                                       information previously provided to the
                                                  http://www.regulations.gov and search                     Summary: In accordance with the                     RRB regarding the date last worked by
                                                  for Docket ID NRC–2011–0011. Address                    Paperwork Reduction Act of 1995 (44                   an employee. If the information is
                                                  questions about NRC dockets to Carol                    U.S.C. Chapter 35), the Railroad                      correct, the employer need not reply. If
                                                  Gallagher; telephone: 301–415–3463;                     Retirement Board (RRB) is forwarding                  the information is incorrect, the
                                                  email: Carol.Gallagher@nrc.gov. For                     an Information Collection Request (ICR)               employer is asked to provide corrected
                                                  technical questions, contact the                        to the Office of Information and                      information. Form G–88A.2 is used by
                                                  individual(s) listed in the FOR FURTHER                 Regulatory Affairs (OIRA), Office of                  the RRB to secure lag service and
                                                  INFORMATION CONTACT section of this                     Management and Budget (OMB). Our                      compensation information when it is
                                                  document.                                               ICR describes the information we seek                 needed to determine benefit eligibility.
                                                     • NRC’s Agencywide Documents                         to collect from the public. Review and                Form AA–12 obtains a report of lag
                                                  Access and Management System                            approval by OIRA ensures that we                      service and compensation from the last
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                                                  (ADAMS): You may obtain publicly-                       impose appropriate paperwork burdens.                 railroad employer of a deceased
                                                  available documents online in the                         The RRB invites comments on the                     employee. This report covers the lag
                                                  ADAMS Public Documents collection at                    proposed collections of information to                period between the date of the latest
                                                  http://www.nrc.gov/reading-rm/                          determine (1) the practical utility of the            record of employment processed by the
                                                  adams.html. To begin the search, select                 collections; (2) the accuracy of the                  RRB and the date an employee last
                                                  ‘‘ADAMS Public Documents’’ and then                     estimated burden of the collections; (3)              worked, the date of death or the date the
                                                  select ‘‘Begin Web-based ADAMS                          ways to enhance the quality, utility, and             employee may have been entitled to
                                                  Search.’’ For problems with ADAMS,                      clarity of the information that is the                benefits under the Social Security Act.


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Document Created: 2016-03-15 23:44:23
Document Modified: 2016-03-15 23:44:23
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.
DatesMarch 16, 2016.
ContactBernard White, Office of Nuclear Material Safety and Safeguards, U.S. Nuclear Regulatory Commission, Washington DC 20555-0001; telephone: 301-415-6577; email: [email protected]
FR Citation81 FR 14135 

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