Testing of Open Secondary Window-Type Current Transformers-Test Plan, 46061-46062 [2015-18997]
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Federal Register / Vol. 80, No. 148 / Monday, August 3, 2015 / Notices
compatibility levels for rule
requirements?
Applicability to General Licensees
The applicability of financial
planning requirements to licensees
possessing generally licensed sealed
sources should be considered.
According to the 2014 Disused Sources
Working Group report, there are at least
a few licensees who possess generally
licensed sources in quantities of
concern.
Question 6: When necessary, what
mechanism should be used to
administer financial planning
requirements on general licensees?
mstockstill on DSK4VPTVN1PROD with NOTICES
Characteristics and Qualifications of the
Fund Custodian
Another consideration in establishing
financial planning requirements is how
to determine the proper custodian for
the fund that is to be earmarked for
disposition.
Question 7: What are the ideal
characteristics and qualifications for an
entity that will act as the custodian for
any funds earmarked for long-term
management of disused sealed sources?
For instance, what characteristics and
qualifications should be taken into
consideration regarding the custodian’s
relationship to the licensee (e.g., the
ability of the custodian to access the
funds, or the custodian’s independent
financial viability)? In the event that
there is a residual amount remaining in
the fund following payment of
disposition cost, what should be the fate
of the residual funds?
Tracking
For licensees possessing Category 1 or
2 radioactive sealed sources, regulators
can access the National Source Tracking
System (NSTS) to determine the number
and type of licensees that would be
potentially impacted by end-of-life
financial assurance requirements. For
new sources, source manufacturers or
suppliers could be contacted to
determine how they would be impacted
by any new requirements. However, it
may be more difficult to implement
requirements and ensure accountability
regarding sources that are not tracked in
the NSTS (e.g. Category 3 and lower).
Question 8: What are the key
characteristics of a tracking system for
byproduct material (sealed sources)
subject to financial planning
requirements? Which of these
characteristics are not available as part
of the NSTS?
The topical areas and questions that
the NRC staff has identified above are
consequential, but not exhaustive.
Varied perspectives from a broad range
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18:35 Jul 31, 2015
Jkt 235001
of stakeholders will be beneficial.
Further, NRC staff anticipates that
stakeholders will identify and provide
their perspectives on additional issues
they identify that are relevant to
financial planning for management of
disused or unwanted radioactive
byproduct material.
Based on the results of the expanded
byproduct material financial scoping
study, staff will compile a report with
study results and recommendations for
next steps to be provided to the
Commission in spring 2016. Staff
recommendations could include options
such as limited rulemaking, broad scope
rulemaking, advance notice of proposed
rulemaking, development of guidance,
issuance of a generic communication, or
no action.
IV. Topic-Specific Public Meeting
The NRC will convene a topic-specific
public meeting in Rockville, MD, in
early fall 2015. The public meeting will
include a webinar and teleconference
for the convenience of participants who
find attendance inconvenient or
prohibitive. A meeting notice will be
posted to the NRC’s public Web site at
https://meetings.nrc.gov/pmns/mtg no
fewer than 10 days prior to the meeting
providing the date, time, and venue of
the meeting, as well as remote
participation instructions. A transcript
of the public meeting will be made
publicly available in ADAMS, as well as
posted on the Federal Rulemaking Web
site at https://www.regulations.gov,
under Docket ID NRC–2015–0182. The
Federal Rulemaking Web site allows
you to receive alerts when changes or
additions occur in a docket folder. To
subscribe: (1) Navigate to the docket
folder (NRC–2015–0182); (2) click the
‘‘Email Alert’’ link; and (3) enter your
email address and select how frequently
you would like to receive emails (daily,
weekly, or monthly).
The NRC staff will use the
information gathered from the public
meeting to supplement information
gathered in response to this FRN and
other sources to prepare a report on
byproduct material financial scoping
study for the Commission, which will
include the NRC staff’s
recommendations for next steps.
Dated at Rockville, MD this 24th day of
July 2015.
For the Nuclear Regulatory Commission.
Andrew Persinko,
Deputy Director, Division of
Decommissioning, Uranium Recovery, and
Waste Programs, Office of Nuclear Material
Safety and Safeguards.
[FR Doc. 2015–18891 Filed 7–31–15; 8:45 am]
BILLING CODE 7590–01–P
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46061
NUCLEAR REGULATORY
COMMISSION
[NRC–2015–0183]
Testing of Open Secondary WindowType Current Transformers—Test Plan
Nuclear Regulatory
Commission.
ACTION: Draft test plan; request for
comment.
AGENCY:
The U.S. Nuclear Regulatory
Commission (NRC) is issuing for public
comment a proposed draft test plan,
‘‘Testing of Open Secondary WindowType Current Transformers—Test Plan.’’
The purpose of this testing is to better
understand the following scenario: Will
open circuiting of the secondary circuit
of a current transformer (CT), which is
operating within its rated continuous
primary current limits, result in an
excessively high voltage in the
secondary circuit sufficient to start a fire
in the form of explosion or arcing in the
circuit’s insulation at the location of the
CT itself or at some other location in the
secondary circuit?
DATES: Submit comments by September
2, 2015. Comments received after this
date will be considered if it is practical
to do so, but the Commission is able to
ensure consideration only for comments
received before this date.
ADDRESSES: You may submit comments
by any of the following methods (unless
this document describes a different
method for submitting comments on a
specific subject):
• Federal Rulemaking Web site: Go to
https://www.regulations.gov and search
for Docket ID NRC–2015–0183. Address
questions about NRC dockets to Carol
Gallagher; telephone: 301–415–3463;
email: Carol.Gallagher@nrc.gov. For
technical questions, contact the
individual listed in the FOR FURTHER
INFORMATION CONTACT section of this
document.
• Mail comments to: Cindy Bladey,
Office of Administration, Mail Stop:
OWFN–12–H08, U.S. Nuclear
Regulatory Commission, Washington,
DC 20555–0001.
For additional direction on obtaining
information and submitting comments,
see ‘‘Obtaining Information and
Submitting Comments’’ in the
SUPPLEMENTARY INFORMATION section of
this document.
FOR FURTHER INFORMATION CONTACT:
Shivani Mehta, Office of Nuclear
Regulatory Research, U.S. Nuclear
Regulatory Commission, Washington,
DC 20555–0001; telephone: 301–415–
0860, email: Shivani.Mehta@nrc.gov.
SUPPLEMENTARY INFORMATION:
SUMMARY:
E:\FR\FM\03AUN1.SGM
03AUN1
46062
Federal Register / Vol. 80, No. 148 / Monday, August 3, 2015 / Notices
I. Obtaining Information and
Submitting Comments
A. Obtaining Information
Please refer to Docket ID NRC–2015–
0183 when contacting the NRC about
the availability of information for this
action. You may obtain publiclyavailable information related to this
action by any of the following methods:
• Federal Rulemaking Web site: Go to
https://www.regulations.gov and search
for Docket ID NRC–2015–0183.
• NRC’s Agencywide Documents
Access and Management System
(ADAMS): You may obtain publiclyavailable documents online in the
ADAMS Public Documents collection at
https://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 pdr.resource@nrc.gov. The
proposed draft test plan, ‘‘Testing of
Open Secondary Window-Type Current
Transformers—Test Plan’’ is available in
ADAMS under Accession No.
ML15203A228.
• 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.
mstockstill on DSK4VPTVN1PROD with NOTICES
B. Submitting Comments
Please include Docket ID NRC–2015–
0183 in your comment submission.
The NRC cautions you not to include
identifying or contact information that
you do not want to be publicly
disclosed in your comment submission.
The NRC will post all comment
submissions at https://
www.regulations.gov as well as enter the
comment submissions into ADAMS.
The NRC does not routinely edit
comment submissions to remove
identifying or contact information.
If you are requesting or aggregating
comments from other persons for
submission to the NRC, then you should
inform those persons not to include
identifying or contact information that
they do not want to be publicly
disclosed in their comment submission.
Your request should state that the NRC
does not routinely edit comment
submissions to remove such information
before making the comment
submissions available to the public or
entering the comment submissions into
ADAMS.
VerDate Sep<11>2014
18:35 Jul 31, 2015
Jkt 235001
II. Discussion
The NRC is issuing for public
comment a proposed draft test plan. The
purpose of this test program is to better
understand and obtain information to
form a technical basis for assessing the
propensity of a secondary fire or damage
to the secondary side circuit or
components as a result of an opencircuited current transformer (CT)
secondary winding. Specifically, the test
program will allow investigation of the
high-voltage in the secondary circuit to
determine if it is sufficient to induce a
fire in the circuit’s insulation at the CT
location or within the secondary circuit.
The NRC is seeking public comment
in order to receive feedback from the
widest range of interested parties and to
ensure that all information relevant to
developing this document is available to
the NRC staff. This document is issued
for comment only and is not intended
for interim use. The NRC will review
public comments received on the
documents, incorporate suggested
changes as necessary, and make the
final test plan available to the public
through ADAMS and https://
www.regulations.gov at Docket ID NRC–
2015–0183, and will be documented in
the final test report. No responses will
be provided to specific commenters in
regards to the disposition of their
comments.
Current transformers (CTs) are widely
used to monitor the current at strategic
locations of electrical power
distribution systems in nuclear power
plants (NPPs). The CTs provide
isolation from the high-voltage primary,
and step-down the magnitude of the
measured current to a value that can be
safely handled by the monitoring
instruments. Thus, they are designed to
measure the current in alternating
current (AC) power systems (generally
three-phase systems) in their primary
winding and transform this current into
a representative low secondary current
for instrumentation used for remote
readout of the current. An open-circuit
in a CT’s secondary winding can cause
high voltages on the secondary circuit as
the CT attempts to maintain the current
relationship dictated by the
transformer’s winding turns ratio. The
resulting high voltage condition in the
secondary circuit from an opencircuited CT introduces a potential
failure mode that warrants further
investigation as part of the final
resolution of circuit failure issues
associated with the fire protection
strategies at nuclear power plants.
Specifically, an open circuit on a high
voltage CT circuit may result in
secondary damage, possibly resulting in
PO 00000
Frm 00131
Fmt 4703
Sfmt 4703
the occurrence of an additional fire in
the location of the CT itself or at a
location remote to the CT. This potential
event is described in Section 3.5.2.1 of
the NEI 00–01, Revision 2 (ADAMS
Accession No. ML091770265), and
endorsed by Regulatory Guide 1.189,
Revision 2 (ADAMS under Accession
No. ML092580550).
Accordingly, the purpose of this test
program is to better understand and
obtain information to form a technical
basis for assessing the propensity of a
secondary fire or damage to the
secondary side circuit or components
under an open-circuited CT secondary
winding. Specifically, the test program
will allow investigation of the highvoltage in the secondary circuit to
determine if it is sufficient to induce a
fire in the circuit’s insulation at the CT
location or within the secondary circuit.
Dated at Rockville, Maryland, this 27th day
of July 2015.
For the Nuclear Regulatory Commission.
Felix Gonzalez,
Acting Chief, Fire Research Branch, Division
of Risk Analysis, Office of Nuclear Regulatory
Research.
[FR Doc. 2015–18997 Filed 7–31–15; 8:45 am]
BILLING CODE 7590–01–P
NUCLEAR REGULATORY
COMMISSION
[Docket Nos. 50–373 and 50–374; NRC–2
015–0180]
Exelon Generation Company, LLC;
LaSalle County Station, Units 1 and 2
Nuclear Regulatory
Commission.
ACTION: Environmental assessment and
finding of no significant impact;
issuance.
AGENCY:
The U.S. Nuclear Regulatory
Commission (NRC) is considering
issuance of amendments to Facility
Operating License Nos. NPF–11 and
NPF–18 issued to Exelon Generation
Company, LLC (Exelon, the licensee) for
operation of LaSalle County Station
(LSCS), Units 1 and 2, located in LaSalle
County, Illinois. The proposed
amendment would revise the maximum
allowable technical specification (TS)
temperature of the ultimate heat sink for
the plant. The NRC staff is issuing a
final Environmental Assessment (EA)
and Finding of No Significant Impact
(FONSI) associated with the proposed
license amendments.
DATES: The environmental assessment
and finding of no significant impact
referenced in this document is available
on August 3, 2015.
SUMMARY:
E:\FR\FM\03AUN1.SGM
03AUN1
Agencies
[Federal Register Volume 80, Number 148 (Monday, August 3, 2015)]
[Notices]
[Pages 46061-46062]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-18997]
-----------------------------------------------------------------------
NUCLEAR REGULATORY COMMISSION
[NRC-2015-0183]
Testing of Open Secondary Window-Type Current Transformers--Test
Plan
AGENCY: Nuclear Regulatory Commission.
ACTION: Draft test plan; request for comment.
-----------------------------------------------------------------------
SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing for
public comment a proposed draft test plan, ``Testing of Open Secondary
Window-Type Current Transformers--Test Plan.'' The purpose of this
testing is to better understand the following scenario: Will open
circuiting of the secondary circuit of a current transformer (CT),
which is operating within its rated continuous primary current limits,
result in an excessively high voltage in the secondary circuit
sufficient to start a fire in the form of explosion or arcing in the
circuit's insulation at the location of the CT itself or at some other
location in the secondary circuit?
DATES: Submit comments by September 2, 2015. Comments received after
this date will be considered if it is practical to do so, but the
Commission is able to ensure consideration only for comments received
before this date.
ADDRESSES: You may submit comments by any of the following methods
(unless this document describes a different method for submitting
comments on a specific subject):
Federal Rulemaking Web site: Go to https://www.regulations.gov and search for Docket ID NRC-2015-0183. Address
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: Carol.Gallagher@nrc.gov. For technical questions, contact
the individual listed in the FOR FURTHER INFORMATION CONTACT section of
this document.
Mail comments to: Cindy Bladey, Office of Administration,
Mail Stop: OWFN-12-H08, U.S. Nuclear Regulatory Commission, Washington,
DC 20555-0001.
For additional direction on obtaining information and submitting
comments, see ``Obtaining Information and Submitting Comments'' in the
SUPPLEMENTARY INFORMATION section of this document.
FOR FURTHER INFORMATION CONTACT: Shivani Mehta, Office of Nuclear
Regulatory Research, U.S. Nuclear Regulatory Commission, Washington, DC
20555-0001; telephone: 301-415-0860, email: Shivani.Mehta@nrc.gov.
SUPPLEMENTARY INFORMATION:
[[Page 46062]]
I. Obtaining Information and Submitting Comments
A. Obtaining Information
Please refer to Docket ID NRC-2015-0183 when contacting the NRC
about the availability of information for this action. You may obtain
publicly-available information related to this action by any of the
following methods:
Federal Rulemaking Web site: Go to https://www.regulations.gov and search for Docket ID NRC-2015-0183.
NRC's Agencywide Documents Access and Management System
(ADAMS): You may obtain publicly-available documents online in the
ADAMS Public Documents collection at https://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 pdr.resource@nrc.gov. The
proposed draft test plan, ``Testing of Open Secondary Window-Type
Current Transformers--Test Plan'' is available in ADAMS under Accession
No. ML15203A228.
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.
B. Submitting Comments
Please include Docket ID NRC-2015-0183 in your comment submission.
The NRC cautions you not to include identifying or contact
information that you do not want to be publicly disclosed in your
comment submission. The NRC will post all comment submissions at https://www.regulations.gov as well as enter the comment submissions into
ADAMS. The NRC does not routinely edit comment submissions to remove
identifying or contact information.
If you are requesting or aggregating comments from other persons
for submission to the NRC, then you should inform those persons not to
include identifying or contact information that they do not want to be
publicly disclosed in their comment submission. Your request should
state that the NRC does not routinely edit comment submissions to
remove such information before making the comment submissions available
to the public or entering the comment submissions into ADAMS.
II. Discussion
The NRC is issuing for public comment a proposed draft test plan.
The purpose of this test program is to better understand and obtain
information to form a technical basis for assessing the propensity of a
secondary fire or damage to the secondary side circuit or components as
a result of an open-circuited current transformer (CT) secondary
winding. Specifically, the test program will allow investigation of the
high-voltage in the secondary circuit to determine if it is sufficient
to induce a fire in the circuit's insulation at the CT location or
within the secondary circuit.
The NRC is seeking public comment in order to receive feedback from
the widest range of interested parties and to ensure that all
information relevant to developing this document is available to the
NRC staff. This document is issued for comment only and is not intended
for interim use. The NRC will review public comments received on the
documents, incorporate suggested changes as necessary, and make the
final test plan available to the public through ADAMS and https://www.regulations.gov at Docket ID NRC-2015-0183, and will be documented
in the final test report. No responses will be provided to specific
commenters in regards to the disposition of their comments.
Current transformers (CTs) are widely used to monitor the current
at strategic locations of electrical power distribution systems in
nuclear power plants (NPPs). The CTs provide isolation from the high-
voltage primary, and step-down the magnitude of the measured current to
a value that can be safely handled by the monitoring instruments. Thus,
they are designed to measure the current in alternating current (AC)
power systems (generally three-phase systems) in their primary winding
and transform this current into a representative low secondary current
for instrumentation used for remote readout of the current. An open-
circuit in a CT's secondary winding can cause high voltages on the
secondary circuit as the CT attempts to maintain the current
relationship dictated by the transformer's winding turns ratio. The
resulting high voltage condition in the secondary circuit from an open-
circuited CT introduces a potential failure mode that warrants further
investigation as part of the final resolution of circuit failure issues
associated with the fire protection strategies at nuclear power plants.
Specifically, an open circuit on a high voltage CT circuit may result
in secondary damage, possibly resulting in the occurrence of an
additional fire in the location of the CT itself or at a location
remote to the CT. This potential event is described in Section 3.5.2.1
of the NEI 00-01, Revision 2 (ADAMS Accession No. ML091770265), and
endorsed by Regulatory Guide 1.189, Revision 2 (ADAMS under Accession
No. ML092580550).
Accordingly, the purpose of this test program is to better
understand and obtain information to form a technical basis for
assessing the propensity of a secondary fire or damage to the secondary
side circuit or components under an open-circuited CT secondary
winding. Specifically, the test program will allow investigation of the
high-voltage in the secondary circuit to determine if it is sufficient
to induce a fire in the circuit's insulation at the CT location or
within the secondary circuit.
Dated at Rockville, Maryland, this 27th day of July 2015.
For the Nuclear Regulatory Commission.
Felix Gonzalez,
Acting Chief, Fire Research Branch, Division of Risk Analysis, Office
of Nuclear Regulatory Research.
[FR Doc. 2015-18997 Filed 7-31-15; 8:45 am]
BILLING CODE 7590-01-P