Operational Leakage
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Issuing agencies
Abstract
The U.S. Nuclear Regulatory Commission (NRC) is issuing Regulatory Issue Summary (RIS) 2022-02, "Operational Leakage." This RIS clarifies the NRC staff's position on the NRC requirements for evaluation, control, and treatment of operational leakage in systems required to be operable by plant technical specifications (TS). This RIS is intended for all holders of operating licenses and combined licenses for nuclear power reactors, except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor vessel. This RIS emphasizes that operational leakage must be addressed in the same manner as leakage detected during an American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code, Section XI, pressure test. That is, when operational leakage is found in a system that is within the scope of ASME BPV Code, Section XI, and is required to be operable by plant TS, the component must be evaluated by the licensee for operability. Structural integrity determinations must be conducted in accordance with the applicable provisions of the original construction code, the ASME BPVC, Section XI, or otherwise addressed through authorized methods.
Full Text
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<title>Federal Register, Volume 87 Issue 219 (Tuesday, November 15, 2022)</title>
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[Federal Register Volume 87, Number 219 (Tuesday, November 15, 2022)]
[Rules and Regulations]
[Pages 68335-68336]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-24750]
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NUCLEAR REGULATORY COMMISSION
10 CFR Chapter 1
[NRC-2021-0173]
Operational Leakage
AGENCY: Nuclear Regulatory Commission.
ACTION: Regulatory issue summary; issuance.
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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing
Regulatory Issue Summary (RIS) 2022-02, ``Operational Leakage.'' This
RIS clarifies the NRC staff's position on the NRC requirements for
evaluation, control, and treatment of operational leakage in systems
required to be operable by plant technical specifications (TS). This
RIS is intended for all holders of operating licenses and combined
licenses for nuclear power reactors, except those who have permanently
ceased operations and have certified that fuel has been permanently
removed from the reactor vessel. This RIS emphasizes that operational
leakage must be addressed in the same manner as leakage detected during
an American Society of Mechanical Engineers (ASME) Boiler and Pressure
Vessel (BPV) Code, Section XI, pressure test. That is, when operational
leakage is found in a system that is within the scope of ASME BPV Code,
Section XI, and is required to be operable by plant TS, the component
must be evaluated by the licensee for operability. Structural integrity
determinations must be conducted in accordance with the applicable
provisions of the original construction code, the ASME BPVC, Section
XI, or otherwise addressed through authorized methods.
DATES: The RIS is available as of November 15, 2022.
ADDRESSES: Please refer to Docket ID NRC-2021-0173 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:
<bullet> Federal Rulemaking Website: Go to <a href="https://www.regulations.gov">https://www.regulations.gov</a> and search for Docket ID NRC-2021-0173. Address
questions about Docket IDs in <a href="http://Regulations.gov">Regulations.gov</a> to Stacy Schumann;
telephone: 301-415-0624; email: <a href="/cdn-cgi/l/email-protection#e8bb9c898b91c6bb8b809d85898686a8869a8bc68f879e"><span class="__cf_email__" data-cfemail="c99abda8aab0e79aaaa1bca4a8a7a789a7bbaae7aea6bf">[email protected]</span></a>. For technical
questions, contact the individual listed in the FOR FURTHER INFORMATION
CONTACT section of this document.
<bullet> NRC's Agencywide Documents Access and Management System
(ADAMS): You may obtain publicly available documents online in the
ADAMS Public Documents collection at <a href="https://www.nrc.gov/reading-rm/adams.html">https://www.nrc.gov/reading-rm/adams.html</a>. To begin the search, 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 <a href="/cdn-cgi/l/email-protection#c5958197eb97a0b6aab0b7a6a085abb7a6eba2aab3"><span class="__cf_email__" data-cfemail="f2a2b6a0dca097819d87809197b29c8091dc959d84">[email protected]</span></a>. The ADAMS accession number for each
document referenced (if it is available in ADAMS) is provided the first
time that it is mentioned in this document.
<bullet> NRC's PDR: You may examine and purchase copies of public
documents, by appointment, at the NRC's PDR,
[[Page 68336]]
Room P1 B35, One White Flint North, 11555 Rockville Pike, Rockville,
Maryland 20852. To make an appointment to visit the PDR, please send an
email to <a href="/cdn-cgi/l/email-protection#b2e2f6e09ce0d7c1ddc7c0d1d7f2dcc0d19cd5ddc4"><span class="__cf_email__" data-cfemail="104054423e4275637f65627375507e62733e777f66">[email protected]</span></a> or call 1-800-397-4209 or 301-415-4737,
between 8:00 a.m. and 4:00 p.m. Eastern Time (ET), Monday through
Friday, except Federal holidays.
<bullet> This RIS is also available on the NRC's public website at
<a href="https://www.nrc.gov/reading-rm/doc-collections/gen-comm/reg-issues/">https://www.nrc.gov/reading-rm/doc-collections/gen-comm/reg-issues/</a>
(select ``2022'' and then select ``2022-02'').
FOR FURTHER INFORMATION CONTACT: Jay Collins, Office of Nuclear Reactor
Regulation, U.S. Nuclear Regulatory Commission, Washington, DC 20555-
0001, telephone: 301-415-4038, email: <a href="/cdn-cgi/l/email-protection#d993b8a0f79ab6b5b5b0b7aa99b7abbaf7beb6af"><span class="__cf_email__" data-cfemail="703a11095e331f1c1c191e03301e02135e171f06">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION: The NRC published a notice of opportunity
for public comment on this RIS in the Federal Register on January 14,
2022 (87 FR 2361). The agency received comments from seven commenters.
The staff considered all comments, which resulted in the addition of a
paragraph to directly address the commentor's example of operational
leakage from drains or instrument lines. The evaluation of these
comments and the resulting changes to the RIS are discussed in a
publicly available memorandum which is available in ADAMS under
Accession No. ML22167A003.
RIS 2022-02, ``Operational Leakage'' is available in ADAMS under
Accession No. ML22167A002.
As noted in the Federal Register on May 8, 2018 (83 FR 20858), this
document is being published in the Rules section of the Federal
Register to comply with publication requirements under 1 CFR chapter I.
Dated: November 8, 2022.
For the Nuclear Regulatory Commission.
Lisa M. Regner,
Chief, Generic Communications and Operating Experience Branch, Division
of Reactor Oversight, Office of Nuclear Reactor Regulation.
[FR Doc. 2022-24750 Filed 11-14-22; 8:45 am]
BILLING CODE 7590-01-P
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