Setpoints for Safety-Related Instrumentation, 49685-49687 [2020-17763]

Download as PDF Federal Register / Vol. 85, No. 158 / Friday, August 14, 2020 / Notices This meeting will be held by videoconference organized through the National Science Foundation. PLACE: NATIONAL SCIENCE FOUNDATION Sunshine Act Meeting; National Science Board STATUS: The National Science Board (NSB), pursuant to NSF regulations (45 CFR part 614), the National Science Foundation Act, as amended (42 U.S.C. 1862n–5), and the Government in the Sunshine Act (5 U.S.C. 552b), hereby gives notice of the scheduling of a teleconference for the transaction of National Science Board business, as follows: Closed teleconference of the Committee on Strategy (CS) of the National Science Board, to be held Wednesday, August 19, 2020 at 3:00– 3:45 p.m. EDT. TIME AND DATE: This meeting will be held by videoconference organized through the National Science Foundation. PLACE: STATUS: Committee Chair’s opening remarks, discussion of the Office of the Inspector General’s FY 2022 OMB Budget Submission, and recommendation to the Committee on Strategy. MATTERS TO BE CONSIDERED: CONTACT PERSON FOR MORE INFORMATION: Point of contact for this meeting is: Chris Blair, (703) 292–7000, cblair@ ns.gov. You may find meeting information and updates (time, place, subject matter or status of meeting) at https://www.nsf.gov/nsb/meetings/ notices.jsp#sunshine. Chris Blair, Executive Assistant to the National Science Board Office. [FR Doc. 2020–17881 Filed 8–12–20; 11:15 am] Closed. Chair’s remarks; review and discussion of proposed CS recommendation of approval to the Board of the NSF, NSB and OIG FY 2022 budget submissions to the Office of Management and Budget (OMB). MATTERS TO BE CONSIDERED: CONTACT PERSON FOR MORE INFORMATION: Point of contact for this meeting is: Chris Blair, (703) 292–7000, cblair@ ns.gov. You may find meeting information and updates (time, place, subject matter or status of meeting) at https://www.nsf.gov/nsb/meetings/ notices.jsp#sunshine. Chris Blair, Executive Assistant to the National Science Board Office. BILLING CODE 7555–01–P NATIONAL SCIENCE FOUNDATION Sunshine Act Meeting; National Science Board The National Science Board (NSB), pursuant to NSF regulations (45 CFR part 614), the National Science Foundation Act, as amended (42 U.S.C. 1862n–5), and the Government in the Sunshine Act (5 U.S.C. 552b), hereby gives notice of the scheduling of a teleconference for the transaction of National Science Board business, as follows: Closed teleconference of the National Science Board (NSB) Committee on Strategy (CS) of the National Science Board, to be held Wednesday, August 19, 2020 at 3:45– 4:00 p.m. EDT. TIME AND DATE: [FR Doc. 2020–17883 Filed 8–12–20; 11:15 am] BILLING CODE 7555–01–P NATIONAL SCIENCE FOUNDATION This meeting will be held by videoconference organized through the National Science Foundation. PLACE: Sunshine Act Meeting; National Science Board khammond on DSKJM1Z7X2PROD with NOTICES Closed. The National Science Board (NSB), pursuant to NSF regulations (45 CFR part 614), the National Science Foundation Act, as amended (42 U.S.C. 1862n–5), and the Government in the Sunshine Act (5 U.S.C. 552b), hereby gives notice of the scheduling of a teleconference for the transaction of National Science Board business, as follows: STATUS: Closed teleconference of the Committee on Oversight (CO) of the National Science Board, to be held Monday, August 17, 2020 at 3:00–4:00 p.m. EDT. Point of contact for this meeting is: Chris Blair, (703) 292–7000, cblair@ nsf.gov. You may find meeting information and updates (time, place, subject matter or status of meeting) at TIME AND DATE: VerDate Sep<11>2014 17:29 Aug 13, 2020 Jkt 250001 Closed. Chair’s remarks; review and discussion of proposed CS recommendation of approval to the Board of the NSF, NSB and OIG FY 2022 budget submissions to the Office of Management and Budget (OMB). MATTERS TO BE CONSIDERED: CONTACT PERSON FOR MORE INFORMATION: PO 00000 Frm 00070 Fmt 4703 Sfmt 4703 49685 https://www.nsf.gov/nsb/meetings/ notices.jsp#sunshine. Chris Blair, Executive Assistant to the National Science Board Office. [FR Doc. 2020–17884 Filed 8–12–20; 11:15 am] BILLING CODE 7555–01–P NUCLEAR REGULATORY COMMISSION [NRC–2020–0171] Setpoints for Safety-Related Instrumentation Nuclear Regulatory Commission. ACTION: Draft regulatory guide; request for comment. AGENCY: The U.S. Nuclear Regulatory Commission (NRC) is issuing for public comment draft regulatory guide (DG), DG–1363, ‘‘Setpoints for Safety-Related Instrumentation.’’ This DG is proposed Revision 4 of Regulatory Guide (RG) 1.105. The proposed revision describes an approach that is acceptable to the staff of the NRC to meet regulatory requirements ensuring that setpoints for safety related instrumentation are established and maintained within the technical specification limits. This proposed guide has been revised to incorporate additional information regarding American National Standards Institute (ANSI)/International Society of Automation (ISA) Standard 67.04.01– 2018, ‘‘Setpoints for Nuclear Safety Related Instrumentation,’’ since revision 3 of RG 1.105 was issued. DATES: Submit comments by September 14, 2020. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. This public review and comment period is 30 days in duration, although the public review and comment period for draft RGs is usually 60 days. The shortened comment period is provided because the NRC has previously interacted with stakeholders on related industry and NRC guidance and the proposed revision endorses ANSI/ISA 67.04.01– 2018 without any exceptions or clarifications. As a result, the NRC does not anticipate significant public comment. Although a time limit is given, comments and suggestions in connection with items for inclusion in guides currently being developed or improvements in all published guides are encouraged at any time. ADDRESSES: You may submit comments by any of the following methods: SUMMARY: E:\FR\FM\14AUN1.SGM 14AUN1 49686 Federal Register / Vol. 85, No. 158 / Friday, August 14, 2020 / Notices • Federal Rulemaking website: Go to https://www.regulations.gov and search for Docket ID NRC–2020–0171. Address questions about NRC docket IDs in Regulations.gov to Jennifer Borges; telephone: 301–287–9221; email: Jennifer.Borges@nrc.gov. For technical questions, contact the individuals listed in the FOR FURTHER INFORMATION CONTACT section of this document. • Mail comments to: Office of Administration, Mail Stop: TWFN– 7A06, U.S. Nuclear Regulatory Commission, Washington, DC 20555– 0001. ATTN: Program Management, Announcements and Editing Staff. 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: Dawnmathews Kalathiveettil, Office of Nuclear Reactor Regulation, telephone: 301–415–5905, email: Dawnmathews.Kalathiveettil@nrc.gov, and Michael Eudy, Office of Nuclear Regulatory Research, telephone: 301– 415–3104, email: Michael.Eudy@ nrc.gov. Both are staff of the U.S. Nuclear Regulatory Commission, Washington, DC 20555–0001. SUPPLEMENTARY INFORMATION: I. Obtaining Information and Submitting Comments khammond on DSKJM1Z7X2PROD with NOTICES A. Obtaining Information Please refer to Docket ID NRC–2020– 0171 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 Website: Go to https://www.regulations.gov and search for Docket ID NRC–2020–0171. • NRC’s Agencywide Documents Access and Management System (ADAMS): You may access publiclyavailable documents online in the ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/ adams.html. To begin the search, select ‘‘Begin Web-based ADAMS Search.’’ For problems with ADAMS, please contact the NRC’s Public Document Room reference staff at 1–800–397–4209, 301– 415–4737, or by email to pdr.resource@ nrc.gov. DG–1363 is available in ADAMS under Accession No. ML20055G823 and the regulatory analysis for DG–1363 is available in ADAMS under Accession No. ML20055G824. VerDate Sep<11>2014 17:29 Aug 13, 2020 Jkt 250001 B. Submitting Comments Please include Docket ID NRC–2020– 0171 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 into ADAMS. II. Additional Information The NRC is issuing for public comment a draft guide in the NRC’s ‘‘Regulatory Guide’’ series. This series was developed to describe methods that are acceptable to the NRC staff for implementing specific parts of the agency’s regulations, to explain techniques that the staff uses in evaluating specific issues or postulated events, and to describe information that the staff needs in its review of applications for permits and licenses. The DG, titled ‘‘Setpoints for SafetyRelated Instrumentation,’’ is temporarily identified by its task number, DG–1363 (ADAMS Accession No. ML20055G823). The draft guide is proposed Revision 4 of Regulatory Guide 1.105. This revision of the guide (Revision 4) endorses ANSI/ISA Standard 67.04.01–2018 as a method acceptable to the NRC staff for satisfying the NRC’s regulations for ensuring that: (a) Setpoints for safetyrelated instrumentation are established to protect plant safety and analytical limits, and (b) the maintenance of instrument channels implementing these setpoints ensures they are functioning as required, consistent with the plant technical specifications. This DG applies to licensees and applicants subject to part 50 of title 10 of the Code of Federal Regulations (10 CFR), ‘‘Domestic Licensing of Production and Utilization Facilities,’’ and 10 CFR part 52, ‘‘Licenses, Certifications, and Approvals for Nuclear Power Plants.’’ PO 00000 Frm 00071 Fmt 4703 Sfmt 4703 The previous revision (Revision 3) of this RG endorsed ISA S67.04–1994, ‘‘Setpoints for Nuclear Safety-Related Instrumentation,’’ with several clarifications and exceptions. In July 2014, the NRC staff issued DG–1141, ‘‘Setpoints for Safety Related Instrumentation’’ (ADAMS Accession No. ML081630179), for public comment (79 FR 40163). This DG evaluated the 2006 revision of the standard ANSI/ISA 67.04.01, ‘‘Setpoints for Safety-Related Instrumentation.’’ DG–1141 described several concerns with the 2006 revision of the standard. These concerns included the need for additional definitions, analytical limit avoidance probability, use of the technical specification allowable value as a metric for determining instrument channel functionality and operability, and what to consider as an appropriate statistical confidence level. The ANSI/ISA S67.04 Standards Committee addressed these NRC staff concerns, as well as comments provided by industry stakeholders, and issued a revision to the ANSI/ISA standard in December 2018. The NRC staff elected not to finalize DG–1141 as a revision to RG 1.105 and chose instead to evaluate the 2018 ANSI/ISA standard revision for endorsement and issue DG–1363 as a replacement for DG–1141. The staff notes that DG–1363 considers and addresses technical issues and public comments related to the issuance of DG–1141. The staff is also issuing for public comment a draft regulatory analysis (ADAMS Accession No. ML20055G824). The staff develops a regulatory analysis to assess the value of issuing or revising a regulatory guide as well as alternative courses of action. III. Backfitting, Forward Fitting, and Issue Finality DG–1363, if finalized, would endorse ANSI/ISA Standard 67.04.01–2018. Issuance of DG–1363, if finalized, would not constitute backfitting as defined in 10 CFR 50.109, ‘‘Backfitting,’’ and as described in NRC Management Directive (MD) 8.4, ‘‘Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests’’; constitute forward fitting as that term is defined and described in MD 8.4; or affect the issue finality of any approval issued under 10 CFR part 52. As explained in DG–1363, applicants and licensees would not be required to comply with the positions set forth in DG–1363. Dated: August 10, 2020. E:\FR\FM\14AUN1.SGM 14AUN1 Federal Register / Vol. 85, No. 158 / Friday, August 14, 2020 / Notices For the Nuclear Regulatory Commission. Meraj Rahimi, Acting Chief, Regulatory Guidance and Generic Issues Branch, Division of Engineering, Office of Nuclear Regulatory Research. John G. Lamb, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington DC 20555– 0001; telephone: 301–415–3100, email: John.Lamb@nrc.gov. SUPPLEMENTARY INFORMATION: FOR FURTHER INFORMATION CONTACT: [FR Doc. 2020–17763 Filed 8–13–20; 8:45 am] BILLING CODE 7590–01–P I. Obtaining Information and Submitting Comments NUCLEAR REGULATORY COMMISSION A. Obtaining Information [Docket Nos. 50–321 and 50–366; NRC– 2020–0184] Southern Nuclear Operating Company; Edwin I. Hatch Nuclear Plant, Units 1 and 2 Nuclear Regulatory Commission. ACTION: License amendment application; opportunity to comment, request a hearing, and petition for leave to intervene. AGENCY: The U.S. Nuclear Regulatory Commission (NRC) is considering issuance of an amendment to Facility Operating License Nos. DPR–57 and NPF–5, issued to Southern Nuclear Operating Company, for operation of the Edwin I. Hatch Nuclear Plant (Hatch), Units 1 and 2, respectively. The proposed amendment would revise technical specification (TS) 3.8.1, ‘‘AC Sources—Operating,’’ for Hatch, Units 1 and 2, to provide for a one-time extension of the completion time for the Hatch, Unit 1, emergency diesel generators. DATES: Submit comments by September 14, 2020. A request for a hearing or petitions for leave to intervene must be filed by October 13, 2020. ADDRESSES: You may submit comments by any of the following methods: • Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC–2020–0184. Address questions about NRC docket IDs in Regulations.gov to Jennifer Borges; telephone: 301–287–9127; email: Jennifer.Borges@nrc.gov. For technical questions, contact the individual listed in the FOR FURTHER INFORMATION CONTACT section of this document. • Mail comments to: Office of Administration, Mail Stop: TWFN–7– A60M, U.S. Nuclear Regulatory Commission, Washington, DC 20555– 0001, ATTN: Program Management, Announcements and Editing Staff. For additional direction on obtaining information and submitting comments, see ‘‘Obtaining Information and Submitting Comments’’ in the SUPPLEMENTARY INFORMATION section of this document. khammond on DSKJM1Z7X2PROD with NOTICES SUMMARY: VerDate Sep<11>2014 17:29 Aug 13, 2020 Jkt 250001 Please refer to Docket ID NRC–2020– 0184 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 website: Go to https://www.regulations.gov and search for Docket ID NRC–2020–0184. • 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 ‘‘Begin Web-based ADAMS Search.’’ For problems with ADAMS, please contact the NRC’s Public Document Room reference staff at 1–800–397–4209, 301– 415–4737, or by email to pdr.resource@ nrc.gov. The license amendment request is available in ADAMS under Accession No. ML20213C715. B. Submitting Comments Please include Docket ID NRC–2020– 0184 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 into ADAMS. II. Introduction The NRC is considering issuance of an amendment to Facility Operating License Nos. DPR–57 and NPF–5, issued PO 00000 Frm 00072 Fmt 4703 Sfmt 4703 49687 to Southern Nuclear Operating Company (SNC, the licensee), for operation of the Edwin I. Hatch Nuclear Plant (Hatch), Units 1 and 2, located in Appling County, Georgia. The proposed amendment would revise TS 3.8.1, ‘‘AC Sources— Operating,’’ for Hatch, Units 1 and 2, to provide a one-time extension of the completion time for the Hatch, Unit 1, emergency diesel generators. Before any issuance of the proposed license amendment, the NRC will need to make the findings required by the Atomic Energy Act of 1954, as amended (the Act), and NRC’s regulations. The NRC has made a proposed determination that the license amendment request involves no significant hazards consideration. Under the NRC’s regulations in section 50.92 of title 10 of the Code of Federal Regulations (10 CFR), this means that operation of the facility in accordance with the proposed amendment would not (1) involve a significant increase in the probability or consequences of an accident previously evaluated; or (2) create the possibility of a new or different kind of accident from any accident previously evaluated; or (3) involve a significant reduction in a margin of safety. As required by 10 CFR 50.91(a), the licensee has provided its analysis of the issue of no significant hazards consideration, which is presented below: 1. Does the proposed change involve a significant increase in the probability or consequences of an accident previously evaluated? Response: No. The proposed change provides a one-time extension of the [diesel generator] DG restoration time allowed by [technical specification] TS. This change will have no effect on accident probabilities since the DGs are not considered accident initiators. The proposed DG [allowed outage time] AOT extension does not require any physical plant modifications. Since no individual precursors of an accident are affected, the proposed amendment does not increase the probability of a previously analyzed event. The consequences of an evaluated accident are determined by the operability of plant systems designed to mitigate those consequences. The consequences of an evaluated accident with an inoperable DG is not altered by the proposed change and will not affect the consequences of an accident previously evaluated. Therefore, the proposed change does not involve a significant increase in the probability or consequences of an accident previously evaluated. 2. Does the proposed change create the possibility of a new or different kind of accident from any accident previously evaluated? Response: No. E:\FR\FM\14AUN1.SGM 14AUN1

Agencies

[Federal Register Volume 85, Number 158 (Friday, August 14, 2020)]
[Notices]
[Pages 49685-49687]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-17763]


=======================================================================
-----------------------------------------------------------------------

NUCLEAR REGULATORY COMMISSION

[NRC-2020-0171]


Setpoints for Safety-Related Instrumentation

AGENCY: Nuclear Regulatory Commission.

ACTION: Draft regulatory guide; request for comment.

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

SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is issuing for 
public comment draft regulatory guide (DG), DG-1363, ``Setpoints for 
Safety-Related Instrumentation.'' This DG is proposed Revision 4 of 
Regulatory Guide (RG) 1.105. The proposed revision describes an 
approach that is acceptable to the staff of the NRC to meet regulatory 
requirements ensuring that setpoints for safety related instrumentation 
are established and maintained within the technical specification 
limits. This proposed guide has been revised to incorporate additional 
information regarding American National Standards Institute (ANSI)/
International Society of Automation (ISA) Standard 67.04.01-2018, 
``Setpoints for Nuclear Safety Related Instrumentation,'' since 
revision 3 of RG 1.105 was issued.

DATES: Submit comments by September 14, 2020. Comments received after 
this date will be considered if it is practical to do so, but the NRC 
is able to ensure consideration only for comments received on or before 
this date. This public review and comment period is 30 days in 
duration, although the public review and comment period for draft RGs 
is usually 60 days. The shortened comment period is provided because 
the NRC has previously interacted with stakeholders on related industry 
and NRC guidance and the proposed revision endorses ANSI/ISA 67.04.01-
2018 without any exceptions or clarifications. As a result, the NRC 
does not anticipate significant public comment. Although a time limit 
is given, comments and suggestions in connection with items for 
inclusion in guides currently being developed or improvements in all 
published guides are encouraged at any time.

ADDRESSES: You may submit comments by any of the following methods:

[[Page 49686]]

     Federal Rulemaking website: Go to https://www.regulations.gov and search for Docket ID NRC-2020-0171. Address 
questions about NRC docket IDs in Regulations.gov to Jennifer Borges; 
telephone: 301-287-9221; email: [email protected]. For technical 
questions, contact the individuals listed in the FOR FURTHER 
INFORMATION CONTACT section of this document.
     Mail comments to: Office of Administration, Mail Stop: 
TWFN-7A06, U.S. Nuclear Regulatory Commission, Washington, DC 20555-
0001. ATTN: Program Management, Announcements and Editing Staff.
    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: Dawnmathews Kalathiveettil, Office of 
Nuclear Reactor Regulation, telephone: 301-415-5905, email: 
[email protected], and Michael Eudy, Office of Nuclear 
Regulatory Research, telephone: 301-415-3104, email: 
[email protected]. Both are staff of the U.S. Nuclear Regulatory 
Commission, Washington, DC 20555-0001.

SUPPLEMENTARY INFORMATION: 

I. Obtaining Information and Submitting Comments

A. Obtaining Information

    Please refer to Docket ID NRC-2020-0171 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 Website: Go to https://www.regulations.gov and search for Docket ID NRC-2020-0171.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may access publicly-available documents online in the 
ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``Begin Web-based ADAMS 
Search.'' For problems with ADAMS, please contact the NRC's Public 
Document Room reference staff at 1-800-397-4209, 301-415-4737, or by 
email to [email protected]. DG-1363 is available in ADAMS under 
Accession No. ML20055G823 and the regulatory analysis for DG-1363 is 
available in ADAMS under Accession No. ML20055G824.

B. Submitting Comments

    Please include Docket ID NRC-2020-0171 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 into ADAMS.

II. Additional Information

    The NRC is issuing for public comment a draft guide in the NRC's 
``Regulatory Guide'' series. This series was developed to describe 
methods that are acceptable to the NRC staff for implementing specific 
parts of the agency's regulations, to explain techniques that the staff 
uses in evaluating specific issues or postulated events, and to 
describe information that the staff needs in its review of applications 
for permits and licenses.
    The DG, titled ``Setpoints for Safety-Related Instrumentation,'' is 
temporarily identified by its task number, DG-1363 (ADAMS Accession No. 
ML20055G823). The draft guide is proposed Revision 4 of Regulatory 
Guide 1.105. This revision of the guide (Revision 4) endorses ANSI/ISA 
Standard 67.04.01-2018 as a method acceptable to the NRC staff for 
satisfying the NRC's regulations for ensuring that: (a) Setpoints for 
safety-related instrumentation are established to protect plant safety 
and analytical limits, and (b) the maintenance of instrument channels 
implementing these setpoints ensures they are functioning as required, 
consistent with the plant technical specifications. This DG applies to 
licensees and applicants subject to part 50 of title 10 of the Code of 
Federal Regulations (10 CFR), ``Domestic Licensing of Production and 
Utilization Facilities,'' and 10 CFR part 52, ``Licenses, 
Certifications, and Approvals for Nuclear Power Plants.''
    The previous revision (Revision 3) of this RG endorsed ISA S67.04-
1994, ``Setpoints for Nuclear Safety-Related Instrumentation,'' with 
several clarifications and exceptions. In July 2014, the NRC staff 
issued DG-1141, ``Setpoints for Safety Related Instrumentation'' (ADAMS 
Accession No. ML081630179), for public comment (79 FR 40163). This DG 
evaluated the 2006 revision of the standard ANSI/ISA 67.04.01, 
``Setpoints for Safety-Related Instrumentation.'' DG-1141 described 
several concerns with the 2006 revision of the standard. These concerns 
included the need for additional definitions, analytical limit 
avoidance probability, use of the technical specification allowable 
value as a metric for determining instrument channel functionality and 
operability, and what to consider as an appropriate statistical 
confidence level. The ANSI/ISA S67.04 Standards Committee addressed 
these NRC staff concerns, as well as comments provided by industry 
stakeholders, and issued a revision to the ANSI/ISA standard in 
December 2018. The NRC staff elected not to finalize DG-1141 as a 
revision to RG 1.105 and chose instead to evaluate the 2018 ANSI/ISA 
standard revision for endorsement and issue DG-1363 as a replacement 
for DG-1141. The staff notes that DG-1363 considers and addresses 
technical issues and public comments related to the issuance of DG-
1141.
    The staff is also issuing for public comment a draft regulatory 
analysis (ADAMS Accession No. ML20055G824). The staff develops a 
regulatory analysis to assess the value of issuing or revising a 
regulatory guide as well as alternative courses of action.

III. Backfitting, Forward Fitting, and Issue Finality

    DG-1363, if finalized, would endorse ANSI/ISA Standard 67.04.01-
2018. Issuance of DG-1363, if finalized, would not constitute 
backfitting as defined in 10 CFR 50.109, ``Backfitting,'' and as 
described in NRC Management Directive (MD) 8.4, ``Management of 
Backfitting, Forward Fitting, Issue Finality, and Information 
Requests''; constitute forward fitting as that term is defined and 
described in MD 8.4; or affect the issue finality of any approval 
issued under 10 CFR part 52. As explained in DG-1363, applicants and 
licensees would not be required to comply with the positions set forth 
in DG-1363.

    Dated: August 10, 2020.


[[Page 49687]]


    For the Nuclear Regulatory Commission.
Meraj Rahimi,
Acting Chief, Regulatory Guidance and Generic Issues Branch, Division 
of Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2020-17763 Filed 8-13-20; 8:45 am]
BILLING CODE 7590-01-P
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