ML26028A251

From kanterella
Jump to navigation Jump to search
Proposed Rule: Incorporation by Reference of IEEE 603-2018 Public Meeting Presentation
ML26028A251
Person / Time
Issue date: 02/03/2026
From: Denise Edwards, Rodriguez G
NRC/RGN-II
To:
References
90FR59402
Download: ML26028A251 (0)
v • d • e


Text

Proposed Rule:

Incorporation by Reference of Institute of Electrical and Electronics Engineers Standard (IEEE) 603-2018, Criteria for Safety Systems February 3, 2026 90 FR 59402 Denise Edwards - Rulemaking Project Manager Gilberto Blas Rodriguez - Technical Lead

Meeting Logistics 2

  • Sound/Audio/Video
  • Slides
  • Raise Hand Functionality
  • Teams Chat
  • Meeting Transcription

Agenda

  • Welcome/Introduction/Logistics
  • Opening Remarks
  • Purpose of Meeting
  • Rulemaking Schedule

- Background

- Overview of the Proposed Rule

  • Questions 3

Purpose of Meeting

  • Explain the status of the ongoing rulemaking.
  • Discuss the NRC staffs position regarding incorporation by reference (IBR) of IEEE.
  • This meeting is intended to allow stakeholders to ask questions related to the proposed rule, such that they can understand the proposed rule, and submit well informed and specific comments. Comments can be submitted through regulations.gov.

4

Comments on the Proposed Rule

  • The comment period closes February 17, 2026.
  • We are not accepting comments on the proposed rule during this meeting.
  • There will be no formal responses to discussions during this meeting, but the staff may post additional information on https://www.regulations.gov.
  • No regulatory decisions will be made during this meeting.

5

General Rulemaking Process 6

https://www.nrc.gov/about-nrc/regulatory/rulemaking/rule making-process Federal Register Notice 90 FR 59402 published on December 19, 2025 (proposed rule and draft guide)

7 DOCUMENT ADAMS ACCESSION NO. / FEDERAL REGISTER CITATION Proposed Rule Proposed Rule: Incorporation by Reference of Institute of Electrical and Electronics Engineers Standard 603-2018 - FRN 90 FR 59402 https://www.regulations.gov/docket/NRC-2024-0045/documents ML24353A318 Draft Guidance Document DG-1251, Revision 1, Guidance for Protection and Safety Systems for Nuclear Power Plants ML25114A021 Unofficial Redline Unofficial Redline of the NRC's Proposed Rule: Incorporation by Reference of Institute of Electrical and Electronics Engineers Standard 603-2018 NRC 2024-0045; RIN-3150-AL06 ML24353A325 The documents identified in the following table are available to interested persons through one or more of the following methods, as indicated.

Availability of Documents

Rulemaking Process & Milestones Proposed Rule Final Rule (Estimated)

Rule Commencement 8/15/2024 Publication in the Federal Register 7/24/2026 Publication in the Federal Register 12/19/2025 Rule Becomes Effective 8/23/2026 Public Comment Period 12/19/2025 - 2/17/2026 60-day comment period Public Meeting 2/3/2026 For more information on NRCs rulemaking process click here: https://www.nrc.gov/about-nrc/regulatory/rulemaking/rulemaking-process.html For updates regarding this rulemaking click here: https://www.nrc.gov/reading-rm/doc-collections/rulemaking-ruleforum/active/ruledetails.html?id=2203 8

IEEE Std-603-2018 Rule 9

=

Background===

  • Title 10 of the Code of Federal Regulations (10 CFR) Part 50 contains requirements for the design of protection and safety systems for nuclear power plants.

- 10 CFR 50.55a(h), Protection and safety systems, provides requirements for the design of protection and safety systems for nuclear power reactors.

- IEEE Std. 279-1968, 279-1971, and 603-1991 are IBR into 10 CFR 50.55a(h).

- IEEE Std 603 has subsequently been updated (1998, 2009, 2018).

10

Scope IEEE Std 603-2018 Rulemaking

  • Overview

- The proposed rulemaking incorporates by reference IEEE 603-2018 into 10 CFR 50.55a(h).

- IEEE Std 603-2018 would be required for new licenses and applications coming in under Part 50 and 52.

  • Commencing 30 days after date of publication of the final rule in the Federal Register.
  • The rule is not intended to change the scope of the systems covered in the final safety analysis report (FSAR) for currently operating nuclear power plants.

11

Scope IEEE Std 603-2018 Rulemaking (Cont.)

  • Consistent with previous IBR of IEEE Std 603-1991:

- Secondary references are guidance. If a standard is endorsed in a regulatory guide, it is considered an acceptable method by the NRC for meeting the requirement stated in that guide.

12

Clause 5.16 Common Cause Failure

  • The first sentence of Clause 5.16 states The safety system design and development shall address common-cause failures (CCF) that create a potential to degrade or defeat the safety system function.
  • The remaining statements within Clause 5.16 describe guidance regarding how CCF could be addressed.

- While these methods may be acceptable to address CCF in appropriate circumstances, this list is not comprehensive and does not include all of the flexibilities the Commission directed to staff, in SRM-SECY-22-0076.

- NRC staff would review such applications on a case-by-case basis.

13

Clause 5.16 Common Cause Failure (Cont.)

-The first sentence of this clause is consistent with the existing requirement in Appendix A to 10 CFR Part 50, Introduction to the General Design Criteria:

(4) Consideration of the possibility of systematic, nonrandom, concurrent failures of redundant elements in the design of protection systems and reactivity control systems. (See Criteria 22, 24, 26, and 29.)

14

Clause 5.16 Common Cause Failure (Cont.)

  • When applying IEEE Std 603-2018, the first sentence within Clause 5.16, Common-cause failure, captures the only regulatory requirement of Clause 5.16, that the safety system design and development shall address CCF that create a potential to degrade or defeat the safety system function.

15

Protection and Safety Systems

- IEEE Std 279 uses the term protection systems to define its scope.

- IEEE Std 603 uses the term safety systems to define its scope.

16

Protection and Safety Systems (Cont.)

  • Thus, the term protection system is not synonymous with the term safety system. This proposed rule would not change the scope of the systems covered in the final safety analysis report for currently operating nuclear power plants.

17

DG-1251 (Revision 2 to RG 1.153)

  • The purpose of DG-1251 is to provide supplemental guidance and clarifying information for implementing certain criteria in IEEE Std 603-2018.

- Provides background information on key items regarding clauses found in the standard.

- Provides direction to stakeholders on available relevant guidance on certain key areas and Clauses.

- Provides staff regulatory position and guidance on certain clauses.

  • The NRC requests public comment on the draft regulatory guide.

18

DG-1251 (Revision 2 to RG 1.153) (Cont.)

  • Supplemental and clarifying guidance for implementing certain criteria in IEEE Std 603-2018 are identified:
1. Clause 5.5 System integrity
2. Clause 5.6 Independence
3. Clause 5.9 Control of Access
4. Clause 5.16 Common-cause failure
  • Table 1. - Identifies relevant additional guidance applicable to certain clauses of IEEE Std 603-2018.

19

Questions?

Comments on the Proposed Rule

  • The comment period closes February 17, 2026.

21

Meeting Adjourned 22

Retrieved from "https://kanterella.com/w/index.php?title=ML26028A251&oldid=5542150"