ML23191A066

NEI 99-02 Draft Rev. 8 Update for July 2023 ROP Public Meeting

ML23191A066
Person / Time
Site:	Nuclear Energy Institute
Issue date:	07/07/2023
From:	Riti T Nuclear Energy Institute
To:	Office of Nuclear Reactor Regulation
References
NEI 99-02, Rev 8
Download: ML23191A066 (1)

Text

Update on NEI 99-02, Revision 8

ROP Public Meeting

July 13, 2023

©2023 Nuclear Energy Institute 1 Purpose

Provide update on status of NEI 99-02 draft revision 8 and engagement strategy for NRC review and discussion

©2023 Nuclear Energy Institute 2 Overview

Since revision 7 was issued in 2013

• 50 FAQs have been approved*

• 2 FAQs pending

22- 01, Replace the ANS PI with ERFER PI Pending Commission Approval of SECY 0010

23- 02, PB Scram (in NRC review)

• 1 White Paper, AP1000 (in NRC review)

• The current list of approved FAQs can be found on the NRC website.

©2023 Nuclear Energy Institute 3 Draft Changes

Summary of Changes

• Replaced references to Consolidated Data Entry (CDE) with Industry Reporting and Information System (IRIS) throughout

• Incorporated definition of concurrent failure (FAQ 14-04)

• Added definition of initial transient (FAQ 18-01)

• Major re-write of MSPI section including App. F&G (FAQs 13-06, 14-01, 14-02, 14-08, 15-03, 16-01, 16-02, 16-03, 16-04, 17-03, 17-04, 17-05, 20-03)

• Major rewrite of EP section (FAQs 13-07, 19-01, 20-04, 21-02, 15-04, 20-02, 14-05, 21-03)

Includes placeholder for FAQ 22-01 in advance of Commission direction on SECY-23-0010

• Added new plant specific FAQs (14-03, 17-01, 17-02, 18-03, 18-04, 20-01)

• Updated criteria to account for AP1000 design difference (FAQ 21-01 & pending white paper)

• Updated BWR question for verifying rod position (FAQ 15-01)

©2023 Nuclear Energy Institute 4 Draft Changes

Additional Changes

• Address frequently asked questions and other areas that may warrant additional clarity

MFW availability

Use of CBPs & AFW

Describing planned scrams versus unplanned scrams to support post maintenance activities such as expected actions taken to address main turbine rubs and initial vibrations during plant startup

Add clarity for reactor shutdowns less than 35% versus reactor scrams (FAQ 18- 05)

Add clarity to unplanned power change exclusion when addressing other issues during a planned power reduction greater than 20% (FAQ 13- 02, 13- 05)

Add clarity around what is considered as part of the unplanned power reduction versus normal follow up actions to meet reactivity plans, ASI/Xenon control, and other normal reactor operations following power changes

©2023 Nuclear Energy Institute 5 Next Steps

Finish addressing remaining open items, pending FAQs/AP1000 White Paper, etc Incorporate feedback from internal industry reviews

• Additional clarity added to MSPI section & appendices Submit to NRC prior to Sept 20th ROP public meeting (ECD Aug 15th)

Discuss and incorporate NRC feedback as appropriate during ROP public meetings (additional ROP public meetings may be warranted)

Implement NEI 99-02 rev. 8

©2023 Nuclear Energy Institute 6 Questions

©2023 Nuclear Energy Institute 7