ML18051A199

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Approval of ASME Code Cases for Industry Use, TSTF Presentation from 2/15/2018 Quarterly Meeting
ML18051A199
Person / Time
Site: Technical Specifications Task Force
Issue date: 02/15/2018
From: Lashley P
Technical Specifications Task Force
To:
Office of Nuclear Reactor Regulation
Honcharik M
Shared Package
ML18051A193 List:
References
Download: ML18051A199 (7)


Text

Technical Specifications Task Force TSTF A Joint Owners Group Activity Approval of ASME Code Cases for Industry Use Phil Lashley Technical Specifications Task Force 1

Technical Specifications Task Force TSTF A Joint Owners Group Activity Introduction

  • Current approval of ASME Code Cases for industrywide use is governed by 10 CFR 50.55a

- 10 CFR 50.55a(a)(1)(iii) incorporates certain code cases, like N5133, N7221, N7294, etc.

- 10 CFR 50.55a(a)(3) incorporates regulatory guides that list the ASME Code Cases that are generically approved for industry.

2

Technical Specifications Task Force TSTF A Joint Owners Group Activity RG Revision

  • RG revision is a significant regulatory effort:

- RG 1.84

  • Revision 35 10/2010
  • Revision 36 08/2014
  • Revision 37 01/2018

- RG 1.147

  • Revision 16 10/2010
  • Revision 17 08/2014
  • Revision 18 01/2018

- RG 1.192

  • Initial Revision 06/2003
  • Revision 1 10/2014
  • Revision 2 01/2018 3

Technical Specifications Task Force TSTF A Joint Owners Group Activity Operating Experience

  • Between revisions, licensee use of new/updated Code Cases requires individual submittals, often in shortened timeframe

- Code Case N5134

  • ASME approved 5/7/2014
  • Arkansas Nuclear One emergency request submitted 10/31/2014
  • Exelon fleet request submitted 1/28/2016
  • Fermi request submitted 8/15/17
  • Cooper request submitted 8/17/17
  • Perry emergency request submitted 8/20/17
  • Regulator and licensee efficiencies could be realized if individual Code Cases could be approved between RG and regulation revisions without licensee submittals.

4

Technical Specifications Task Force TSTF A Joint Owners Group Activity Industry Proposal NearTerm Approach

  • Industry selects ASMEapproved Code Cases with generic applicability
  • Industry submits a single combined relief request for all applicable plants using the current regulatory process
  • NRC SE would list any limitations or conditions
  • NRC SE would be part of all licensee dockets 5

Technical Specifications Task Force TSTF A Joint Owners Group Activity Industry Proposal LongTerm Approach

  • Industry would request a revision to 10 CFR 50.55a to incorporate an expedited review process for ASMEapproved Code Cases
  • Would allow NRC to publish a SE with any relative limitations or conditions without a licensee submittal
  • Would allow licensees to use NRCapproved Code Cases between RG revisions and 10 CFR 50.55a rulemaking 6

Technical Specifications Task Force TSTF A Joint Owners Group Activity Discussion 7