ML112200077

8/4/2011 - Presentation for Meeting with the Technical Specifications Task Force and the Nuclear Energy Institute Regarding Gas Accumulation Issues and TSTF-523

ML112200077
Person / Time
Site:	Technical Specifications Task Force, Nuclear Energy Institute
Issue date:	08/31/2011
From:	Office of Nuclear Reactor Regulation
To:
References
Download: ML112200077 (6)

Text

NRC, TSTF, and Other Stakeholders Public WorkshopAugust 4, 2011 Agenda*Administrative

• Topical Report NEI 09-10

• Status of Gas Accumulation Generic CommunicationsInformationNotice2011 17*Information Notice 2011-17*Generic Letter 2008-01

• Traveler TSTF-523

• Review of Action Items

• Public Comments

• Adjourn NRC Information Notice 2011-17, "Calculation Methodologies for Operability Determinations of Gas Voids in Nuclear Power Plant Piping"

• Purpose is to inform addressees of recent instances of gas accumulation in safety-related systems in which the resulting operability determination of the as-found condition relied on computer models that were not demonstrated to be technically appropriate for the

intended application.

• No NRC requirements

• No specific action or written response required by addressees REGULATIONS 50.36 Appendix A Appendix BTSs and SRs NEI 09-10TSTF-523 RIS 2005-20 IMC Part 9900 Licensee Programs Guidance Document ??Is there something

missing to achieve an industry guidance document??

Generic Letter 2008-01

• Closed by July 5, 2011 memo, "Completion of Review of Licensee Responses to Generic Letter 2008-01, Managing Gas Accumulation In Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems" (ML11165A165)

• Action ItemsCikihidhhbi

• C ont inue to wor k w i t h i n dustry t h roug h NEI to o b ta i n a comprehensive gas management document based on the continued review and development of NEI 09-10.

• Prepare a safety evaluation when it receives an acceptable NEI gas management document.

• Prepare a regulatory issue summary that announces the endorsement of the acceptable NEI gas management document.

Generic Letter 2008-01Action Items Continued

• Continue to work with industry through NEI to develop acceptable methodologies for predicting gas movement phenomena.

• Continue to work with the TSTF to enhance the TSs and establish a program for managing gas accumulation.

• Continue to su pport Re gion ins pection activitiesppgp