ML17340B102

Meeting Presentation, Proposed Prioritization of Fire PRA FAQ Efforts

ML17340B102
Person / Time
Site:	Nuclear Energy Institute
Issue date:	12/13/2017
From:	Nuclear Energy Institute
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML17340B096	List: ML17340B097 ML17340B098 ML17340B100 ML17340B101 ML17340B102 ML17340B103 ML17340B104 ML17340B105 ML17340B106
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Download: ML17340B102 (7)

Text

Proposed Prioritization of Fire PRA FAQ Efforts December 13, 2017

Background

• Several FPRA realism improvement opportunities identified during October 2017 workshop deemed potentially suitable for FAQ process.

• Industry reviewed input from workshop and prioritized FAQ work to be completed in the next 6-9 months

• Did not attempt to prioritize against more in-depth research work

• Will discuss new proposed FAQs in detail today

Immediate Priority - Completion of Ongoing Work

• Transient controls PAU (14-007)

• Cable tray ignition at 500 C (16-011)

• Improved HEAF NSP (17-013)

Highest Priority

• HEAF event frequency divided into 1E and non-1E groups

• Updated EC NSP curve

• Time to detection is zero for manual NSP calculations

High Priority

• Plant trip probability

• Reduce NSP floor

Moderate Priority

• Fire damages part of equipment in cabinet

Proposed Schedule Delivery of FAQs to Target Closure Date NRC Immediate Priority N/A January 2018 Highest Priority January 2018 April 2018 High Priority April 2018 July 2018 Moderate Priority July 2018 September 2018