ML18213A099

2018 Joint EPRI/NRC-RES Fire PRA Workshop, NUREG_CR-6850 Updates

ML18213A099
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Issue date:	07/31/2018
From:	Tammie Rivera NRC/RES/DRA/FRB, Electric Power Research Institute
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2018 Joint EPRI/NRC-RES Fire PRA Workshop, Module III - Fire Analysis Task Number Task Title Updates Summary Task 1 Plant Boundary Definition and No updates since NUREG/CR-6850 Partitioning Task 6 Fire Ignition Frequencies Supplement 1 to NUREG/CR-6850 (EPRI 1019259):

• Published in 2010

• FAQ 06-0016- Counting guidance for electrical cabinets

• FAQ 06-0017- Counting guidance for high energy arcing faults

• FAQ 06-0018- Counting guidance for main control board

• FAQ 07-0031- Miscellaneous counting guidance clarifications

• FAQ 07-0035- Counting guidance for high energy arcing faults on bus ducts

• FAQ 08-0042- Propagation of fires from electrical cabinets/Well sealed panels

• FAQ 08-0048- Generic fire ignition frequencies Additional FAQs:

• FAQ 13-0005- Counting and modeling of SICF and CFW

• FAQ 13-0005- Counting and modeling of Junction Boxes

• FAQ 14-0008- Clarification on counting the main control board

• FAQ 12-0064- Influence factors for transient and hotwork fires NUREG-2169 / EPRI 3002002936:

• Published in 2014

• New generic frequencies Page 1

2018 Joint EPRI/NRC-RES Fire PRA Workshop, Module III - Fire Analysis Task Number Task Title Updates Summary Task 8 Scoping Fire Modeling Supplement 1 to NUREG/CR-6850 (EPRI 1019259):

• Published in 2010

• FAQ 08-0043- Location of fires within electrical cabinets

• FAQ 08-0044- Main feed water pump oil spills Additional FAQs:

• FAQ 14-0009- Treatment of well-sealed MCCs NRR Closure Memo

• June 21, 2012, ML12171A583

• New severity factors for pump/oil fires NUREG-2178 / EPRI 3002005578

• New heat release rate probability distributions for electrical cabinets

• Obstructed plume NUREG/CR-7102

• Kerite Analysis in Thermal Environment of FIRE Page 2

2018 Joint EPRI/NRC-RES Fire PRA Workshop, Module III - Fire Analysis Task Number Task Title Updates Summary Task 11a Detailed Fire Modeling/Single Supplement 1 to NUREG/CR-6850 (EPRI 1019259):

Compartment Analysis

• Published in 2010

• FAQ 07-0035- Zone of influence for high energy arcing faults on bus ducts

• FAQ 08-0042- Propagation of fires from electrical cabinets/Well sealed panels

• FAQ 08-0043- Location of fires within electrical cabinets

• FAQ 08-0049- Cable tray fire propagation

• FAQ 08-0046- Incipient fire detection system

• FAQ 08-0050- Manual suppression probabilities

• FAQ 08-0050- Transient fire heat release rate growth profile Additional FAQs:

• FAQ 13-0004- Modeling treatment for sensitive electronics

• FAQ 13-0005- Counting and modeling of SICF and CFW

• FAQ 13-0006- Counting and modeling of Junction Boxes

• FAQ 14-0009- Treatment of well-sealed MCCs

• FAQ 14-007- Transient Fire Frequency Likelihood

• FAQ 16-0011- Cable tray ignition

• FAQ 17-0013- HEAF non-suppression probabilities NUREG & EPRI Publications

• NUREG 1805 Supplement 1 (2013)

• NUREG/CR-7010 Vol 1, FLASH-CAT Model for cable fire HRR (2012)

• NUREG/CR-6931, Vol. 3, THIEF Model for cable heating (2007)

• NUREG 1934 / EPRI 1023259 - Fire Modeling Users Guide (2012)

• NUREG 1824 / EPRI 1011999 - Fire Modeling Verification and Validation (2007)

• NUREG 1824 Supplement 1 / EPRI 3002002182 - Fire Modeling Verification and Validation (2016)

• EPRI 3002000830 - FIVE Rev 2 (2014), Updated & new spreadsheets

• NUREG-2169 / EPRI 3002002936 (2014), New manual suppression probability curves Page 3

2018 Joint EPRI/NRC-RES Fire PRA Workshop, Module III - Fire Analysis Task Number Task Title Updates Summary NUREG-2178 / EPRI 3002005578, RACHELLE FIRE New heat release rate probability distributions for electrical cabinets and treatment for obstructed fire plumes NUREG/CR-7197, HELEN FIRE, Electrical cabinet heat release rate tests NUREG-2180, DELORES FIRE Treatment of incipient detection systems Task 11b Detailed Fire Modeling/Main Control No updates since NUREG/CR-6850 on the fire modeling guidance.

Room Analysis NUREG 1921 Supplement 1, EPRI 3002009215 EPRI/NRC-RES Fire Human Reliability Analysis Guidelines: Qualitative Analysis for Main Control Room Abandonment Ongoing research on modeling control room abandonment scenarios from human reliability/plant response model perspective.

Task 11c Detailed Fire Modeling/Multi No updates since NUREG/CR-6850 Compartment Analysis Task 13 Seismic Fires Interactions No updates since NUREG/CR-6850 Assessment Tasks 1, 6, ASME/ANS RA-Sa-2009 Fire PRA Standard 8, 11, 13 Page 4