Fire Dynamics Tools (FDT ^s ) Quantitative Fire Hazard Analysis Methods for the U.S. Nuclear Regulatory Commission Fire Protection Inspection Program (NUREG-1805)

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• Publication Information
• Table of Contents
• Errata and Updated/Revised Excel Spreadsheets
• Abstract

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Publication Information

Manuscript Completed: October 2004
Date Published: December 2004

Prepared by:
Naeem Iqbal, Mark Henry Salley

Sunil Weerakkody, NRC Project Manager

Prepared for:
Division of System Safety and Analysis
Office of Nuclear Reactor Regulation
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

Availability Notice

Table of Contents

PDF	Originally Issued Excel Spreadsheets (Downloadable)
Introductory Pages (862 KB)
Chapters 1-2 (7.40 MB)	Chapter 2.1 Predicting Hot Gas Layer Temperature and Smoke Layer Height in a Room Fire with Natural Ventilation Chapter 2.2 Predicting Hot Gas Layer Temperature in a Room Fire with Forced Ventilation Chapter 2.3 Predicting Hot Gas Layer Temperature in a Room Fire with Door Closed
Chapters 3-6 (8.73 MB)	Chapter 3. Estimating Burning Characteristics of Liquid Pool Fire, Heat Release Rate, Burning Duration, and Flame Height Chapter 4. Estimating Wall Fire Flame Height Chapter 5.1 Estimating Radiant Heat Flux from Fire to a Target Fuel at Ground Level under Wind-Free Condition Point Source Radiation Model Chapter 5.2 Estimating Radiant Heat Flux from Fire to a Target Fuel at Ground Level in Presence of Wind (Tilted Flame) Solid Flame Radiation Model Chapter 5.3 Estimating Thermal Radiation from Hydrocarbon Fireballs Chapter 6. Estimating the Ignition Time of a Target Fuel Exposed to a Constant Radiative Heat Flux
Chapters 7-10 (3.55 MB)	Chapter 7. Estimating the Full-Scale Heat Release Rate of a Cable Tray Fire Chapter 8. Estimating Burning Duration of Solid Combustibles Chapter 9. Estimating Centerline Temperature of a Buoyant Fire Plume Chapter 10. Estimating Sprinkler Response Time
Chapters 11-13 (5.79 MB)	Chapter 13. Fire Severity Calculations
Chapters 14-18 (6.08 MB)	Chapter 14. Estimating Pressure Rise Due to a Fire in a Closed Compartment Chapter 15. Estimating Pressure Increase and Explosive Energy Release Associated with Explosions Chapter 16. Calculating the Rate of Hydrogen Gas Generation in Battery Rooms Chapter 17.1 Estimating Thickness of Fire Protection Spray-Applied Coating for Structural Steel Beams (Substitution Correlation) Chapter 17.2 Estimating Fire Resistance Time of Steel Beams Protected by Fire Protection Insulation (Quasi-Steady-State Approach) Chapter 17.3 Estimating Fire Resistance Time of Steel Beams Protected by Fire Protection Insulation (Quasi-Steady-State Approach) Chapter 17.4 Estimating Fire Resistance Time of Unprotected Steel Beams (Quasi-steady-state Approach) Chapter 18. Estimating Visibility Through Smoke
Appendices A-I (2.92 MB)
Appendix J (14.6 MB)

Errata and Updated/Revised Excel Spreadsheets

PDF	Updated/Revised Excel Spreadsheets (Downloadable)
Text Errata (45 KB) (Issued June 2005)	Chapter 5.2. Estimating Radiant Heat Flux from Fire to a Target Fuel at Ground Level in Presence of Wind (Tilted Flame) Solid Flame Radiation Model (Revision 1805.1, Issued June 2005) Chapter 2.3. Predicting Hot Gas Layer Temperature in a Room with Door Closed (Revision 1805.1, Issued August 2005)

Abstract

The U.S. Nuclear Regulatory Commission (NRC), Office of Nuclear Reactor Regulation (NRR), Division of Systems Safety and Analysis (DSSA), Plant Systems Branch (SPLB), Fire Protection Engineering and Special Projects Section, has developed quantitative methods, known as “Fire Dynamics Tools” (FDT ^s ), to assist regional fire protection inspectors in performing fire hazard analysis (FHA). These methods have been implemented in spreadsheets and taught at the NRC’s quarterly regional inspector workshops. FDT were developed using state-of-the-art fire dynamics equations and correlations that were preprogrammed and locked into Microsoft Excel ^® spreadsheets. These FDT ^s will enable the inspector to perform quick, easy, first-order calculations for the potential fire scenarios using today’s state-of-the-art principles of fire dynamics. Each FDT ^s spreadsheet also contains a list of the physical and thermal properties of the materials commonly encountered in nuclear power plants. This NUREG-series report addresses the technical bases for FDT ^s , which were derived from the principles developed primarily in the Society of Fire Protection Engineers (SFPE) Handbook of Fire Protection Engineering, National Fire Protection Association (NFPA) Fire Protection Handbook, and other fire science literature. The subject matter of this report covers many aspects of fire dynamics and contains descriptions of the most important fire processes. A significant number of examples, reference tables, illustrations, and conceptual drawings are presented in this report to expand the inspector’s appreciation in visualizing and retaining the material and understanding calculation methods.