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ABSTRACT

The prudent teaching of the forensic fire engineering analysis of complex building fires must include the subject of computer fire modeling, particularly the use of the Fire Dynamics Simulator (FDS), developed by the National Institute of Standards and Technology (NIST).  However, the problems associated with FDS require that large buildings be divided into rooms or zones, with each assigned to an individual computational mesh.  These mutli-mesh models often produce relatively long execution times of days or weeks and typically require parallel processing computing clusters, which require technically challenging set up and maintenance.  These performance gains can only be accomplished using high performance parallel processing computer clusters designed specifically to use operating systems and hardware that exploit the parallel functions of the FDS code.  This paper presents best practices from the latest research in constructing small, medium, and large-scale high performance parallel processing computing clusters for use in academic environments to support NIST’s FDS fire model.

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Hypothesis vs. Theory

http://www.diffen.com/difference/Hypothesis_vs_Theory September 15, 2017

A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors. A theory is always backed by evidence; a hypothesis is only a suggested possible outcome, and is testable and falsifiable.

Purpose: To present an uncertain possibility that can be explored further through experiments and observations. To explain why a large set of observations are consistently made.

From Out of the Abyss...

This week’s article from the past is titled Incendiary Fires Can Be Spotted and was written by Benjamin Horton, CPCU, who was President of the National Adjuster Traing School in Louisville, Kentucky..  It is taken from the Decembe 1968 Vol. XVI No.5 issue.

Incendiary Fires Can Be Spotted 

In the new issue of NFPA Journal®, President Jim Shannon said the Association will focus on the leading causes of home fires, including cooking. "We also need to continue to push hard for home fire sprinklers. That's still a large priority for NFPA, and we plan to work very aggressively in 2014 on our residential sprinkler initiative," he said.

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NFPA 921, Guide for Fire and Explosion Investigations plays a fundamental role in fire and explosion investigations. A new edition of NFPA 921 is scheduled to be published in 2014. For years, this document has played a critical role in the training, education and job performance of fire and explosion investigators. It also serves as one of the primary references used by the National Fire Academy to support its fire/arson-related training and education programs. It is imperative that investigators understand the scope, purpose and application of this document, especially since it will be used to judge the quality and thoroughness of their investigations.

NFPA 921, Guide for Fire and Explosion Investigations plays a fundamental role in fire and explosion investigations. A new edition of NFPA 921 is scheduled to be published in 2014. For years, this document has played a critical role in the training, education and job performance of fire and explosion investigators. It also serves as one of the primary references used by the National Fire Academy to support its fire/arson-related training and education programs. It is imperative that investigators understand the scope, purpose and application of this document, especially since it will be used to judge the quality and thoroughness of their investigations.

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SAN DIEGO - A Team 10 and Scripps News investigation found arson fires are not investigated properly in many American cities -- including San Diego -- due to a chaotic patchwork of reporting systems and standards.

Many deliberately set building fires are not reported to the federal government.

Nationally, just 5 percent of all residential building fires are intentionally set, according to the National Fire Incident Reporting System, which is part of the Department of Homeland Security.  Data collected by Scripps News suggests the national arson rate to be significantly higher.

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1 PCV Heater may Short Circuit (BMW of North America, LLC)
2 Blower Motor Wiring may Overheat (BMW of North America, LLC)
3 Cover Inside of Stove Top may Burn (Keystone RV Company)
4 Fridge Power Supply is Incorrectly Wired (Triple E Recreational Vehicles)
5 Subwoofer Wire may Overheat and Cause Fire (Subaru of America, Inc.)
6 Generator's Exhaust May Melt Plastic Underbelly (Forest River, Inc.)
7 Water Pump Leak may cause Fire (Forest River, Inc.)
8 Inverter Can Overheat Causing Possible Fire (Crestline Coach Ltd.)
9 Unprotected Circuit From Battery May Cause Fire (Jayco, Inc.)
10 Hydraulic Leveling System Line may Leak (REV Recreation Group)
11 Shackle may Contact LP Fitting and Cause LP Leak (Heartland Recreational Vehicles, LLC)
12 Transfer Switch may Fail (Keystone RV Company)
13 LP Line Damage may Result in Fire (Jayco, Inc.)
14 Battery Cable may Chafe and Short on Axle Yoke (Daimler Trucks North America LLC)
15 Battery Tray Separation Leaking Battery Acid (REV Recreation Group)
16 Fuel Filter Flange May Crack Causing Fuel Leak (Volkswagen Group of America, Inc.)
17 Fuel Pump Flange May Crack Causing Fuel Leak (Porsche Cars North America, Inc.)
18 Propane Line may have Insufficient Clearance (Forest River, Inc.)
19 Water Pump Leak may cause Fire (Chrysler (FCA US LLC))
20 Missing 2 Amp Fuse Could Cause Fire (KZRV, L.P.)
21 Electric Stabilizer Jacks not Circuit Protected (Keystone RV Company)
22 Transfer Switch may Overheat (Thor Motor Coach)
23 Propane Leak from Pinched LP Hose (Thor Motor Coach)
24 Auxiliary Heater Electrical Connector may Melt (Volkswagen Group of America, Inc.)
25 Spotlight Circuit may not be adequately Protected (PACCAR Incorporated)
26 Propane Leak from Improperly Installed Vent (Forest River, Inc.)
27 NHTSA - Gas Detection System Malfunction (Gillig LLC)
28 NHTSA - Reinforcement Bracket Missing from Fuel Tank ( Ford Motor Company)
29 NHTSA - Alternator may Fail Resulting in Engine Stall/Fire
30 NHTSA - Fuel Tank may have Cracked Control Valve (Chrysler (FCA US LLC))
31 NHTSA - Hydraulic Electronic Control Unit may Short (Newmar Corporation)
32 NHTSA - Hydraulic Electronic Control Unit may Short (Kia Motors America)
33 NHTSA - Compressed Natural Gas Fuel Leak After Fast Fill (Daimler Trucks North America LLC)
34 NHTSA - Shower Door may Increase Fire Risk/FMVSS 302 (Jayco, Inc.)A
35 NHTSA - Propane Gas Line may be Damaged
36 NHTSA - Power Control Module Short Circuit
37 NHTSA - Misrouted Fuel Line May Cause Fire
 
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