911-we_shall_never_forget-memorial
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Abstract Forest fires are generally consciously or unconsciously the work of man for various reasons. Fires generated by voltaic arc between power lines and the underlying trees do not occur often. These few cases may be only demonstrated by analyzing around the site where the arc may have been generated. Material such as leaves, bark and soil can be analyzed to find the metallic residues from the fused cables. The electrical cables usually composed of aluminum or copper alloys, when involved in an electric arc may spray fused micro-drops of metals, increasing the natural level of such elements. In two cases, the Al and Cu concentrations were increased by between 2.56 to 13.9 times the background levels. Electron microscopy of leaf surfaces has identified some profound alterations produced by the intense heat of the electrical discharge.

Abstract

Forest fires are generally consciously or unconsciously the work of man for various reasons. Fires generated byvoltaic arc between power lines and the underlying trees do not occur often. These few cases may be only demonstratedby analyzing around the site where the arc may have been generated. Material such as leaves, bark and soil can beanalyzed to find the metallic residues from the fused cables. The electrical cables usually composed of aluminum orcopper alloys, when involved in an electric arc may spray fused micro-drops of metals, increasing the natural levelof such elements. In two cases, the Al and Cu concentrations were increased by between 2.56 to 13.9 times thebackground levels. Electron microscopy of leaf surfaces has identified some profound alterations produced by theintense heat of the electrical discharge.

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In 2009-2013, U.S. fire departments responded to an estimated average of 56,000 structure fires per year in homes that involved heating equipment. These fires resulted in annual losses of 470 civilian deaths, 1,490 civilian injuries, and $1.0 billion in direct property damage. These homes included one- and two-family homes (including manufactured homes) and apartments (including townhouses and other multi-family dwellings). Space heaters are the type of equipment most often involved in home heating equipment fires, figuring in two of every five fires (40%). The fires involving space heaters accounted for 84% of the civilian deaths and 75% of civilian injuries in home fires caused by heating equipment, as well as over half (52%) of direct property damage. Another one-third (32%) of fires involved a fireplace or chimney, but these fires accounted for a much smaller share of civilian fatalities (5%) and civilian injuries (6%). Central heat and water heaters were responsible for 12% and 10% of home fires caused by heating equipment, respectively.

Abstract

In 2009-2013, U.S. fire departments responded to an estimated average of 56,000 structure fires per year in homes that involved heating equipment. These fires resulted in annual losses of 470 civilian deaths, 1,490 civilian injuries, and $1.0 billion in direct property damage. These homes included one- and two-family homes (including manufactured homes) and apartments (including townhouses and other multi-family dwellings).Space heaters are the type of equipment most often involved in home heating equipment fires, figuring in two of every five fires (40%). The fires involving space heaters accounted for 84% of the civilian deaths and 75% of civilian injuries in home fires caused by heating equipment, as well as over half (52%) of direct property damage. Another one-third (32%) of fires involved a fireplace or chimney, but these fires accounted for a much smaller share of civilian fatalities (5%) and civilian injuries (6%). Central heat and water heaters were responsible for 12% and 10% of home fires caused by heating equipment, respectively.

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Automobile engine coolant related fires may result from engine coolant leakage, an increase in the concentration of the glycol in the water/glycol mixture, the nature of the vapor/particle distribution, and contact with an ignition source in the engine compartment. Ethylene glycol, a common coolant, is a flammable liquid with an ignition temperature near 800F. In recent years, propylene glycol is being used because of environmental reasons. Propylene glycol is also a flammable liquid with an ignition temperature near 700F. In an automotive application, the glycol is mixed with water at about a 50/50 ratio. Ignition of this concentration of coolant is difficult because of the water. When released at high temperatures into the atmosphere where the water evaporates, the glycol vapor/liquid droplets can reach the state of an ignitable mixture. Typical ignition sources in the engine compartment include hot surfaces (exhaust manifold, exhaust system) and electrical components (relays, distributor, spark plug wires). Automobile accidents, resulting in hot vapor expulsion from the coolant system, are also known to cause fires.

By Charles C. Roberts, Jr., Ph. D., P.E.

Automobile engine coolant related fires may result from engine coolant leakage,an increase in the concentration of the glycol in the water/glycol mixture, thenature of the vapor/particle distribution, and contact with an ignition source inthe engine compartment. Ethylene glycol, a common coolant, is a flammableliquid with an ignition temperature near 800F. In recent years, propylene glycolis being used because of environmental reasons. Propylene glycol is also aflammable liquid with an ignition temperature near 700F. In an automotiveapplication, the glycol is mixed with water at about a 50/50 ratio. Ignition of thisconcentration of coolant is difficult because of the water. When released at hightemperatures into the atmosphere where the water evaporates, the glycolvapor/liquid droplets can reach the state of an ignitable mixture. Typical ignitionsources in the engine compartment include hot surfaces (exhaust manifold,exhaust system) and electrical components (relays, distributor, spark plug wires).Automobile accidents, resulting in hot vapor expulsion from the coolant system,are also known to cause fires.

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Abstract

In this paper, we review the research results about the identification of the electrical fire trace evidence and the fire reason recognition. We point out the existing problems and put forward the corresponding suggestions to promote the development of the cause of the fire investigation and make it better to serve for the work of fire investigation.

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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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Surviving fires: How common mistakes can lead to devastating fires

Shared by Jamie Novak, St Paul Fire Department

Surviving_firesCOON RAPIDS, Minn. - Fire does not schedule home visits, nor do firefighters arrive by appointment.

In the interest of fire safety, we decided to change that.

During two days of shooting, a crew of firefighters and KARE 11 photographers with a dozen cameras gathered at the most deadly place for fires in Minnesota: home.

Jamie Novak, a St. Paul Fire investigator, helped us locate a three-bedroom rambler in Coon Rapids that was already scheduled for demolition.

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Cooking fires: do you know what to do?

Shared by Jamie Novak, St Paul Fire Department

cooking-oil-fireST. PAUL, Minn. - If anyone knew her way around a kitchen, it was Wille Mae Coleman. No one could count the number of times she'd fried chicken for supper. Then last August, alone at the stove in her apartment, the 75-year-old grandmother died doing it.

"I vividly remember getting the phone call," says her son Don Coleman, somberly. "Very difficult, that's my mother." Wille Mae suffered serious burns on 70 percent of her body. He was with his mother at Regions Hospital when she died.

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Investigators: Fire safe smokes?

Shared by Jamie Novak, St. Paul Fire Department

safe_smokesMysterious house fires are happening a lot more than officials had expected, and so-called "fire safe" cigarettes are a common culprit.  FOX 9 Investigator Jeff Baillon found the special paper that's supposed to "self-extinguish" can still be a smoldering risk, and lawmakers are now looking into it.

Watch the video

Sun, vodka bottles start fire inside Burnsville liquor store

Shared by Jamie Novak, St. Paul Fire Department

by Maury Glover

Vodka-fireBURNSVILLE, Minn. (KMSP) - Burnsville fire officials say they've never heard of so-called firewater could become a starter without the aid of a match or spark, but that's exactly what happened when vodka bottles magnified sunlight and started a fire inside Red Lion Liquors.

The store has been in Burnsville since 1978, and it's occupied its current building for the past nine years. They have bulletproof glass to stop burglars and vandals from breaking in, but that couldn't' protect them from a problem that started inside.

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The Goal is Truth

By Paul Francois & Enrique Garcia
Third Degree Communications

When testifying in court as to the manner in which we conducted an interview, defense counsel will often ask us whether we just wanted his client to "confess." We answer that we do not seek confessions  but rather truth. After all, no good cop is interested in false information, only truthful information. That is why our motto at Third Degree Communications is "Nothing but the Truth."

One little tidbit we impart on our students to help convey this concept is by reminding them that if obtaining the truth is their ultimate goal, then they should be doing nothing that might prevent them from obtaining the truth. For example, getting angry with a subject who is lying would most likely sever rapport and interfere with accomplishing the goal of obtaining the truth. Raising my voice, insulting him, or speaking to him in a condescending manner are all most likely going to be rapport killers that will stymie my ability to get to a successful and truthful outcome with the subject. If we want to get people to provide us with truthful information, we should avoid doing anything that will interfere with accomplishing this goal.

This actually applies to many areas of our lives if we think about it. Let's say I've made a new year's resolution to avoid gossiping about other people. There are several steps I can and should consider that will help me accomplish this goal, including but not limited to:

  •  Avoiding certain people who I know thrive on gossip
  • Not asking certain questions that are more likely to lead to gossip, such as "Who did that?" "What are you guys talking about?" "What happened next?"
  • Excusing myself from conversations that turn in the direction of gossip

In the same manner, if my goal is to obtain truthful information, I must only engage in behavior that's more likely to help me accomplish this goal and to avoid behavior that will interfere: 

  • Treating people with dignity and respect
  • Manipulating my tone of voice to maximize my effectiveness
  • Establishing rapport
  • Being a compassionate, empathetic listener
  • Projecting an image of being non-judgmental and accepting

 

Getting people to tell the truth means creating an environment that is conducive to helping them cooperate. Obtaining our goal means everything that I say and do is oriented toward achieving that goal. It's a remarkably simple concept, but a critical one to remember throughout the interview.

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