Can you imagine framing a house with the tools of our forefathers, using hand saws and hammers, rather than power saws and pneumatic nail guns? Power tools have made the job much easier and faster, that even the amateur is well equipped for this kind of work. Read More
Over the course of its 25-year history, NFPA 921 Guide for Fire and Explosion Investigations has changed the practice of fire investigation for the better. Without a doubt, NFPA 921 has appropriately driven a more rigorous approach to fire investigation that seeks to avoid cognitive bias and reliance on techniques that, when rigorously examined, are little more than pseudoscience. One need look no further than the Cameron Todd Willingham matter, wherein a Texas man was executed in part based on a flawed fire investigation, to understand the importance of conducting a proper fire investigation. Read More
As the weather turns cold, many people use fireplaces to provide supplemental heat. The warmth from a fireplace is a comfort and the aesthetics of a glowing fire are a pleasure. However, there is nothing pleasurable about a residential house fire that results from an improperly built or used fireplace or chimney. Read More
Emergency generators are often called into service during catastrophic events like hurricanes, floods, tornadoes or fires, but also during more mundane events like thunderstorms and other things that may temporarily interrupt the public power grid. Can you rely on your generator to perform at those critical times? Read More
It is fairly common knowledge that the use of dissimilar metals in plumbing systems can quickly result in a leak due to a corroded pipe or fitting. Read More
The wet, relatively warm weather recently experienced in the southeast has caused a high incidence of mold and other fungal growth complaints in homes and other structures. Engineers at Warren are often called upon to investigate the cause(s) of these problems. Read More
When fires occur, the effect on people’s lives is often devastating. This is especially true with fires that cause the death of a child. Clearly it is important to try and find the causes of such fires so that they can be prevented in the future. In such circumstances, it is especially important to follow a rigorous methodology in investigating the origin and cause of a fire. Investigators following a less than rigorous methodology may reach improper conclusions. Such was the case in a devastating fire investigated by Warren that was improperly alleged to have been caused by a supposedly defective product, a small electric space heater.
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Industrial ovens and furnaces are used in many manufacturing processes. One use of industrial ovens is for drying and curing coatings on fabrics.
We investigated a fire loss involving a very large oven, 10 stories high, used for curing coatings on an industrial fabric. A young firefighter was burned in response to this fire, one of a string of many fires that had occurred involving the oven.
Pressurized cylinders filled with various gases are very common, from the propane fuel tank under your barbeque grill to acetylene for welding to fluorine for production of many common products. A leak from almost any of these can cause damage or significant losses, from a fire to physical injury, or asphyxiation.
Owner protection against losses and injury can range from nothing to significant, such as storage in ventilated closets or gas detection alarms. In one case the regulator valve on a small CO2 cylinder used in a bar to pressurize beer kegs broke off. The cylinder rocketed around the bar room, causing at least one serious injury. Read More
One area that we have found particularly interesting are fires involving Corrugated Stainless Steel Tubing (CSST). CSST is a material used to plumb fuel gas inside structures. It is used as an alternative to traditional black steel pipe or copper tubing. The stainless steel tube of CSST, in certain circumstances, will perforate when subjected to electrical arcing, including that due to local lightning strikes. The escaping fuel gas from these perforations has obvious implications as to causing fires. Read More
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