Forensic Engineers and Consultants

Tag Archive: Warren Forensics

  1. Dive Into Suction Tank Issues and Inspections

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    Privately-owned water tanks supplying fire protection systems have a long history. The NFPA published the Standard on Gravity Tanks in 1909. It is one of the oldest NFPA codes, predating even the Life Safety Code’s precursor, the Building Exits Code, first published in 1927. The Standard on Gravity Tanks evolved over the years to become NFPA 22, Standard for Water Tanks for Private Fire Protection. The inspection, testing, and maintenance requirements for all types of private fire water storage tanks are laid out in NFPA 25, Chapter 9 – Water Storage Tanks. While there are about eight different types of fire water tanks, I’d assert that the most common type today is the steel suction tank. (more…)

  2. A Primer On The Elements Of Fire Protection Water Supplies

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    Get primed!

    Fire protection water supplies can be made up of one or more common elements, including tanks, pumps, water sources and water systems. Sometimes elements are used together to develop an adequate supply for fire protection.

    An adequate water supply for a fire protection system will meet the needs of the fire protection system (plus safety factor) in three terms: (more…)

  3. Hot ’til It’s Not Part II – Heating System Maintenance

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    As cold weather sets in for those of us that actually get a winter in the Northern Hemisphere, a property owner needs to think about another expensive home system that is often taken for granted, your HVAC system.

    Whether you have a heat pump with electric backup, a gas fired furnace, a fuel oil fired furnace, or even  electric strip heat, your heating system requires some routine attention to maximize efficiency and get the most life out of the unit.

    As a homeowner, the easiest and cheapest thing you can do to maximize the efficiency of your heating system is (more…)

  4. Civil Twilight Pedestrian Collision: A Case Study

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    Susan, a 45-year-old runner, was jogging in the early morning approximately an hour before sunrise, also known as “civil twilight.” Civil twilight occurs both before sunrise and after sunset when the sun is below the horizon and the sky is partially illuminated. Susan was wearing dark athletic clothing and grey tennis shoes for her morning run. She was running on the sidewalk in a suburban area and began to cross the four-lane road at an unmarked crosswalk. (more…)

  5. Turkey Fryers- Product Design is Critical to Consumer Safety

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    As the holiday season nears, thoughts turn to wonderful home-cooked meals with family.  Few things in life are more pleasurable than a traditional holiday turkey feast. Yet for an unfortunate few, holiday meal time can turn tragic if a turkey frying accident occurs.   While fried turkeys may be tasty, many fire safety experts feel that the reward is not worth the risk.  (more…)

  6. Warren’s Product Failure Evaluation & Laboratory

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    Many losses stem from a failure of a household appliance (i.e. dishwasher, water heater), plumbing component (supply lines and fittings), or HVAC system.  For over 25 years, Warren experts have utilized their diverse and highly specialized education, training and experience to investigate these types of losses.

    Warren conducts product failure investigations at our laboratory, where we evaluate and test items sent to us from across the United States. All testing and reporting is done by experienced and licensed professional engineers.  We have the facilities to provide for examinations ranging from a non-destructive examination of a single component to large multiple-party destructive examinations of complex systems. When needed, we provide a written protocol for complex or destructive examinations. (more…)

  7. Rainy Day Troubles: A Slip and Fall Case Study

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    An afternoon summer rain shower led to an elderly woman’s admittance to the hospital. Mrs. Jones, aged 68, entered a retail store to buy groceries for her visiting family. Mrs. Jones walked through the store’s vestibule toward the entrance where she slipped and fell, sustaining significant injuries. An investigation was conducted to determine the cause of the slip and fall incident.

    The investigation revealed (more…)

  8. Steam Explosions…Spectacular Expansions, Spectacular Losses

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    I’ve heard some people say that the term steam explosion is a malaprop because explosions involve combustion.  However, if you look up the definition of explosion, you get this: “a large-scale, rapid, or spectacular expansion or bursting out or forth.” (Thanks, Meriam-Webster!!)  If you’ve ever witnessed a steam explosion, you’ll agree that it is a MOST appropriate term!

    Steam explosions occur when water or other liquid undergoes a sudden phase change (more…)

  9. The 9-Cell Collision Matrix – The Environment

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    “Was a dark stormy night as the train rattled on…” Anybody? 1985? Scarecrow?  Come on… this was when Cougar was still a Mellencamp! Ok… it was called Grandma’s Theme… you’ll have to look that one up… but as I sat down to write this blog on the environment, that song kept running though my head. If you look it up, it will have a similar effect… just a little warning.

    In our last installment of the 9-Cell Collision Matrix let’s travel down the wet, slippery slope of environmental factors that can contribute to car crashes, and maybe take a closer look at the things around us, at or near our crash scene that may reveal some important clues. (more…)

  10. Surprise Slip and Slides  

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    Falls were the number one cause of preventable non-fatal injuries and the number two cause of preventable deaths in the US in 2019 (CDC and NEISS data). Slip and falls occur when there is an unexpected loss of traction between a person’s foot and the walking surface.  Slip and falls are common and can occur in any setting where people walk, including homes, workplaces, and public areas. Slip and falls can result in serious injuries, particularly for older adults.

    The human gait cycle consists of four phases: (more…)

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