Forensic Engineers and Consultants

Category Archive: Tips and Advice

The Paths of Chemical Exposure

The Safety Hierarchy states that hazards should be mitigated first by engineering controls, secondly by guarding, and lastly by warning/training.  When the first two, engineering controls and guards, fail in a manufacturing setting, a chemical release could occur. A forensic chemical engineer can help determine the root cause of that failure. Read More

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“Introduction to Event Data Recorders (EDRs)” LIVE Webinar | October 22nd, 11am EDT

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Accidents often have devastating consequences. Join WARREN’s Senior Collision Reconstructionist and President of S.C.A.R.S., South Carolina Association of Reconstruction Specialists, Aaron Duncan for an exclusive webinar on “Introduction to Event Data Recorders.”

Learn from an expert how the information stored in this valuable tool can be utilized to help get to the truth of your loss.  Information like:

  • Change in Velocity
  • Vehicle Speed
  • Service Braking
  • Steering Angle
  • Safety Belt Usage
  • Seat Occupancy
  • Engine RPMs
  • Engine Trouble Codes
  • PLUS, many case studies to consider.

Join us for this free, 45 minute + Q&A interactive webinar

CREDITS AVAILABLE: 1.66 Credits for South Carolina CLE and 2 Credits for Georgia DOI.

LIVE Interactive webinar. You don’t want miss this.

Register Now, Seats are Limited

 

 

What You May Not Know About Using a Concrete Test Hammer

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When assessing potential problems in concrete structures, consider a non-destructive test using the concrete test hammer, AKA “rebound hammer,” before investing a lot of time and money needlessly replacing or destructively testing the concrete structure.  The use of rebound hammer tests should be considered before you or your client decide to drill multiple core samples. Large areas of the concrete structure suspected of having potential strength problems can be tested quickly with a rebound hammer.  Analysis of those results can narrow down specific areas for more rigorous testing. Read More

The Demise of Insulation on Electrical Wiring

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Unlike fine wines and some types of cheeses, not everything ages well.  Such is the case with the materials used as insulation of electrical wiring.  While the copper metal used as the conductor in many wire types will last virtually forever, the cladding used to protect and insulate the wire allowing electrons to flow to their final destination does not. Read More

What’s Behind That CE Mark Part Three, Machine Guard Requirements

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In the first blog in this series, we discussed the story behind the CE mark, the Machinery Directive, and the associated requirements regarding the design, production, and sale of machinery bearing the mark. The second blog discussed a cornerstone of safer machine design, the risk assessment. This installment will discuss another crucial piece of the safety puzzle, machine guard design. Read More

Load Holding Valves in Hydraulic Cranes

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Hydraulic cranes absolutely rely on the integrity of their high-pressure fluid systems for safe operation.  A crane can become out of level when an outrigger cylinder leaks over time, possibly leading to a tip over.  A boom can collapse if a hydraulic hose ruptures.  It is not possible to absolutely prevent hydraulic cylinders from developing leaks or prevent hoses from rupturing during the life of a typical crane, therefore crane manufacturers provide load holding valves at key components to prevent these dangerous incidents.  In fact, ASME B30.5, Mobile and Locomotive Cranes, requires load holding valves or equivalent devices at outrigger cylinders, boom support cylinders, and boom telescoping cylinders. Read More

Ammonia – The Good, The Bad, The Smelly… Part Two

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Now that you know what ammonia is (see Part One here), how it behaves, and how to safely store it and work with it, let’s look at some areas in industry where it is used.

Anhydrous ammonia has a use in pollution control.  Industrial boilers and power plants burn coal or natural gas to make steam and/or electricity. When the fuel is burned using air as the oxygen source nitrogen gets exposed to the heat as well because air is 79% nitrogen.  The nitrogen gets oxidized and forms several compounds referred to as NOx (NO, NO2, NO3).  NOx compounds are harmful to Read More

The CE Mark and What Should It Mean to You? Part Two

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In the previous blog (Part One) we discussed the backstory behind the two stylized letters CE and what it means to the design of machinery bearing the mark.   We outlined some of the requirements of the “Machinery Directive” (MD) which include what are known as “Essential Health and Safety Requirements.” The Essential Health and Safety Requirements incorporate an iterative risk reduction process during design that takes into account Read More

Construction Techniques to Prevent Water Penetration at Windows

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Windows, and their interface with the exterior walls, are an important part of a building’s envelope that resists the intrusion of water. Most builders take many precautions to protect a house from water damage. One of the most important factors in keeping the water out is the installation of window flashing, a thin material that prevents water from seeping in around a window. Read More

Ammonia

Ammonia – The Good, The Bad, The Smelly… Part One

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Ammonia is a compound consisting of one nitrogen atom and three hydrogen atoms and is denoted by the formula NH3. Its boiling point is -28°F at atmospheric pressure, so unless it is under pressure, it is gaseous at room temperatures. Therefore, pure ammonia is typically stored under pressure in a liquid form. Household ammonia is only 5-10% NH3, the remaining 90-95% is water. Ammonia is extremely soluble in water. It is often depicted  like this: Read More

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