Forensic Engineers and Consultants

Tag Archive: chemical

  1. P&ID’s, If You Please – Piping and Instrumentation Diagrams Explained

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    When investigating an industrial incident, one piece of information I always ask for is the relevant P&ID’s for the process.  P&ID stands for Piping and Instrumentation Diagram and is defined as “A schematic diagram of the relationship between instruments, controllers, piping, and system equipment.” A set of P&ID’s for an entire facility allows you to trace the entire manufacturing process from raw material unloading to finished product loadout, including utilities like steam, water, fuel, and air. That’s great information to have, but isn’t especially useful (more…)

  2. 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 (more…)

  3. Not Your Father’s House Fire

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    Remember the good old days when our homes were built with only lumber, dry-wall, and roofing?   Me neither.  However, we talk about ‘modern’ construction materials like this is a new phenomenon.  The truth is ‘modern’ construction materials started sneaking into homes over fifty years ago.  It’s not only construction materials that have changed: a century ago, we furnished our houses with wood, cloth, metal, and glass. Today, it’s plastics, foams, and coatings.

    (more…)

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