Mr. Nolen is a mechanical forensic expert with over 36 years of experience as a Mechanical Engineer. His areas of expertise and trial experience include industrial and residential mechanical system and equipment failure analysis; explosion and fire analysis of LPG (propane and butane) and other flammable gas and liquid-related losses; fuel gas system analysis and testing; gas equipment and systems including pressure and vacuum vessels, regulators, relief, fill, control and cylinder valves, and residential and industrial appliances and their role in fires, explosions, and carbon monoxide production; stationary/mobile fuel distribution systems; industrial machinery; appliances and valves; heavy equipment fires and failures; residential and industrial HVAC and refrigeration systems; fluid mechanics; and heat transfer.