Forensic Engineering Investigation of An LP-Gas Installation And an Analysis Of Odor Fade

Abstract

The First Part Of This Presentation Is A Case Study Involving A Domestic Propane Gas System, Having A Buried Line Between The Supply Tank And The Residence. The Gas Line Was Pierced During A Landscaping Project. This Breach Was Undetected And Gas Leaked Underground; Migrating Towards The House Where It Entered Under The House. The Fugitive Gas Found A Source Of Ignition, Resulting In An Explosion And Death Of The Single Occupant. Odorant In The Gas Apparently Did Not Warn The Occupant. What Performance Improvements Correlate? Dot And Non-Dot Helmets Were Tested To Determine Impact Performance At Velocities Exceeding Standardized Testing Velocities. Three Types Of Dot Approved And Three Types Of Non-Dot Approved Helmets Were Tested At Two Speeds Outside Of The Federal Testing Standards In The United States. The Analysis Was Performed Using An Inverted Pendulum Sub-System Experimental Device With A Hybrid-Iii Anthropometric Dummy Cranium And Neck. Results Quantify The Performance By Category, Model, And Experiment By Test Metric.