Train Your Probie
Do you know the Melting/Failure Temperatures of Fire Service PPE?
Here are a few nuggets that you may find interesting:
SCBA Composite Bottles 1700 degrees Fahrenheit for 10 seconds and still function.
SCBA Facepiece: 446 degrees Fahrenheit Polycarbonate Melts (Fails at 20 kW/m2 heat flux).
"SCBA lens's exterior surface temperature reached 280 degrees Celsius (536 degrees Fahrenheit), about the midpoint of the range of published polycarbonate melt temperatures. The lens developed a significant hole, according to the NIST report." (A Mensch, G Braga and N Bryner, Fire Exposures of Fire Fighter Self-Contained Breathing Apparatus Facepiece Lenses. NIST Technical Note 1724, Nov. 2011. The report can be accessed at www.nist.gov/manuscript-publication-search.cfm?pub_id=909917.
Firefighter Radios- The failures occurred while the radios were subjected to a temperature of 160 degrees Celsius (320 degrees Fahrenheit), termed Thermal Class II conditions.** The temperature is representative of a fully involved fire or conditions outside a room when its contents burst into flames simultaneously, a phenomenon known as flashover.
Credit: Instructor Andy Starness