In this episode Dennis LeGear explains why modern hose coefficients can be tricky and why it is important to test your own fire attack system.
INSTRUCTOR PROFILE - Dennis LeGear
Dennis LeGear, retired Capt. Oakland, CA. holds both an AS Degree in Fire Science and Bachelors in Vocational Education from CSU Long Beach. He also held the position of Water Supply Officer in the OFD, and advised the Engine and Truck Committees in pump spec, hose & equipment lay out, compartment / hose bed spec as it related to fire stream development. In addition he was a hose and nozzle instructor at many in house academies, plus an adjunct professor in the same capacity at the College of the Siskiyous in California. His fire service career included time at Cal Fire, Kings County and the City of Oakland.
Owner of LeGear Engineering F.D. Consulting (L.E.F.D.C), creator of the 1 3/16-inch smooth bore nozzle and TRU hose spec. A panel member of the UL Study of the Impact of Fire Attack Utilizing Interior and Exterior Streams on Firefighter Safety and Occupant Survival. Currently Manages/Project Lead of a national "Engine Test Group" composed of industry experts, which are involved in both the L.E.FDC "True Hose Project" the "1 3/16th-inch tip” 295gpm@50psi Project, and “Smooth Bore Matching Fog tips @50si NP” project.
His company has provided technical advice to some of the largest fire agencies in the nation including, Portland, Seattle, Boston and the City of New York. He has also consulted with water municipalities assisting in the development of emergency response plans for a variety of water infrastructure problems related to seismic events and other disasters. Author/Proposal Reviewer (Book Div. PennWell Publishing) Author of Fire Engineer FF I&II Handbook, Water Supply and Hose / Appliance Chapter.
Over pumping and under pumping handline nozzles can be seen as both an asset or liability depending on the end goal.
As the American Fire Service keeps trending towards high flow, low pressure attack packages it is important to understand what Dennis LeGear refers to as ‘gold standard’ for fire stream development in this episode.
Extending hose lines can be done in a variety of different ways on the fire ground.