Legear Engineering F.D. Consulting

Chief Garrett de Jong thank you for the gifts, and I am glad the conversations with you and staff lead to better performance through spec and layout of equipment on the fire ground related to your Engine Design. I am not a fan of CAFS, but the auto fill tank valves they spawned have their place, and I am now moving towards a more custom design in future builds (large pass through volumes) in a few variants based on departmental needs, build environment and staffing, plus water supply evolutions, hydrant pressures , net pump pressures mixed with low pressure attack packages, and added benefit in rural nurse tendering ops. I am very happy to receive these nice gestures and coffee. Thanks.

Well sad days no more 16 inch discharge pipe from Akron. This and a simple deluge tip, combined with a 1250gpm 200psi 900lbs RF rated 3 inch deck gun waterway was one of the items that made 0-200psi NP for a 1.5-inch tip the velocity monster of heavy streams from the Engine. Roughly a rounded performance of 50 psi @ 500gpm to 200 psi @ 1000gpm from 85fps (60 mph) to 170fps (120 mph).

Fire Nuggets 2021 mission and moving forward. Take a look at all those state affiliates on line and coming on line. Great organization for the fire service.

https://firenuggets.regfox.com/21-cf-tactics-webinar-series My session January 16th, 2021 - 2000 EDT Handline Hose Spec, the Missing Knowledge and Understanding needed after Nozzle Selection that will make or break your Handline Fire Attack Package ... ($10.00) [Only 10 remaining] Description: This class will first go over the benefits of reducing nozzle pressure and focusing on GPM while establishing a diminishing return range in both directions regarding application rate, stream velocity / nozzle pressure and reach in both large and small handline attack packages. It will then briefly cover the concepts of ideal pump plumbing design, pressure pickup locations and outlet gauges on the pumping engine. Once those are established the class will then focus on the need to properly spec handline hose to ensure that the handline attack-package system works in concert with the fire attack team. This will spotlight and dive into handline hose spec that assists and supports lengthy bail open time (when needed), flowing mobility, allowing pre loading advances, low charged hose weight, while allowing only minimal kinking that restricts water flow, and ensuring water application capabilities in a true 90 degree up, right and left fashion with minimal risk of nozzle whip. It takes all three of these areas to get a gold standard handline attack package, proper nozzle selection, proper discharge pressure and proper hose spec. The last item the handline hose itself, is vastly misunderstood in my opinion and represents the largest challenge to get right facing most rank and file members when trying to advocate for a proper handline attack package for their fire departments.

My thoughts based on both research and field experiences...."Cool Droplets" increases the thermal blast of the room, the return from a critically redundant flow, lower velocity handline solid or straight developed fire stream allows the cool droplets to quickly reach the lower areas of the fire compartment to do work, what's not to like? This is while the stream is simultaneously cooling the overhead, creating gas contraction and lift. These "cool droplets" are not "wasted w...ater" in fact their mass is one of their best traits, not easily over common by heat and the thermal columns as they make their way to hot and burning surfaces to rapidly cool and extinguish with less negative impact on those operating and occupying the interior. The most effective use of water, is not always the most efficient, when maximizing life saving and property preserving potential of handline fire stream development. This phenomenon also decreases the risk of rapid change in fire behavior in the stream impacted areas creating a lower risk environment during suppression. Simply put "Don't be stingy with the solution" Ray McCormack