Fire hoses

Fire hoses

Industrial Polymers

Published in Manas Chanda, Plastics Technology Handbook, 2017

The turbulent flow of water through pipes and hoses or over surfaces causes the effect known as hydrodynamic drag. High-molecular-weight poly(ethylene oxide) resins are most effective in reducing the hydrodynamic drag and thus find use in fire fighting, where small concentrations of these resins (50–100 ppm) reduce the pressure loss in fire hoses and make it possible to deliver as much as 60% more water through a standard 2.5-in. (6.35-cm)-diameter fire hose. The Union Carbide product UCAR Rapid Water Additive, which contains high-molecular-weight poly(ethylene oxide) as the active ingredient, is a hydrodynamic-drag-reducing additive for this application.

A basic study on standardization of fire-fighting drill scenarios on board

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Journal Information

Published in Journal of International Maritime Safety, Environmental Affairs, and Shipping, 2019

Hyosang Sim, Weon-Jae Ha, Young-Soo Park

The purpose of fire-fighting drill is to carry out fire-fighting work as trained when actual fire occurs. However, it is doubtful whether the fire-fighting drill can be performed well as trained. As shown in this study, when the water pressure is applied to the fire hose, it becomes difficult for fire-fighters to handle fire hoses to reach to the fire scene. In addition, the elapsed time from fire alarm to ready for fire work at the fire scene is very important considering the speed of fire spread. It is also important to consider the fire-fighter’s safety. Once the fire-fighter is inside the engine room or other fire scene, the rate of air consumption is very high due to the hard work. Therefore, it is necessary for the captain or chief officer to have basic information for retrieval time of fire-fighters inside the fire scene.

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Industrial Polymers

A basic study on standardization of fire-fighting drill scenarios on board