2022年6月7日 · A fire main is a dedicated pipeline installed within a facility or building to provide a reliable supply of water for fire suppression purposes. It acts as the backbone of the fire protection system, distributing water to various fire hydrants and …

2018年4月16日 · A fire main system must have at least two independently driven fire pumps that can each deliver water at a continuous Pitot tube pressure of approximately 50 psi through at least two fire hose nozzles that are connected to the highest two fire hydrants on the unit.

2021年11月19日 · Standpipe systems can be broken down into different types of systems to delineate whether the piping is full of water (wet) or not (dry) and whether the water supplied for firefighting is automatically provided by a water supply, such as a city main or a tank and fire pump (automatic or semi-automatic), or needs to be provided by a fire ...

2020年6月19日 · The rising fire main is an important facility for the fire and rescue service in taller buildings. It consists of an inlet box where fire-fighters can connect their hoses, a pipe running up through the building, outlet valves on each floor level and an air vent at the top.

BS9990:2015 states that: Dry fire mains should have an operating pressure of 12 bar. A dry fire main should be fitted with a two-way inlet breeching for 100 mm mains. Each breeching should conform to BS5041-3 and be located in an inlet box conforming to BS5041-5, the enclosure must be between 400 mm and 600 mm above ground level.

A rising main is a vertical pipe with an inlet on the outside of the building and outlets on every floor. The outlets are inside cabinets, which allow firefighters easy access. In case of a fire, firefighters pressurise the main so that there is a free flow of water.

(h) If a vessel uses main or auxiliary oil fired boilers or internal combustion propulsion machinery, and is required to have two fire pumps, the pumps must be in separate spaces and the arrangement of pumps, sea connections, and sources of power must be arranged to ensure that a fire in any one space will not put all of the fire pumps out of ...

There are many factors to consider when installing fire alarm wire, raceways, boxes & cabinets comprising a fire alarm system. • Environments are wide-ranging and too numerous to identify. Please consult the International Building Code.

(a) A fire hose with a nozzle must be attached to each fire hydrant at all times. For fire hydrants located on open decks or cargo decks, where no protection is provided, hoses may be temporarily removed during heavy weather or cargo handling operations, respectively. Hoses so removed must be stored in nearby accessible locations.

2021年1月10日 · This document summarizes the key aspects of a ship's fire main system, including: - Types of fire main systems like single and looped main lines. - Advantages of using water like its cooling effects and ability to smother fires. - Requirements for fire pumps, capacities, and locations including at least two pumps and one emergency pump.