1. Physics and chemistry both describe– A. Behaviour of matter. B. Non behavior of matter. C. None. 2. Chemistry may describe the – A. Chemical composition. B. Mechanical material. C. None. 3. Liquids may change to a vapour at temperatures A. Below their boiling points. B. Upper their boiling points. C. None. 4. Chemical fuels… Read More »
KNOTS, HITCHES AND BENDS Knots must be tied, dressed (cleaned up so there are no twists, and the knot flows correctly with the tension on the correct strand) and set (tensioned to remove any slack in the knot). Do not fall into the trap of “the myth of knot strength.” While it is of interest… Read More »
Rope: In the Fire Service, the knowledge of how to tie and use knots is essential. While there are many knots available, the following knots described in this section should be adequate to meet the needs of Seattle fire fighters in most situations. Keep in mind that it is more important to be able to… Read More »
Extension Ladder: Extension ladders are non-self-supporting ladder with adjustable length. You can adjust of extension ladders by your requirement. It’s not the walking under the ladder that brings you bad luck. It’s the wrong choice of ladder that brings misery crashing down on you. Choosing the right ladder for your project, you must consider four… Read More »
Ladders: A ladder is a vertical or inclined set of rungs or steps. There are two types: rigid ladders that can be leaned against a vertical surface such as a wall, and rope ladders that are hung from the top. The vertical members of a rigid led are called stringers or rails rigid ladders are… Read More »
Fire alarm system: A fire alarm system consists of one F. A., panel which detects the entire state of the system glass enclosed switches called manual call point (M. C. P. S), and audio alarm here in for pounding in alarm, public addressing speakers, a set of battery and the carding which connects all these… Read More »
Hose reel: The hose reel needs tube secured tow all or post using the mounting bracket or to the ground (using the Ground Driller Mounting). A Hose Reel is a cylindrical spindle made of either metal, fiber glass, or plastic and is used for storing a hose. The most common styles of hose reels are… Read More »
Primers: Primers used to exhaust air from the suction and the casing. Various types of the primers are discussed here. devices. After the pump is primed the at morphemic pressures able to force the water to reach the pump entry. Various types of the primers are:- Reciprocating Primers: These are reciprocating pumps which develop higher-pressure… Read More »
Introduction Centrifugal pumps a machine which raises water or any liquid from a layer level to a higher level and from one place to another by the action of centrifugal force. For controlling major fires large quantities of water at higher-pressure is needed. Centrifugal pumps are employed generally for the purpose. Centrifugal Force: It is… Read More »
A fire hydrant designed to supply huge amounts of water to fire trucks, very quicky. whenever and wherever fires break out. A typical hydrant has up to four nozzles, one on each side, to which up to four sturdy fire-hoses can be tightly screwed. To prevent tampering, the nozzles are chut by pentagonal (five-sided) nuts… Read More »