Foam extinguishers, Science

Assignment Help:

Foam extinguishers :  If the burning liquid is in a container the jet should be directed at the inside edge of the vessel or at a vertical surface in order to break the jet and allow the foam to build up and spread across the surface of the liquid (Figure). If this is not possible, the correct procedure is to stand well back (perhaps as far as 6 or 7 m) and to direct the jet with a gentle sweeping movement to allow the foam to drop down and form a layer on the surface of the liquid (Figure). Do not aim the jet directly into the liquid as this will drive the foam under the surface where it will be ineffective in extinguishing the fire and may spread the fire by splashing the liquid on the surroundings.

923_Use of foam extinguisher-I.png

Figure: Use of foam extinguisher-I. Fig.12.4: Use of foam extinguisher-11.


Related Discussions:- Foam extinguishers

Erosion, where can glacier erosion occur?

where can glacier erosion occur?

Decline of european science, Decline of european science: By the middle...

Decline of european science: By the middle of  the second century B.C., the Greek empires were collapsing in  anarchy andunder the weight of  the more vigorous power of Rome. I

Introduction to fire hazards, INTRODUCTION : In the first unit of this blo...

INTRODUCTION : In the first unit of this block you read about hazards due to electricity and gases in the science laboratories. 'The second unit deals with yet another type of com

Experiment of the buoyancy of water, Another way to observe the buoyancy of...

Another way to observe the buoyancy of water Push a large cork to the bottom of a pail of water. Notice the quantity of force you have to apply to hold the cork at the bottom.

Objectives of identification of compressed gases , Objectives After doi...

Objectives After doing this exercise you should be able to: 1.  Identify the contents of the gas cylinder by observing the colour code, 2.  State the nature of the gas pr

Volanoes, what are the causes of volcanic eruption ?

what are the causes of volcanic eruption ?

.metals, Disadvantages of cold working metals (point form pliz)

Disadvantages of cold working metals (point form pliz)

Define the factors that are affecting colour perception, Define the Factors...

Define the Factors That Are Affecting Colour Perception The two most important factors which influence colour perception include: Temperature, and Humidity How do these factors

Mirrors and Lenses, I dont understand anything. Please explain the whole le...

I dont understand anything. Please explain the whole lesson

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd