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

Darwin and natural selection, Darwin and Natural Selection: The Engli...

Darwin and Natural Selection: The English naturalist Charles Darwin (1809-1882) explained how biological evolution took place,  in his remarkable "The Origin of  Species" in

Define pollutants regulated under the clean water act, Define Pollutants Re...

Define Pollutants Regulated Under the Clean Water Act? The Federal Water Pollution Control Act (FWPCA) Amendments of 1972 later amended while the Clean Water Act (CWA) organize

Fst 01, describe briefly the scientific and technical achivement of the bro...

describe briefly the scientific and technical achivement of the bronze age

Phylum annelida, what is ment by general organization in phylum annelida

what is ment by general organization in phylum annelida

Explain rhythmicity - properties of a beating heart, Explain Rhythmicity - ...

Explain Rhythmicity - Properties of a Beating Heart Not only does the denervated heart continues to beat, it does so remarkably rhythmically. What it means is that the heartbea

Explain the emergency contraceptive pill (ecp) method, Explain the Emergenc...

Explain the Emergency Contraceptive Pill (ECP) method The ECP method or "morning after pill" uses a high dose of combined oral contraceptives (OCs) to prevent conception. The O

FST-01, #question: Describe the factors which decide the broad area of Scie...

#question: Describe the factors which decide the broad area of Scientific activity ?

Broad area of scientific activity, describe the factors which decide the br...

describe the factors which decide the broad area of scientific activity

Explain saponification, Saponification :- Fats when  boiled with  alcoh...

Saponification :- Fats when  boiled with  alcoholic solution of NaOH or KOH undergo hydrolysis into glycerol  and  fatty acids  and  the  latter  form  soaps with Na or K. The

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