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

Plant Parts, Primary source from plants for humans and animals

Primary source from plants for humans and animals

Explain frequency and microwave power and speed of heating, Microwave Proce...

Microwave Processing Factors Frequency: There are two available frequencies for microwave heating - 915 and 2,450MHz; the frequency affects the depth of penetration into

What is ergonomics, Question 1 Define Epidemiology. Explain the types of e...

Question 1 Define Epidemiology. Explain the types of epidemiological studies with suitable examples Question 2 Discuss the various levels in the Indian healthcare delivery sy

BR and RM value of Ghee, what does mean of BR and RM value of ghee. why one...

what does mean of BR and RM value of ghee. why one should measure these parameters.

Life of a star, Life of a Star: A young star is thought  to be composed...

Life of a Star: A young star is thought  to be composed largely of  hydrogen gas. Hence, the most likely place for a star to be born is in one of  the numerous clouds of hydrog

Determine in brief about the soil texture, Determine in brief about the soi...

Determine in brief about the soil texture The texture is generally determined by the relative proportions of sand, silt and clay.  If various size fractions of the particles co

Heart massage for restoring circulation, Heart Massage for Restoring Circul...

Heart Massage for Restoring Circulation : In cases of breathing failure, you should check that the casualty's heart is still beating. This is especially important with victims of

Explain the process of freezing, Explain the process of Freezing Freezi...

Explain the process of Freezing Freezing, as a method, is the easiest, most  convenient and least time-consuming way of preserving foods. Freezing does not sterilize foods or d

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