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

How are electrons arranged around the nucleus, How are electrons arranged a...

How are electrons arranged around the nucleus? Electrons are arranged into very specific rings known as orbitals. Electron orbitals, sometimes referred to as electron shells, c

Procedure of unserviceable and obsolete items, PROCEDURE 1. Assume tha...

PROCEDURE 1. Assume that your Counsellor is the Head of the Institution. 2. Your Counsellor will choose three of you and form a Survey Committee as follows: one of yo

Explain vagus nerve - neural control of respiration, Explain Vagus Nerve - ...

Explain Vagus Nerve - Neural Control of Respiration The rhythm and depth of respiration are controlled by the reflexes from the vagus nerve. When the lungs are inflated, the

Enumerate about the forest and hill soils, Forest and hill soils The hi...

Forest and hill soils The hill and forest soils seem to be akin to soils developed in humid temperate regions, and have been found to include podsolised  soils, brown Earths an

Explain the ketone bodies - abnormal constituent of urine, Explain the Keto...

Explain the Ketone bodies -  abnormal constituent of urine Ketone body is an intermediate breakdown product of fats in the body. It can be any of three compounds (acetoacetic a

The eye, what isthe optic nerve

what isthe optic nerve

Explain differentiated cells in an organism, Explain Differentiated cells i...

Explain Differentiated cells in an Organism These are the post-mitotic cells, which have undergone specialization and/or exhibit the division of labor. Therefore, these cells a

Mineral has the name "bloodstone", This mineral has the name "bloodstone" b...

This mineral has the name "bloodstone" because it provides a deep red color on a streak test. What is its chemical formula? Fe 2 O 3

Explain internal defence mechanism, Explain Internal Defence Mechanism ...

Explain Internal Defence Mechanism Body's internal defence mechanism is carried out by white blood corpuscles (WBCs), macrophages, inflammatory reactions, fever, interferons, c

Mini-mental state examination - mmse test, MMSE To assess Mr. X's orient...

MMSE To assess Mr. X's orientation, language skills, constructional ability, memory, calculation ability, and reasoning, he was administered the Mini-Mental State Examination -

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