Fire ratings are designed to indicate the type of fire that must be used, and to give an indication of the effectiveness that each fire extinguisher be. qualification in expressed as a series of numbers and letters indicating the kind of fire that can be used in fire size are suitable for.

The different Fire types are classified by different letters, and fire extinguishers can display multiple skill cards, and that can be used in more than one type of fire. In terms of the magnitude of the fire extinguisher can be used in a number that gives an indication of this, and in general, the higher the number, the greater the extinguisher fire it can handle.

The numeric part of the qualifications of a fire extinguisher directly related tests to measure their effectiveness. A test of the wood crib is a test used to measure how big a fire extinguisher extinguisher can deal with. rating of 13, for example, indicates that the extinguisher was able to make the 1.3 million The number fire. a number of fire extinguishers is therefore a very precise indication of what each can do extinguisher front.

As another example of the numerical rating, the test to measure the effectiveness of fire extinguishers for use on flammable liquids refers to the surface Approximate square footage of fire which is capable of specific tests extinguish. vary different kind of fire, but the basic system of accurately measuring the extinguisherâ ™ € s effectiveness is the same.

It seems obvious to think that the number in a fire extinguisher will increase with the size of the extinguisher. This is generally true, but size is not the only factor that effects the number in rating. extinguishers fire extinguisher with water, additives are mixed often with water to increase its effectiveness, so there could be two fire extinguishers, which are the same size but have different numerical grades, because one is more effective than the other.

Fire Ratings â € "The UK and U.S. differences

As already mentioned, the letters used in fire extinguisher ratings refer to the classes of fire that can be safely used on. We therefore have to look at these classifications of fire first, before looking at the actual scores of fire for different types of fire extinguisher.

1. The following are the main Classifications of fire with U.S. classes shown in brackets:

Class A fires (also a Class A U.S.)

Any fire involving solid materials such as wood, cardboard, paper, cloth, etc.

Class B fires (including Class B in the U.S.)

Class B fires involve flammable liquids such as kerosene, oils, gasoline, paints, diesel, etc.

Class C fires (comes in Class B USA)

A separate classification, except in the U.S., this category is for flammable gases, including butane, methane, etc.

Fires Class D (also Class D in the U.S.)

The D rating is for combustible metals or alloys, such as potassium, magnesium or titanium.

Electrical fires (Class C, USA)

Electrical fires are known as Class E in the UK, but this is an error because there is no separate classification for electrical fires in the UK.

Class F fires (Class K in the U.S.)

Specifically refers to fires fryers (fats and oils).

Ratings of fire extinguishers:

The following information shows the classes of fires covered by the IPOS different fire extinguisher:

Main fire extinguisher ratings shown refer to the UK, with U.S. rates parentheses.

Water extinguishers:

Classes of fire: A

(Class A in USA)

Carbon dioxide extinguishers:

Classes of fire: electrical fires, A, B and C

(A, B and C in the U.S.)

Dry powder extinguishers:

Fire classes: A, B, C and electrical fires

(A, B and C in the U.S.)

Wet Chemical Extinguishers:

Fire classes: A, F

(A and K in the U.S.)

Foam extinguishers:

Fire classes: A and B

(A and B in the U.S.)

Ratings of fire extinguishers – Conclusions

Understand the kinds of fires and ratings extinguisher is important to ensure that you use the correct type of fire extinguisher in any fire in his workplace. can be very dangerous to use the wrong type fire extinguisher in some fires, one of the most obvious examples is the use of water in an electric fire. Therefore, adequate staff training is important for all personnel are required to use fire fighting equipment.

About the Author:

Read more advice and information about different fire extinguisher types, how to use extinguishers and fire classifications. K Garrow has managed large public buildings for the last twenty years and has extensive experience of workplace safety issues. His website offers free advice on a range of subjects, including fire risk assessment, PAT testing, staff training, disaster planning, emergency lighting and safety signs.

Article Source: ArticlesBase.com – Fire Extinguisher Ratings – Find Out About Fire Classifications and Fire Extinguisher Ratings

University of Florida, Campus Scenes (1950s) part 2

Comments are closed