Jump to content
Mechanical Engineering

Workshop Processing and Materials

Recommended Posts

  • 5 months later...

Classes of fire

There are six different types of fire classes and here is a detailed list covering types of fire included in each class:

Class A – fires caused by combustible materials including paper, fabric, wood and other flammable solids.

Class B – fires caused by flammable liquids such as paint, turpentine or petrol among others.

Class C – fires caused by flammable gases including methane, butane or hydrogen among others.

Class D – fires caused by combustible metals including potassium, aluminium or magnesium among others.

Class F – fires include those caused by cooking oils such as a chip-pan fire.

Electrical Fires – fires involving electrical equipment but upon removal of the electrical item, the fire class is changed.

Fire Extinguisher Types and Colour Codes

The six main fire extinguisher types are water, foam, CO2, powder, water mist and wet chemical. Each of the different types of fire extinguisher is suitable for different fire classes. It is important that you purchase the right fire extinguisher for your needs:

Water - Class A fires (solid combustibles such as wood, paper and textiles). Some water extinguishers are safe on electrical equipment if di-electrically tested. Otherwise caution is required near electrical equipment, as ordinary water is a conductor.

AFFF foam - Class A and B (flammable liquids). Safe on electrical equipment if di-electrically tested.

Carbon dioxide (CO2) - Class B and electrical equipment

ABC powder - Class A, B, C (flammable gases) and electrical equipment

De-Ionised Water mist - Class A, B, C and electrical equipment

Wet chemical - Class F (deep fat) fires, sometimes class A

For more information visit - https://fire-risk-assessment-network.com/blog/types-fire-extinguisher/

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Join Mechanical Engineering network

    Join us (login) to get full access : Please sign up to connect and participate.

    To download files...please login

  • Create New...