What class of fire extinguisher only contains water and is used for ordinary combustibles like paper and wood? What is the main reason for acute back injuries?

Understand the Problem

The questions in the image relate to fire safety and ergonomic practices. The first question addresses the type of fire extinguisher suitable for certain combustibles, while the second question focuses on the main causes of acute back injuries.

More Information

Class A fire extinguishers are typically water-based and are designed to tackle fires involving ordinary combustibles. Acute back injuries often occur due to improper lifting techniques such as reaching, twisting, or bending.

Tips

Ensure to use proper lifting techniques and choose the correct extinguisher for the fire type.

Sources

• Classes of Fires & Fire Extinguishers - Safety - UCLA Health - uclahealth.org