Fig. 3 shows a workshop where a student is using a belt sander to smooth a piece of wood. The timber has been selected for its working properties and appear...
Question 1 Report
Fig. 3 shows a workshop where a student is using a belt sander to smooth a piece of wood. The timber has been selected for its working properties and appearance. Different types of timber have different characteristics that affect their suitability. The grain direction and moisture content affect how the timber can be worked.
It is safe to use. It stays cool in the heat. It is held in place.
A key advantage of using nylon here is its natural durability.
(a) Name two items of PPE the student should wear when using the belt sander. [2]
(b) Explain why a dust extraction unit is used near the belt sander. [2]
Answer Details
(a) When using a belt sander, the student should wear two of the following items of personal protective equipment:
- Dust mask or respirator [1] - The belt sander generates fine wood particles that become airborne. Inhaling these particles can damage the lungs and cause respiratory conditions, so a dust mask filters them out before they are breathed in.
- Safety goggles or eye protection [1] - Fine dust and small wood chips thrown up by the rapidly moving sanding belt could enter the eyes and cause irritation or injury. Goggles create a sealed barrier around the eyes.
Ear defenders or hearing protection are also acceptable, since belt sanders produce significant noise that can damage hearing over time.
(b) The belt sander produces fine wood dust as it abrades the surface of the timber [1]. This dust is harmful if inhaled, potentially causing respiratory problems such as asthma or, with prolonged exposure, more serious lung conditions. The dust extraction unit draws the airborne particles away from the working area through suction, protecting the health of the user and keeping the workspace clean and safe for others nearby [1].
Download The App On Google Playstore
Everything you need to excel in your exams
