Ergonomics Awareness Training for Supervisors Practice Test

What ergonomic risk factor might a sailor using a rotary sander face?

1. Hand - Arm Vibration

2. Poor posture

3. Excessive noise

4. Inadequate training

The correct answer is: Hand - Arm Vibration

A sailor using a rotary sander is likely to encounter the risk factor of hand-arm vibration. This type of vibration is transmitted through the hands and arms while operating power tools, such as a rotary sander. Prolonged exposure to this vibration can lead to conditions like Hand-Arm Vibration Syndrome (HAVS). This syndrome can cause symptoms such as numbness, tingling, and reduced blood circulation, which may impair hand function and contribute to long-term health issues. Understanding this risk is crucial for providing proper training and implementing safety measures to minimize exposure, protect the sailor's health, and maintain their work efficiency. In contrast to this, poor posture often relates more to static body positions, excessive noise concerns the auditory system rather than the limbs, and inadequate training focuses on knowledge and techniques rather than a direct physical impact from tool use. Therefore, while all risk factors are important considerations in an ergonomic assessment, the specific risk associated with using a rotary sander is primarily linked to hand-arm vibration.