Final answer:
Survival and emergency equipment should be overhauled at the intervals recommended by the manufacturer to ensure reliability and effectiveness during emergencies.
Step-by-step explanation:
The question 'Survival and emergency equipment shall be overhauled at what intervals?' pertains to the maintenance and inspection schedules for emergency equipment. The correct answer to this is a) At the intervals recommended by the manufacturer. This is because manufacturers are the ones who best understand their products and provide specific guidelines on how often the equipment should be serviced to ensure it functions properly and safely when needed.
Regular maintenance is crucial for the reliability and effectiveness of survival and emergency equipment. Therefore, it's essential to follow the manufacturer's recommendations, which may vary depending on the type of equipment and its intended use. Ignoring these guidelines could result in equipment failure during critical situations, which could have severe consequences.
Learn more about Emergency Equipment Maintenance