Ontario Operator-in-Training (OIT) Practice Exam

What specific safety measure should be taken when working on electrical equipment?

1. Wear insulated gloves only

2. Use safe working distance

3. Lock out control devices and attach lock out tags

4. Always work with a partner

The correct answer is: Lock out control devices and attach lock out tags

Taking the specific safety measure of locking out control devices and attaching lock out tags is essential when working on electrical equipment to ensure that the power source is completely disconnected and cannot be accidentally re-energized. This practice is part of an established safety protocol known as lockout/tagout (LOTO), which is designed to prevent the unexpected start-up of machines and the release of hazardous energy during maintenance and servicing activities. Locking out devices physically prevents anyone from turning on the equipment while it is being serviced, and the tags serve as a visual reminder to all personnel that the equipment must not be energized. This reduces the risk of severe injuries or fatal accidents that can occur due to electrical shock or equipment movement while a worker is exposed to the machinery. In contrast, simply wearing insulated gloves may not provide comprehensive protection against all electrical hazards if other safety procedures, like locking out tools, are not followed. Additionally, relying on a safe working distance or working with a partner does not offer the same level of protection as an enforced lockout/tagout procedure, which directly addresses the control of hazardous energy.