electrical, radiation, and laser safety UPDATED ACTUAL Exam Questions and CORRECT Answers

electrical, radiation, and laser safety
UPDATED ACTUAL Exam Questions and
CORRECT Answers
electrical safety - CORRECT ANSWER - Electricity has long been recognized as a serious
workplace hazard.
• Injuries can occur from electrical arc flash and arc blast.
• Electrical energy is everywhere and, too often, we take this for granted.
• Only a tiny amount is needed to cause an electrocution.
• Each facility has a safety plan to promote electrical safety.


electrical shock - CORRECT ANSWER - - Direct contact with electricity.
- The human body is a good conductor
of electricity.
- Exposure can feel subtle, like a mild tingle.
- Effects can range from a mild tingle to immediate cardiac arrest.


electrical arc flash - CORRECT ANSWER - - The light and heat produced as part of an arc
fault.
- A type of electrical explosion or discharge that results from a connection through air to ground.
- Can be seen and can cause serious burns.
- Can occur from a low and high voltage source.
- Can cause thermal injuries (i.e. burns).


electrical arc blast - CORRECT ANSWER - - An explosive burst of energy that may occur
during an arc flash.
- Occurs as the result of a malfunction in the insulation between two energized phase conductors.
- Rather than flowing through a conductor, the current flows through the air, which releases
thermal energy into the immediate environment.