Infrared Imaging: Evaluating Electrical Equipment

Part 1: Infrared Imaging: Viewing Modes Expand

Part 2: Thermal Imagers Play Role in Preventive Maintenance Programs

Part 3: Safe Infrared Scanning Starts with Personal Protective Equipment

Part 4: Infrared Imaging: Temperature Differentials Tell the Story

Part 5: Infrared Imaging: Beyond Electrical Systems

Safe Infrared Scanning Starts with Personal Protective Equipment

By Michael Newbury - March 2010

Front-line technicians can safely scan electrical equipment with a thermal imager in two ways: by leaving the panel closed and scanning through a specialized infrared window or by opening the electrical panel while wearing all of the required personal protective equipment (PPE).

Depending on the arc-flash rating of the equipment, PPE could include but is not limited to protective clothing, gloves, and a face shield. Most arc-flash events happen because of a change in state of the equipment, such as opening a piece of equipment to scan it.

By installing infrared windows, technicians can scan electrical equipment more frequently and safely, as well as without being forced to change the state of the equipment.

Whichever way managers choose, the maintenance staff must understand and adhere to requirements of National Fire Protection Association 70E, Electrical Safety in the Workplace.