Page 311 - IGC BOOK

Electric and Hybrid Vehicles

Due to increase in environmental awareness, the use of
electric and hybrid vehicles is increasing. The recovery,
repair and maintenance of these vehicles are also
increasing eventually.

These vehicles are referred as a Battery Electric Vehicles
(BEV), Hybrid Electric Vehicles (HEV), and Plug-in Hybrid
Electric Vehicles (PHEV).

The range of hazards associated with BEV / HEV

Electric and Hybrid Vehicles introduce hazards into the workplace in addition to those normally
associated with the repair and maintenance of vehicles, roadside recovery, and other vehicle
related activities. These include:

• the presence of high voltage components and cabling capable of delivering a fatal electric
shock.
• the storage of electrical energy with the potential to cause explosion or fire.
• components that may retain a dangerous voltage even when a vehicle is switched off.
• electric motors or the vehicle itself that may move unexpectedly due to magnetic forces
within the motors.
• manual handling risks associated with battery replacement.
• the potential for the release of explosive gases and harmful liquids if batteries are
damaged or incorrectly modified.
• the possibility of people being unaware of vehicles moving as when electrically driven they
are silent in operation.
• the potential for the electrical systems on the vehicle to affect medical devices such as
pacemakers.

Control measures for BEV / HEV

• Battery management system – Monitor health of the battery through BMS.

• Thermal management system – to regulate the battery pack temperature, maintaining the
temperature helps for optimal performance.

• Charging infrastructure – Provision of standardised charging station, well ventilated. This
must have various charging stations, regular housekeeping.

• Over current protection – to reduce excessive flow of current which could damage battery
pack.

ENSIGN | General Workplace Issues 44