Final answer:
The assertion that abrasive wheels of 2 inches or smaller in diameter do not need safety guards is incorrect. OSHA standards require safety guards for all abrasive wheels, regardless of size, to protect operators from injury.
Step-by-step explanation:
The statement that abrasive wheels on mounted wheels used in portable operations, 2 inches and smaller in diameter, do not require safety guards is false. According to the Occupational Safety and Health Administration (OSHA) standards, especially when dealing with abrasive wheels, safety guards are a critical aspect of the safety measures to be followed, irrespective of the size of the wheels. Even when the abrasive wheels are small, they can still pose significant risks, such as flying fragments and sparks, which can cause injury.
It's essential for operators to adhere to the rules and use appropriate safety guards to prevent potential accidents and ensure a safe working environment. OSHA provides specific guidelines that must be followed to protect workers from the dangers posed by abrasive wheel equipment.