Both machine safeguarding and lockout-tagout (LOTO) protect employees from becoming caught in or struck by machines. The trick is to know when machine safeguarding doesn’t offer enough protection and lockout-tagout is necessary.
OSHA’s machine guarding standard states at 1910.212(a)(1): “Types of guarding. One or more methods of machine guarding shall be provided to protect the operator and other employees in the machine area from hazards such as those created by point of operation, ingoing nip points, rotating parts, flying chips, and sparks.”