What is the OSHA standard for interlocking machine guards?

OSHA does not have a standalone standard specifically for interlocking machine guards, but interlocking requirements fall under the general machine guarding standard:

29 CFR 1910.212 – General Requirements for Machine Guarding

Machines must be equipped with guards to protect operators and employees from hazards.

Interlocking guards can be used to ensure that machines stop operating when the guard is opened or removed.

Related Standards:

1. 29 CFR 1910.147 – Lockout/Tagout (LOTO):
   • Ensures machines cannot restart unexpectedly during servicing or maintenance, where interlocks may play a role.
2. 29 CFR 1910.217 – Mechanical Power Presses:
   • Requires interlocked barriers or devices to prevent operation when safeguards are not in place.

OSHA’s Key Points for Interlocks:

• Interlocks must be reliable and tamper-resistant.
• Machines must not restart until the guard is securely in place.

Employers are responsible for ensuring interlocking guards are used effectively to comply with OSHA’s machine guarding regulations and protect workers.