Q&A - How often should emergency stop (E-stop) functions on fixed machinery be tested?

May 6, 2026 Please note the publication date on each article, as legislation and guidance can change over time and older content may no longer reflect the latest requirements.

Question

How often should emergency stop (E-stop) functions on fixed machinery be tested?

Answer

Emergency stop functions must be included in a risk-based inspection and testing routine to ensure they operate correctly when required.

Functional Testing

  • Checked before use or start of shift where risk is higher
  • Tested to confirm they immediately stop all dangerous movement
  • Verified across all control points (including remote panels where fitted)
  • Included in planned preventative maintenance (PPM) schedules

Routine Testing Practice

Typical industry expectations include:

  • Daily or pre-use checks for high-risk or frequently used machinery
  • Weekly or periodic functional tests in lower-risk environments
  • Testing after maintenance, repair, or modification
  • Recording tests where part of a formal safety system

Testing must confirm that the E-stop:

  • Works instantly
  • Stops the correct hazardous functions

Cannot be bypassed or isolated without authorisation