Work on electrical equipment
What is being checked
The inspector is checking whether the permit, risk assessment, isolations, competence and supervision create an effective control system for work on electrical equipment and systems, and whether recent work followed that system.
Ready onboard
0/6 completePractice questions
Answer aloud, then open the preparation point.
1What makes this work on electrical equipment and systems safe to start?
Confirm the approved permit, competent team and physical controls for supply identification, disconnection, lockout, test for dead, stored energy, earthing, adjacent live parts, arc hazard and competent persons.
2Who can stop or suspend the permit?
Anyone may stop unsafe work. The authorising officer must suspend it if conditions, scope, personnel or simultaneous operations change.
3How are isolations proved?
Identify every energy source, isolate, lock and tag, dissipate stored energy and prove the safe state at the worksite.
4What change requires reassessment?
A change in scope, atmosphere, weather, equipment status, personnel, nearby operations or validity period requires suspension and review.
5Show that the last job was properly restored.
Trace permit closure to removal of tools and personnel, guard replacement, isolation removal, testing and operational handover.
Where an observation may arise
The risk assessment did not address supply identification, disconnection, lockout, test for dead, stored energy, earthing, adjacent live parts, arc hazard and competent persons.
Physical inspection did not confirm the correct circuit is isolated, approved test instruments prove dead and re-energisation is controlled.
An energy source, stored pressure, gravity, temperature or automatic start was not isolated and proved safe.
The permit was expired, pre-signed, issued away from the worksite or inconsistent with the actual job.
A conflicting operation or permit was not identified and controlled.
The job was closed despite live conductor exposure, wrong isolation, stored charge, missing covers or uncontrolled re-energisation.
Master's practical note
Audit one completed permit backwards from equipment restoration to initial isolation. Most weaknesses appear at scope change, shift handover or return to service rather than on the front page.
Equipment boundary and references
Equipment boundary: The permit is an administrative control and does not replace physical isolation, competent supervision or continuous reassessment at the worksite.
References
- OCIMF SIRE 2.0 Question Library Part 1, Version 1.0, Question 5.5.5
- SOLAS Chapter II-1
- IEC 60092 series
Last reviewed: 2026-09-13