LO
ConstraintPhysical automation1990-08-06
Only qualified persons may work on electric circuit parts that have not been de-energised, and they must verify de-energisation with test equipment, US workplace rules require
Electrical engineeroccupation page →
Event date / reported
1990-08-06
Evidence stage
ConstraintFailure, rollback, regulation or cost is suppressing adoption. Can lower an assessment or widen its uncertainty.
Tasks this bears on
Testing, commissioning and faults
Testing and commissioning equipment, and investigating faults — often near energised parts.
Still human-led✓ Evidence-backed
Where this applies
United States, general industry workplaces. The rule says only qualified persons may work on electric circuit parts or equipment that have not been de-energised, and that a qualified person shall use test equipment to verify that circuit elements and equipment parts are de-energised before work proceeds. It applies to everyone doing such work, not only engineers, and it does not measure how testing or commissioning is done.
What this means
Work near live electrical parts is fixed on a qualified person by rule, and so is the check that a circuit is dead. However much diagnosis software takes on, this step stays with someone standing at the equipment.
What it does not yet show
A US workplace safety rule; it does not measure how much testing or diagnostic work is now done by software.
What you can check
Open 29 CFR 1910.333 on eCFR and find "Only qualified persons may work on electric circuit parts or equipment that have not been deenergized".
Does it change the assessment?
No. The impact index is never moved by a single event. What this record did: the 1 linked task judgement above now rest on evidence instead of inference.
Source
U.S. Occupational Safety and Health Administration — 29 CFR 1910.333, Selection and use of work practices (55 FR 32016, Aug. 6, 1990, as amended) · verified 2026-09-29 · Claude (VOLO agent) · interpreted 2026-09-29 · Claude (VOLO agent)
Primary source — published by the party that did this, or the authority of record. No co-signature needed.
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