Short answer. Most switching errors come from a step done out of order, or on the wrong device or lineup, without validation. Written switching orders, a fixed step sequence, a second-person check at critical steps and a record of each step help reduce them.
Definition. A switching order is a written list of switching operations, in the exact order they must be done, with the expected state of each device after each step.
Types of switching errors
- Wrong order. The right steps, in the wrong sequence.
- Wrong device. The right action on the wrong breaker or switch.
- Missed step. A step skipped under time pressure.
- Wrong state assumed. A device thought to be open or closed when it is not.
Writing a clear switching order
- One action per step.
- Device names exactly as labeled in the field.
- The expected state after each step.
- Hold points before steps with the highest consequence.
Controls in the field
- Read back. The operator reads the step and device name aloud before acting.
- Second-person check at critical steps.
- Hold points where work stops until a named person signs off.
- Stop-work rule. If anything does not match the order, stop and ask.
Records for commissioning
Keep each step’s time, who did it, the device state found and left, readings, photos and sign-offs, with the switching order version used.
Where ICARUS Ops fits
The ICARUS Ops Error Elimination System (EES) runs switching orders in a locked sequence: one step at a time, steps that cannot be reordered, photo proof and QA sign-off gates at hold points, with a time-stamped record of each step.
See a sample ICARUS Ops EES procedure
See a sample ICARUS Ops EES procedure
Demos are for teams actively evaluating software for deployment.
Frequently asked questions
What causes most switching errors?
Steps done out of order, actions on the wrong device, missed steps and wrong assumptions about a device’s state.
What makes a switching order clear?
One action per step, device names exactly as labeled, and the expected state after each step.
Should every switching step have a second-person check?
Not always. Many teams use a second-person check at the critical steps the procedure marks, so the check stays meaningful.