Electrical System Commissioning SOP
An electrical system commissioning SOP for Scanel: pre-energization inspection and testing, a hard energization-approval gate, functional testing with a fault-resolution loop, a commissioning report and signed customer handover.
What the electrical system commissioning SOP process is
Scanel's Marine Electrical Installation SOP ends when the physical work is done: cables run, terminations made, panels fitted. This chart starts exactly where that one stops, because a completed installation is not the same claim as a working one, and the gap between the two is where equipment gets damaged and people get hurt. The chart runs "Visual inspection of completed installation" and "Continuity and insulation resistance testing" before anything is powered up, and the "Continuity and insulation test results pass?" decision is the first real checkpoint: a fail routes straight to "Correct wiring fault and retest" and back through testing again, not into an energization request written around a result nobody actually trusts.
The chart's center of gravity is "Energization approved by responsible engineer?", and it is drawn as a hard gate for a specific reason: energizing a system that has not cleared insulation and continuity testing, or that has not been formally signed off, can destroy the equipment it feeds or injure whoever is standing nearest the panel when it goes live. "Submit test results and request energization approval" has to reach a named engineer before "Energize system under controlled conditions" happens, and anything short of a clean approval routes to "Hold energization, resolve outstanding issue" and back through the request again, however much that costs the schedule. Functional testing gets the same treatment on the other side of energization: the "Faults found during functional testing?" decision sends a fault into "Diagnose and resolve fault" and back through functional testing again, rather than into a commissioning report written around a problem nobody fixed.
Every row also carries a named owner and an hours figure through the built-in People and Workload columns. Jonas Whitmore's field hours run the width of the chart, from insulation testing through energizing the system to diagnosing a fault found in functional testing, while Camille Ward's single half-hour on the energization-approval gate stands out precisely because there is only one of it: that gate is meant to be a short, named, non-negotiable checkpoint, not a line item that grows to look like the rest of the work. Use this SOP for a specific installation that is ready to prove out and hand over; use Scanel's standalone Electrical Inspection & Testing SOP when a customer wants switchboards, breakers or detection systems tested with no installation job attached, and its Emergency Marine Electrical Repair SOP when the fault is on a system already in service, not one being brought into service for the first time.
What this flowchart covers
In this template
- Pre-energization inspection and testing, from "Installation complete, ready for commissioning" through "Visual inspection of completed installation" and "Continuity and insulation resistance testing" to the "Continuity and insulation test results pass?" decision, which routes a fail to "Correct wiring fault and retest" before a request for energization is ever submitted
- The energization gate itself: "Submit test results and request energization approval" feeding the "Energization approved by responsible engineer?" decision, which branches to "Hold energization, resolve outstanding issue" on anything short of a clean approval, with no exception for schedule pressure
- Controlled energization and functional proof: "Energize system under controlled conditions" and "Functional testing of energized system", the two rows carried by Field Electrical once the engineering sign-off is in hand
- The functional-test fault loop: the "Faults found during functional testing?" decision routes a fault straight into "Diagnose and resolve fault" and back through functional testing again, rather than into a commissioning report written around an unresolved issue
- Reporting and handover: "Compile commissioning report" and "Hold handover meeting with customer" close out the job with a signed record the customer keeps, ending at "Commissioned system handed over to customer"
- Named owners and hours on every row via the People and Workload columns, so the workload BI panel can show Jonas Whitmore's field hours clustering across testing, energizing and fault diagnosis, while Camille Ward's single hour on the energization-approval gate stands out precisely because there's only one of it
When to use this template
- You've just finished a marine or offshore electrical installation and need a fixed sequence for proving it works before the vessel or platform is handed back into service, rather than an informal walk-through before power goes on
- You need a documented, named sign-off before anyone energizes a system for the first time, instead of a technician making an informal call that the wiring "looks fine"
- A functional test turned up a fault after energization and you want a record of what was found, who fixed it, and that it was re-tested rather than accepted as-is
- You're onboarding a new commissioning engineer or field technician and need a reference for exactly which checks happen before energization and which happen after
- You're scoping the job against Scanel's other SOPs and need to confirm which applies: a standalone test with no installation attached is the Electrical Inspection & Testing SOP, and a fault on a system already in service is the Emergency Marine Electrical Repair SOP
How it works
Replace the lanes with your actual commissioning roles
This chart uses Field Electrical, QA / Test & Inspection, Commissioning Engineer, Engineering and Customer. If your site splits the energization sign-off from general engineering review, give it its own lane rather than folding it into a role that also does other things.
Put your own pass/fail thresholds on the test-results decision
"Continuity and insulation test results pass?" needs the actual resistance and continuity values your installed cable and equipment ratings require, not just "tested and looked fine". Write the accepted values directly into the row's comment field so the person reading the meter isn't relying on memory.
Name who has the authority to approve energization
The energization decision is the one branch in this chart with real safety and equipment consequences if it's skipped. Attach a named engineer, not just a title, to "Energization approved by responsible engineer?" so there's no ambiguity about who can send a system live and who has to send it back to "Hold energization, resolve outstanding issue" instead.
Set People and Workload on every row before you rely on the BI panel
The workload panel can only total hours for rows that carry them. Fill in People and Workload for each step as you adapt the chart, using realistic effort hours rather than elapsed time, so a week with two commissioning jobs actually shows up as a busy week for the right person.
Decide what counts as a functional-test fault
"Faults found during functional testing?" is only useful if the technician and the commissioning engineer agree in advance on what triggers the Yes branch, a tripped breaker, a motor running backwards, a reading out of range. List examples directly in "Diagnose and resolve fault" so the checklist isn't interpreted differently by whoever happens to be on duty.
Frequently asked questions
What triggers the start of the commissioning process?
The process starts at "Installation complete, ready for commissioning": the physical installation work, covered by Scanel's separate Marine Electrical Installation SOP, is finished and the system is ready to be proven out. Commissioning does not begin on a general sense that the work looks done, only on this specific handoff.
What happens if continuity or insulation testing fails?
The "Continuity and insulation test results pass?" decision routes a fail to "Correct wiring fault and retest", which loops back through testing again. There is no energization request built on a test result nobody trusts: the loop repeats until the readings actually clear.
Who has the authority to approve energization?
In this chart the energization gate sits with a named responsible engineer, not with whoever happens to be on site that day. Energizing a system that hasn't cleared testing or hasn't been formally signed off can destroy the equipment it feeds or injure someone standing near the panel, so "Energization approved by responsible engineer?" is a hard stop, not a formality, and anything short of a clean approval routes to "Hold energization, resolve outstanding issue" instead of going live.
Why does a functional-test fault loop back instead of going straight to the commissioning report?
"Faults found during functional testing?" routes a Yes to "Diagnose and resolve fault" and back through functional testing again, the same pattern as the earlier test-results decision. A commissioning report is meant to document a system that works, not one that mostly works with a known issue carried forward, so a fault gets fixed and re-tested before the report is written.
How is this different from Scanel's Electrical Inspection & Testing SOP?
The inspection SOP is a standalone service: a customer can call just to have switchboards, breakers or detection systems tested and reported on, with no other work attached, and any corrective action it turns up routes into whichever SOP actually fixes the problem. This SOP assumes a specific installation already exists and is ready to be brought into service, and it owns the energization step end to end rather than handing energization off elsewhere.
Where this process fits
In most operations this process follows Electrical Inspection & Testing SOP.
It is one step in Marine electrical.
Step 3: Electrical Inspection & Testing SOP
An electrical inspection and testing SOP for Scanel: identifying the installation, defining which tests actually apply, safety preparation, performing the tests, assessing results, and issuing an archived report, with no other job attached.
Step 4: Electrical System Commissioning SOP You are here
An electrical system commissioning SOP for Scanel: pre-energization inspection and testing, a hard energization-approval gate, functional testing with a fault-resolution loop, a commissioning report and signed customer handover.