Commissioning is where a newly built unit stops being a construction project and becomes operating equipment. We plan it early, run it on site, and stay through the first stable operation, on new industrial equipment, demonstrators, and first-of-a-kind pilot plants.
Commissioning and start-up of new low-carbon equipment, IonectCommissioning is the structured process of taking a newly built plant or piece of equipment from mechanical completion to safe, stable, proven operation. It runs in stages: pre-commissioning (cleaning, flushing, leak and pressure testing, instrument calibration and loop checks), commissioning (energizing systems and testing control loops and interlocks dynamically), start-up (the first controlled introduction of power, fluids and feedstock), and performance testing against the design intent. For first-of-a-kind low-carbon units, it is also the first time the real plant, not the model, tells you how it actually behaves.
Every engagement is shaped to the equipment and the stage it is at, but the work typically includes:
Breaking the plant into commissioning systems and sequences, with a realistic schedule, defined early, before construction is finished, so commissioning is not the part that gets compressed.
Cleaning, flushing, drying, leak and pressure testing, line walks and the punch-list discipline that closes out mechanical completion properly.
Verifying every instrument, control loop and interlock end to end, so the control system does what the P&IDs say before anything is energized.
Writing and running the step-by-step procedures for the first controlled introduction of power, fluids and feedstock, and the ramp to stable operation.
Structured test runs that measure throughput, efficiency, consumption and emissions against the design intent and any performance guarantees.
First-fill procedures, nitrogen purging and inerting, gas detection, leak management and the simultaneous-operations planning that the first start-up of hydrogen, ammonia or syngas systems demands.
Tracking A and B punch items to closure and producing the documentation that lets operations take the unit over with confidence.
Sitting on the owner's side of the table, checking a vendor's or EPC's commissioning, protecting your schedule and holding your acceptance criteria.
We define commissioning systems, sequences and the schedule while the plant is still being designed and built, so start-up is planned, not improvised under pressure.
On site for cleaning, flushing, leak testing, loop checks and calibration, closing out mechanical completion against a real punch list.
First power, first fluids, first feed, then the controlled ramp to stable operation and the performance runs that prove the unit does what it was designed to do.
Documentation, training support and troubleshooting through the unstable first weeks, so operations inherit a unit that runs, with the start-up data captured for the next iteration.
We have commissioned and started up electrolyzers and low-carbon process units ourselves, including first-of-a-kind. Not procedures written from a desk.
Most projects under-plan commissioning and pay for it at start-up. We bring the planning forward, to where it is still cheap to fix.
The engineers running your start-up are the ones you talk to, on the ground, through the night shifts that first start-ups always involve.
Commissioning is the handover point, where a construction project has to become a plant that earns its keep, or stalls just short of it.
Alkaline, PEM, AEM and SOEC, stack and balance-of-plant start-up, first hydrogen, and operational troubleshooting.
CO₂ utilisation, e-fuels and waste-conversion reactors and downstream units, first feed-in and ramp to stable operation.
First start-up of transportable, first-of-a-kind units, often inside tight site windows.
Water, gas, power, cooling and control systems, the parts that quietly decide whether the main unit starts at all.
Commissioning is the whole process of bringing a new plant from mechanical completion to proven operation. Start-up is one stage inside it: the first controlled introduction of power, fluids and feedstock, and the ramp to stable running. Commissioning also covers everything that has to happen before you dare start up (pre-commissioning, loop checks, calibration and safety checks) and the performance testing that comes after.
Pre-commissioning is the cold work done before any process fluids are introduced: cleaning, flushing, drying, leak and pressure testing, instrument calibration and loop checks. Commissioning then energizes the systems and tests them dynamically, control loops, interlocks and equipment running, leading up to start-up. In short, pre-commissioning proves the plant is built right, commissioning proves it works.
Yes. A large part of our commissioning work is independent or owner's-side: a vendor or EPC built the unit, and you want experienced engineers checking the commissioning, protecting your schedule and holding the acceptance criteria. We have no commercial ties to equipment vendors, so our only interest is your plant starting properly.
Carefully, and with more planning, not less. For a first-of-a-kind low-carbon unit there is no proven start-up sequence to copy, vendor procedures are often immature, and novel interactions (for example, intermittent renewable power feeding an electrolyzer and a downstream synthesis loop) only reveal themselves dynamically. We plan the commissioning around those unknowns, build in the instrumentation and test steps to expose them safely, and treat the first runs as structured experiments rather than just an on switch.
First start-up is the highest-risk moment in a plant's life, and hydrogen, ammonia and syngas make it less forgiving: flammability, toxicity and high pressure leave little margin. We work through first-fill procedures, nitrogen purging and inerting, leak testing, gas detection and simultaneous-operations planning, and we sequence the start-up so each system is proven before the next one is introduced. The procedures are written for the plant in front of us, not copied from a generic template.
Far earlier than most projects start it. The cheapest time to fix a commissioning problem is on paper, while the plant is still being designed and built. Leaving commissioning planning until construction is nearly finished is the single most common reason start-ups slip and budgets overrun. We prefer to be involved during design or construction, so the plant is built to be commissioned, not just built.
