Asphalt Plant Commissioning Checklist, Day by Day

Commissioning is where an assembled plant becomes a producing plant. Our engineers run it with your crew, so training happens on the plant you will operate. Below is a typical day-by-day sequence for a mid-size batch plant — actual days depend on plant size, crew experience and whether materials are ready.

Before commissioning: what must be ready

Item	Why
Mechanical installation complete	All units placed, bolted, ducts and lines connected
Power	Grid or generator at the right voltage and frequency
Fuel	Enough for trials and the first production days
Bitumen	In the tank at pumping temperature
Aggregate	Every size in its bay and bin
Test weights	For scale calibration
Trucks	To take trial mixes away
Lab and technician	To test trial mixes
Crew	Operators, maintenance mechanic and electrician present every day

A typical commissioning sequence

Day	Work	Training focus
1	Pre-start checks: mechanical, electrical, lubrication, safety devices; motor rotation	Plant layout, safety rules, lock-out/tag-out
2	No-load runs of every unit; interlocks; emergency stops; control system I/O checks	Control screens, start-up and shutdown sequence
3	Scale calibration (aggregate, filler, bitumen); cold feeder calibration	Calibration method and records
4	Burner set-up: ignition, flame, air-fuel ratio; drum heating with aggregate	Burner control, temperature management
5	Trial batches: temperatures, mixing times, discharge; adjust recipes	Recipe entry, batch monitoring, alarms
6	Trial production with your lab: gradation, binder content, temperatures	Quality checks, adjustments
7	Production under supervision; punch list; handover	Daily checks, lubrication, wear parts, plant log

Containerized and mobile plants often move faster through days 1–2 because units arrive pre-wired and tested.

Training by role

Role	What they learn
Plant operator	Start-up and shutdown; recipes; burner and temperature control; alarms; batch records
Maintenance mechanic	Daily to monthly checks; lubrication; belt, chain, liner and paddle replacement; baghouse care
Electrician	Cabinets, motors, sensors, interlocks; fault finding with the control system
Plant manager	Production planning; fuel and output records; spare parts stock; safety

Handover documents

Operating and maintenance manuals
Electrical drawings and parts lists
Calibration records for scales and feeders
Burner settings record
Lubrication chart and maintenance schedule
Punch list, signed when closed

Common delays — and how to avoid them

Delay	Prevention
No fuel or bitumen at temperature	Deliver and heat before engineers arrive
Missing aggregate sizes	Fill every bay and bin
No trucks for trials	Book them for trial days
Crew changes every day	Same trainees throughout
Power problems	Test the generator or grid supply with load beforehand

Our service page explains how engineers’ days are agreed in the contract. For the steps before commissioning, see installation time. Plan commissioning with us.

Frequently asked questions

How long does asphalt plant commissioning take?

For a mid-size plant with a ready site and materials, commissioning and trial production typically take several days after mechanical installation. Larger plants, first-time crews or material delays add time.

What must the buyer prepare for commissioning?

Power or generators, fuel, bitumen at temperature, aggregate in every bin size, trucks, a lab technician with test equipment, test weights for scale calibration, and the operators and maintenance staff who will be trained.

What does operator training include?

Start-up and shutdown sequences, recipe entry, burner and temperature control, alarms and safe responses, daily checks, lubrication and wear part replacement, and record keeping.

When is the plant handed over?

When trial mixes meet the agreed temperature and, with your lab, the mix requirements; when the punch list is closed; and when manuals, drawings and records are handed over. The contract defines the acceptance criteria.

Plants mentioned in this guide