Most project problems are born in the first few weeks, when assumptions are made and never written down. A short but disciplined pre-design phase costs a small fraction of the project and prevents many of the expensive changes that show up during installation. This checklist reflects the questions we ask when a manufacturer asks for help with a new line or an upgrade.
1. Define what the plant must do
Start with production targets: products, volumes per hour and per year, batch sizes and how many changeovers per week. State the growth you expect in three to five years, even if the first installation will be smaller. Many plants are built for today and choke on tomorrow’s demand.
2. Describe the product and the process
List ingredients and their properties: viscosity, temperature limits, solids, abrasiveness, shear sensitivity and hazards. Describe each process step, its duration and the critical parameters such as temperature or particle size. If some data is missing, plan a trial. Equipment recommended without knowing the product is guesswork.
3. Capture the site conditions
Walk the site with a tape measure and a camera. Record available floor area, ceiling height, door and lift sizes for moving equipment, floor drainage and load capacity. Note existing utilities such as steam, chilled water, compressed air and electrical capacity, and how much spare capacity remains. A heat load calculation at this stage shows whether cooling and heating systems will be adequate.
4. Set the hygiene and regulatory requirements
- Which regulations apply: food, pharmaceutical, cosmetic or chemical?
- What surface finish and materials of construction are required?
- Will cleaning be manual, clean-in-place or both, and how is it validated?
- What documentation is expected: material certificates, weld records, calibration?
- Are there hazardous areas or allergen controls that affect layout?
5. Sketch the flow
A simple process flow diagram shows how ingredients enter, how they move between vessels and how finished product leaves. Then create a first layout that respects the flow of people and materials, leaves room for maintenance and separates clean from dirty areas. Pre-design drawings do not need to be final, but they allow everyone to see the same picture and to challenge it.
6. Compare technologies, not only quotations
It is tempting to ask several suppliers for a price on the same item and select the lowest. A better approach is to compare life-cycle cost: energy consumption, cleaning time, maintenance, spare parts and yield. Two mixers with the same price can differ by a large margin in batch time, and that difference will matter every day for years.
7. Plan installation and start-up
Installation is often coordinated by a separate contractor, and a plan that shows sequence, lift-in routes, shutdown windows and utility tie-ins prevents surprises. Decide who is responsible for commissioning, operator training and documentation handover. A site acceptance test with agreed criteria protects both the customer and the supplier.
8. Think about service from the first day
Ask about spare parts recommendations, lead times and local support. A critical wear part that takes twelve weeks to arrive is a risk that can be reduced by stocking it at the start. Service agreements and training for operators and maintenance staff are usually easy to arrange at purchase and hard to arrange later.
Bringing it together
Written down, the answers to these questions form a user requirement specification. It is the document that lets suppliers offer comparable solutions and lets the plant team check that what arrives is what was intended. It also creates a shared language between operations, engineering, quality and purchasing.
Common pitfalls to avoid
Three mistakes appear again and again. The first is to fix the equipment list before the process is understood. The second is to leave utilities until late, only to find that steam or chilled water capacity is short. The third is to skip operators and maintenance staff in the review; they know which valve is hard to reach and which platform is never used. A one-hour walk through the draft layout with those people often saves weeks of changes later.
NCK Engineering provides on-site consultation and pre-design drawings that follow this approach, and our equipment partners can join the discussion when you are ready. Read more about our pre-design services or ask for a consultation.