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GullySystem
A practical guide

Build or buy software for a food processing machinery plant

Ganesh HSStrategy and Technology, GullySystem
Practical advice · 4 min read

In this guide 6 sections
The short answer

Buy a ready product for stock, purchasing, invoicing and service tickets, since every machine builder does that work the same way and a vendor has already solved it. Build custom for the records that set you apart: hygienic design files, material certificates traced to each stainless weld, and commissioning packs. Keep the custom part small.

Split the work into what is common and what is yours

List every task the plant does on paper or in a workbook, and next to each one mark whether any machine builder would do it the same way. Stock, purchasing and invoices land there. So do spare part sales.

Then mark the tasks that come from your product: CIP spray coverage on a dairy tank, changeover settings on a filling line, belt grade on a conveyor. Nobody else keeps these records.

The first list suits a ready product. Custom work pays on the second.

  • Common: stock, purchase, sales, service tickets
  • Yours: hygienic design review records
  • Yours: material certificate tracing
  • Yours: commissioning and acceptance packs
  • Common: spare part quotes and orders

Test hygienic design records against a ready product

Hygienic design depends on details such as weld finish, drainability, corner radii, gasket material and the surface roughness of food contact parts. Auditors ask to see them.

Ask a vendor to show where the surface finish value for one weld is stored and how a design review gets signed. Otherwise a workbook grows beside it.

A separate workbook is not a failure. It marks where the fit stops.

Trace material certificates to the part and the weld

Food contact parts in stainless steel need certificates, and each heat number should link to the cut part, the assembly and the machine serial.

Check whether a ready product can hold a certificate against a heat number, show every part cut from that heat, and flag a part with no certificate before dispatch.

A certificate missing at handover costs weeks. Custom wins on this one.

Compare commissioning and handover documents

At commissioning you hand over drawings, manuals, test reports, certificates, cleaning procedures and a signed acceptance form, and customers expect all of it organised by machine serial.

A ready product may give you a document folder, while a custom build can assemble the pack from records already stored and show the gaps before the engineer travels.

Weigh this against upkeep. Custom software needs someone to maintain it for years, and you must settle who owns the source code and the data, and who fixes faults after launch.

  • Who owns the source and the data
  • Who fixes faults after launch
  • How changes in your product are added
  • What happens if the supplier leaves

Choose a path and run a small pilot

For most plants the answer is a ready product for the common work and a small custom layer for certificates and handover packs, with clear fields and owners.

Pick one machine in build and run its certificates and commissioning pack through the chosen setup, noting every moment staff reached for a workbook.

Those gaps are your specification. Write them down first.

Build or buy scoring sheet

Every task, such as stock, purchasing, hygienic design review, certificate tracing and commissioning pack, gets its own line on a single printed page. Columns hold who does it, how often, whether a ready product covers it, what a custom build would add, and a final choice of buy, build or workbook.

Open a blank worksheet to print

Questions owners ask

Is custom software always more expensive?

Not always, but custom software carries upkeep for years, so compare what you pay to maintain it against the licence fees and the workarounds a ready product forces.

Can we start with a ready product and add custom parts later?

Yes, provided the product offers an interface or exports its data in a usable format, so ask about both early, because closed products make later additions slow and costly.

Who should be in the decision?

Include the quality head, the project manager who runs commissioning, the purchasing lead and the director, since each of them holds records that the system must cover.

What if our customers demand their own formats?

A custom layer can produce the pack in each customer’s format from the same stored records, which a fixed product often cannot.

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