A processing line is more than a set of machines that each meet spec. This article explains how system integration works in five stages: studying the plant before anything is drawn, designing the layout and hygienic detail, building to a documented standard, installing and commissioning on site, and optimising after handover. It covers who carries the CE marking responsibility for an assembled line, the difference between factory and site acceptance tests, and five questions to put to any integrator.
By Havmek
A processing line is rarely one machine. It is a freezer, a glazer, conveyors, infeeds and packing equipment that have to run at matched speeds, fit the building, clean to the same hygiene standard and start up together. When each machine comes from a different supplier, the plant owner becomes the integrator by default, and finds out at commissioning that machines which each meet their own specification do not yet work as a line.
System integration is the discipline of owning that problem from the first day. This article sets out how it works in five stages: Study, Design, Build, Install and Optimise, what each stage should deliver, and what to ask for before you sign off. They map to the five stages Havmek works through on a project: discover, design, build, integrate and support.
Standard equipment can meet today's requirements, but fixed configurations often limit future capacity, product flexibility and line expansion. Two problems show up repeatedly. Standard machines often do not fit existing factory layouts, which forces a costly reconfiguration of the space. And standard machines are often a poor match for products with non-standard sizes and weights.
There is also a legal reason. Under the EU Machinery Directive, individual machines that interact or are arranged so that they form a self-contained unit count as an assembly of machinery. The person who builds that assembly is treated as its manufacturer, and is responsible for the EC declaration of conformity and the CE mark for the whole assembly. If the contract does not say who that is, the operator is treated as the manufacturer. Regulation (EU) 2023/1230 replaces the Directive and applies from 20 January 2027, so it is worth settling in the contract who holds this responsibility.
The first stage, which Havmek calls discovery, is about measuring rather than assuming. A useful study records the product range and its variation in size and weight, the throughput the plant achieves today and the throughput it needs, the building itself (floor space, ceiling heights, drains, utilities), the equipment already in place, and where the real constraint sits.
That last point decides everything downstream. As we cover in why most food processing plants never reach their design capacity, the slowest stage sets the ceiling for the whole line, so adding capacity anywhere else does not raise output. The deliverable from a study is a written basis of design: product range, target capacity, the identified constraint and the layout limits the design must respect.
Design turns the study into drawings, whether the job is a single custom machine or a complete processing line. Havmek's design and simulation work uses SolidWorks, ANSYS and AutoCAD. The goals are equipment that adapts to limited space, fits the process around it, and gets product to market faster.
Line-level simulation is worth asking for. One simulation vendor notes that a constraint in a food plant can shift with product mix and only appears under realistic variability, and that a model run on average times alone can point to the wrong step. That is a vendor's view, but the logic holds: a line that balances on paper at average speeds can still choke on a mixed product day.
Hygiene is designed in at this stage, not added later. EHEDG Document 8 asks for internal corners with a radius of preferably 6 mm or more (3 mm minimum) and for supports fabricated so no water or soils can remain on or within them. Transfer points between machines are where many of these details are decided, as covered in Every Transfer Point Is an Engineering Decision. The deliverable is a layout, an equipment list matched in speed, and a design review the plant signs off before any steel is cut.
Havmek machinery is built in ISO 9001 certified facilities and shipped with CE certification. The fabrication capabilities behind that include TIG, orbital and laser welding, polishing, and pickling and passivation. What those processes should achieve, and what to verify, is covered in How Food-Grade Stainless Equipment Is Fabricated, and what an ISO 9001 certificate does and does not tell you is in our ISO 9001 guide.
Visibility matters as much as capability during a build. Each operation, from frame preparation and welding to quality check and dispatch, can be mapped to a deadline at part level, with real-time tracking and a full audit trail. Ask any integrator how you would see progress and inspection records before the equipment ships.
Before shipment, ask for a factory acceptance test. It tests the equipment at the vendor's site, before it ships, covering mechanical assembly, electrical and control function, performance against specification, safety circuits and documentation.
Installation is where separate pieces become a line. Havmek provides integration and commissioning support for quick and reliable set-up of its machinery in the customer's factory. Typical installation work covers positioning, utility connections, controls and the first runs on real product.
The matching quality gate is the site acceptance test. It happens after installation at the customer's plant and checks installation correctness, utility connections, integration with plant systems and performance in the customer's own environment, against documented acceptance criteria. It follows a completed and signed factory acceptance test and is not a do-over of it. This is also the point to confirm who signs the declaration of conformity for the assembled line, as set out in section 1.
A line passing its acceptance test is the start of ramp-up, not the end of the project. Real shifts, real product mix and real wash-down cycles all test the design in ways commissioning cannot. Optimising means measuring where the constraint sits now, addressing it, and measuring again, because relieving one bottleneck moves the limit to the next stage.
Support is what makes that possible. Havmek provides 24x7 remote support and local in-person support available in under 48 hours. When you compare integrators, ask who responds, how fast, and who is accountable for getting the line to its target output rather than only for fixing breakdowns.
Stage | What it should deliver | Quality gate |
|---|---|---|
Study | Written basis of design: product range, target capacity, constraint, layout limits | Measured data, not assumptions |
Design | Layout, speed-matched equipment list, hygienic detail | Design review signed off by the plant |
Build | Fabricated equipment, with visible progress and inspection records | Factory acceptance test before shipment |
Install | Installed, connected and commissioned line | Site acceptance test against documented criteria |
Optimise | Stable output at or near target, with support behind it | Constraint re-measured after ramp-up |
BEFORE YOU SIGN
1. Study. What will you measure in our plant before proposing equipment, and what is the written output?
2. Design. Will the line be simulated before fabrication, and does the layout fit our building as it stands?
3. Build. Where is it fabricated, under which quality system, and how can we see progress and inspection records?
4. Install. Who signs the declaration of conformity for the assembled line, and what are the site acceptance criteria?
5. Optimise. Who responds when something fails, how quickly, and who is accountable for reaching target output?
The same distinction between selling a machine and engineering a line runs through How to Spec a Seafood Processing Line: 7 Questions to Ask Before You Buy, and conveying, often the part that ties a line together, is covered in our conveyor systems buyer's guide.
System integration in food processing is the engineering of separate machines into one production line that works as a unit, with matched speeds, a layout that fits the building, consistent hygienic design, connected controls and a single commissioning. It runs in five stages: study, design, build, install and optimise.
The five stages are study (measuring the plant, product and constraint), design (layout, simulation and hygienic detail), build (fabrication to a documented standard), install (integration and commissioning on site) and optimise (ramp-up, support and re-measuring the constraint). Each stage should end in a documented deliverable and a quality gate.
A factory acceptance test is carried out at the vendor's site before the equipment ships and checks mechanical assembly, electrical and control function, performance against specification, safety circuits and documentation. A site acceptance test is carried out after installation at the customer's plant and checks installation, utility connections, integration with plant systems and performance in the real environment. It follows a completed, signed factory acceptance test and is not a repeat of it.
Under the EU Machinery Directive, the person who builds an assembly of machinery from individual machines is treated as its manufacturer and is responsible for the EC declaration of conformity and CE mark for the whole assembly. If the contract does not allocate this, the operator is treated as the manufacturer. Regulation (EU) 2023/1230 replaces the Directive and applies from 20 January 2027, so agree the responsibility in writing.
Commissioning starts ramp-up on real product and real shifts. The line should be measured to find where the constraint sits, tuned, and measured again, because relieving one bottleneck moves the limit to the next stage. Havmek provides 24x7 remote support and local in-person support available in under 48 hours.
Havmek delivers end-to-end seafood processing systems built on engineering excellence and sustainable innovation. We combine India’s seafood processing expertise with Europe’s precision engineering, compliance standards, and sustainability ethos to deliver robust, scalable, and hygienic solutions. The solutions cover every stage of the seafood value chain; from grading and glazing to IQF freezing, packaging, and cold storage. All systems are designed around plant layout, throughput requirements, and export-grade quality standards with certified to ISO 9001, ISO 14001, and ISO 45001.
