Harsh washdown environments push equipment to its limit. High-pressure spray, elevated water temperatures, heavy-duty detergents, and sanitizers - together, these conditions create one of the most demanding environments any piece of industrial equipment will ever face. At KPM Analytics, we have been refining the design of vision inspection systems that survive and perform in these environments for over a decade, starting in the baking industry and expanding increasingly into the harshest washdown applications in food production.

What "Harsh Washdown" Actually Means

When food processors talk about harsh washdown, they are describing more than just getting something wet. They mean high-pressure spray, often at elevated temperatures, combined with heavy-duty chemicals - detergents, sanitizers, and caustic agents - used to ensure equipment is left as clean as possible. It is an environment that really pushes equipment to the limit.

And it is about more than waterproofing. As our engineering team puts it, hygienic design is fundamentally about reducing risk - and that means three categories of risk: biological, chemical, and physical. Biological risk means ensuring there is no place on or in the equipment where contamination can harbor and grow. Chemical risk means ensuring that anything that comes into contact with food cannot leach contaminants into it. Physical risk means ensuring no materials or hardware can break free and end up in the product. Hygienic design has to address all three.

How We Design for the Outside of the System

Our starting point is always component selection. Every element that makes up one of our systems needs to be up to the task of surviving in a harsh washdown environment - IP69K-rated enclosures, fully stainless steel construction, and certified materials throughout.

From there, a lot of our design focus goes into eliminating harbourage points: the places where debris, moisture, and microorganisms can hide from a sanitation team. In practice, that means welding rather than bolted connections wherever possible to reduce hardware joints, using open structural profiles with generous radii and smooth surface finishes, and making sure there are no enclosed dead spaces where contamination can build up unseen.

For anything that is harder for a sanitation team to access directly, we build in clean-in-place solutions and dedicated access points. The goal is simple: there should be no place in our systems that a sanitation team cannot effectively reach.

Protecting What Is on the Inside

Our vision inspection systems are full of sensitive technology - cameras, processors, electrical components - and the manufacturers of those components are not always designing them with a high-temperature pressure washer in mind. That falls to us.

Our preferred approach is to remove the hazard entirely where possible. If we can relocate processing components like computers, PLCs, or electrical panels off the production line entirely - to a nearby wall mount or adjacent location - we dramatically reduce what we need to protect from direct washdown exposure.

For components that have to stay on the line, we rely on heavy-duty enclosures with robust sealing and custom access points that allow the areas needing cleaning to be cleaned without exposing sensitive internals. And critically, we manage the environment inside those enclosures too - controlling temperature, preventing overheating, and resisting condensation. Putting something in a sealed box introduces its own risks if the thermal environment inside is not properly managed.
‍

Serviceability Is Not a Compromise

A common misconception is that heavily protecting and enclosing equipment makes it harder to service. In our experience, the opposite is true. Because our components are shielded from the elements, when a technician does need to go in to refocus or replace a camera, everything is in pristine condition. There are no seized bolts, no corroded connectors, no components damaged by repeated chemical exposure. The protection that keeps washdown out also keeps the internals in the kind of condition that makes service faster and easier.

How We Validate Before Systems Go to Site

We lean heavily on the iterative improvements we have made over more than a decade in the field. We use IP ratings and manufacturer certifications for chemical compliance as guidance, but the real proof is in testing - exposing systems in our production facility to simulate the conditions they will face, and being prepared to iterate and resolve anything that comes up in the field.

The Mistakes We See in the Field

The most common mistakes we observe come from not thinking about the full lifecycle of the equipment - focusing only on the production task it was built to do, and failing to consider how it gets installed, cleaned, and maintained over time.

That narrow focus is where field modifications creep in. Parts get bolted onto systems after the fact, improvised changes get made, and those modifications are rarely done with the same attention to hygienic design as the original engineering. The most common equipment weak spot we see in washdown environments is exactly that: something someone added afterward.

Other common issues include removable parts that lack a defined home during sanitation, meaning they go missing or are reassembled incorrectly, and systems installed too close to walls or other equipment to be cleaned effectively. How a system interfaces with adjacent equipment, how it bolts to the floor, and whether it provides adequate clearance for cleaning are all part of how we scope a project from the start.

The Real Cost of Getting It Right

Upfront equipment costs are a genuine challenge to the adoption of hygienically designed systems. But the right way to look at it is through the lens of total cost of ownership. Consider the cumulative time spent cleaning a piece of equipment over its entire lifespan. Skipping a clean-in-place solution might save money at purchase - but if it means a team member is spending time every night disassembling, cleaning, and reassembling that equipment, the upfront saving is quickly outpaced by the long-term operational cost. And disassembly introduces its own risks: parts get lost, components get damaged, and cleaning quality becomes inconsistent.

Shaving 15 or 30 minutes off a routine sanitation or maintenance task, multiplied across the life of the equipment, represents significant savings - and in today's labor market, that efficiency matters more than ever.

What the Next Five Years Look Like

Regulatory and corporate requirements for hygienic design are increasing, driving real improvements in the market. We are seeing better access to critical components - bearings, motors, belt materials, plastics, and metals - that genuinely meet the strict requirements for use in hygienically designed systems, along with improved traceability so we can document exactly what materials were used throughout a build.

We are also seeing the industry move from traditional 2D line layouts toward 3D digital twin approaches, which allow interfacing challenges - clearances, wall proximity, equipment transfers - to be identified and resolved before anything is physically built. That shift naturally supports better hygienic design outcomes.

And increasingly, we are seeing sensors and IIoT capabilities being used to take a proactive rather than reactive approach to maintenance. Detecting elevated humidity inside an enclosure or abnormal vibration in a drive shaft before it becomes a problem - being able to reseal an enclosure or replace a gearbox before it starts leaking - is a significant step forward for keeping washdown environments under control.

Work with the Experts

You do not need to be a hygienic design expert yourself. What matters is connecting with people who are. Whether through your equipment supplier or other available resources, seeking out those conversations early is the most effective way to make good design decisions and avoid the costly mistakes we see in the field.

At KPM, our team brings over two decades of experience engineering vision inspection systems for food production environments. To learn more about our approach to hygienic design and inline vision inspection, contact our team or explore our vision inspection solutions for meat and poultry production.

‍