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8 Principles of Sanitary Design in the Construction of Food Equipment

Last Updated: July 2, 2019

Food manufacturers face pressure to generate as much profit as possible for their shareholders, which leads to the temptation to cut costs whenever, wherever, and as much as possible. That leads some to bypass the importance of sanitary design in the construction of food equipment used in their companies. They miss the lifetime ROI to be gained from an initial investment into machinery built with solid sanitary design principles.

Applying sanitary design principles to the equipment used in factories allows companies to provide food to consumers in the safest manner possible, which in turn helps them avoid costly PR disasters that arise when contaminated products make it to the public.

Sanitary Design Principles for Food Equipment Construction

Following these principles of sanitary design helps food manufacturers ensure they’re providing the best quality food to market. Food equipment constructed with these guidelines can be cleaned more efficiently, leading to labor cost savings.

Other Benefits of Sanitary Design in Food Equipment Construction:

  • Helps reduce the number of products rejected
  • Lowers the need to rework products or place them on hold
  • Reduces your testing expenses prior to starting operations
  • Lowers your risk of having a product recalled due to contamination

No cost cutting savings cover the value lost when the public loses trust in your brand by associating it with unsafe products.

  1. Keep Raw and Ready-To-Eat Products Separate
  2. Make Things Cleanable on a Micro-Biological Level
  3. Keep Compatibility in Mind
  4. Everything Should Be Accessible
  5. Eliminate Liquid Collection on Food Equipment
  6. Seal Off Hollow Areas
  7. Optimize Sanitary Operations
  8. Create Standard Cleaning Protocols

1. Keep Raw and Ready-To-Eat Products Separate

Design equipment to handle one type or the other, not both. It’s simply not safe to process food meant to be eaten directly with things like meat that require cooking to be acceptable for human consumption.

Encourage clients still using old equipment to make the leap to updated technology. Having equipment capable of processing different lines of products allows for flexibility in expansion efforts.

2. Make Things Cleanable on a Micro-Biological Level

Listeria and other bacteria like to burrow into hidden machine crevices. Your equipment should be designed for cleaning at the most micro of levels.

Floors, ceilings, doors and any other place food contamination could spread need to be accessible to this level of cleaning as well. Everything used in a plant should be inspectable for possible contamination.

Successful Implementation Means:

  • Making all processing surfaces accessible
  • Providing data on the cleanability of your equipment
  • Passing pre-inspection drills based on touch, sight, smell, and taste

3. Keep Compatibility in Mind

The materials used to build your processing machines should complement your food product of choice. Using incompatible materials with the wrong food could lead to corrosion or other issues. That increases the risk of contamination working its way into your machines.

Keeping things compatible removes places bacteria can hide. This lowers the chances of products accidentally making it out of factories with some type of bug waiting to wreak havoc on the population at large.

4. Everything Should Be Accessible

The principle of cleanability touched on earlier ties directly to this guideline. Every zone of a processing plant should be inspection-ready at any time.

This Includes:

  • Making sure food equipment drains away from product zones.
  • Ensuring pieces like chains or product drip pans can be easily removed for cleaning
  • Associating parts removed for cleaning back to original machinery and not allowing it to be lost
  • Making sure cleaning instructions for various machines are visible

Accessibility makes it safe for workers to go in and thoroughly clean food equipment. It also helps to draw up guidelines a chain of responsibility for every piece of machinery.

5. Eliminate Liquid Collection on Food Equipment

Under no circumstances should you allow condensation to gather anywhere on machinery. That creates conditions for bacteria to grow and spread. Design equipment to be self-draining and prevent any water pooling on surfaces.

Take shapes into account. Try to make horizontal frameworks as rounded as possible. Make sure square or rectangle surfaces slant at an angle to encourage draining of any moisture from the exterior.

Also Look For:

  • Dead spaces where moisture might accumulate
  • Adequate belt tension within machinery to keep water from pooling there
  • Any problematic absorbent material

6. Seal Off Hollow Areas Designing Sanitary Food Equipment

Try to minimize the use of any framework in equipment containing penetrations allowing access to moisture and other contamination. Seal those places off if you find it necessary to include them in your food equipment design.

Check for spaces behind things like nameplates bolted to the outside of a piece of machinery with unsealed pop rivets. Make sure you account for easily overlooked contamination crevices like bolts, function boxes, sleeves, and end caps.

7. Optimize Sanitary Operations

Make sure using a machine in normal daily processes does not contribute to the spread of contamination throughout your facility. Normal operations should not allow bacteria to make its way into products.

Things like conveyor belts should be designed to resist moisture build-up and still allow for increased product runs that don’t affect food safety. Never put productivity ahead of looking out for the public interest. Good machinery design allows you to be efficient and reduce contamination risk.

8. Create Standard Cleaning Protocols

Any food equipment used in facilities should come with clear guidelines on effectively cleaning it. There should be no confusion about what to use and how to properly inspect the equipment.

Failing to provide one standard could lead to workers using their own interpretation. That opens you up to the possibility of contamination spreading through your plant and into your food supply.

Following these principles in the construction of food equipment helps you build machinery that’s both efficient and safe to use. Most companies find the long-term investment in properly built equipment worth the long-term payoff in public safety.

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