Controlling allergens and contamination on food packaging machinery : Page 2 of 2

By Gary Kestenbaum in Food Safety on June 09, 2015

Clean-in-Place (CIP) systems like this are a common sight in bottling operations. Photo courtesy Federal Mfg Co.


Important lines of questioning to pursue

In general, professionals responsible for design, purchase, integration and use of packaging and related equipment should understand how their equipment might be compromised to facilitate contamination of consumer foods.  Basic considerations, understandings and evaluations include:  


1.  In the case of multi-product applications, determining whether the equipment is suitable and designed for use with all of the food items and categories that the owner/operator intends to convert.

  • Limitations must be clearly described in accompanying manuals, customer sale   contracts and, when necessary, warning placards permanently attached to the machinery.


2.  Understanding equipment design features intended to inhibit contamination.

  • Is the hardware all stainless steel or equivalent non-porous food-approved materials, designed to inhibit corrosion, fragmenting, fatigue, cracking or otherwise degrading?
  • Are all conduits, conveyances and compartments effectively sealed using materials certified for the intended food use? 
  • Is it free from recesses and crevices which may intake and retain liquids or powders that will ultimately become microbially contaminated and then unknowingly “dispensed” into future packaged food?


3. Can the equipment be effectively cleaned and sanitized to eliminate all traces of matter, internally and externally? 

  • Is it intended for Clean-in-Place (CIP), Clean-Out-of-Place (COP), immersion and reasonable changeover or has it been designed for a “dry brush-down” without wet wash, sanitizing chemicals or post-sanitation swabbing and microbiological testing?
  • If not, what secondary steps are implemented to insure that allergens and contaminants have not invaded or are residing in, on or near the equipment?
  • Are all components and accessories designed to withstand water pressure, sanitizing and cleaning chemicals, abrasion and normal “abuse”?
  • Have the maintenance and repair manuals been customized to include language and procedures which allow, assist and effectively describe what materials, parts or systems to inspect, evaluate, adjust or replace in order to maintain the integrity of the equipment process safety designs?
  • Are all mandatory procedures, limitations and prohibitions clearly and effectively described in the accompanying literature and in the PLC program(s) in order to avoid customer and service technician errors, omissions and misuse?


4. Is the customer’s organization set up so that the equipment engineers have an ongoing dialogue with safety, regulatory and production professionals (internal or external) regarding equipment use, design, sanitation and the risks of allergenic, microbial, chemical and physical contamination?

  • Is all equipment included in the HACCP risk assessment?  Is an equipment engineer on the HACCP evaluation team?
  • Has the equipment sanitation and changeover process undergone full HACCP analysis?


5.  Once installed, is the equipment and the process it supports likely to induce or support cross-contamination or, alternately, restrict and control it?


6.  What credentials are required for the inspectors and technicians who will challenge and validate the cleanliness, sensory neutrality and environmental suitability of the equipment following a changeover and before certifying the equipment “production-ready”?  

  • Can the regulatory director sign the client cross-contamination certificate without fear or concern that it is incomplete or inaccurate?


7.  Do you validate or audit your food equipment safety processes using internal or consulting inspection or by reviewing expert protocols which dovetail with current safety program expectations?  


Further cautions


Labeling the “sell unit”, or consumer purchasable, with the phrase “manufactured in a facility which contains or processes (one or more allergens or other sensitive ingredients)” does not represent a replacement for best food safety preemptory practices, including proper equipment design, procurement, sanitation, maintenance and validation.


These subjects, like all precepts of food and packaging safety, can seem overwhelming and onerous. Under the Food Safety Modernization Act, each manufacturer, supplier or vendor supporting a food-related supply chain is expected to create and implement processes using safe and suitable materials and equipment which effectively insure the safety of the intended food product(s).  In the event of an incident which results in contaminated items reaching distribution, every aspect of your process will be exposed to the scrutiny of the FDA, other regulators and safety experts.


Safety within each function in the food industry requires understanding, knowledge, commitment, execution and validation. Once the knowledge relating to allergens and contaminants has been acquired by the involved project managers on the “equipment side”, the next step is effective and honest collaboration with the safety, regulatory and production champions.  Once the process is managed, executed, validated effectively and documented in a written process manual, a template exists for future equipment-based initiatives.


Best practices suggest that clients do business with equipment vendors who are similarly trained and aware of food component and system risks.  Better yet, inspect your existing equipment, inspect surfaces and components and ask yourself “would I eat or drink product that contacted these surfaces?”


If the answer is “no” or if you even hesitate when thinking about it, you may need to revisit the requirements for your equipment design or process. Think practically second, think safety first!


Gary Kestenbaum has 40 years’ experience in the food and packaging industries, six as a supplier with National Starch, 18 as a product developer with General/Kraft Foods and 15 as a packaging engineer and developer with Kraft. In his current position as Senior Food Packaging Safety Consultant with EHA Consulting Group, Kestenbaum provides guidance on packaging safety and suitability-related projects for raw material manufacturers, converters and associated supporting professionals. He can be reached at [email protected] or 410-484-9133. The website is


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