Revised food safety guideline
By Phil Voysey - 1 October 2020
Guideline 55: a practical guide on the design, implementation and control of
cleaning and disinfection of food factories
Phil Voysey discusses the importance of a guideline on cleaning and disinfecting food factories, and the approaches taken to update one already in
Making products in a facility of a high hygienic standard is an essential requirement of the food industry. Ensuring factories are cleaned and
disinfected effectively is a fundamental prerequisite for the safe production of food and drinks. This involves decisions on when to clean, how to
clean and what chemicals to use to remove physical, chemical and microbiological contaminants.
For many years, cleaning chemical suppliers helped food manufacturers design and implement their cleaning programmes, including writing cleaning
schedules with them. This all came as part of the service package that the chemical suppliers would provide along with their cleaning products. This
is a service that they still provide, however, with the introduction of a comprehensive guideline, manufacturers have acquired a little more
In order to capture best industry practice for cleaning and disinfection of food
factories, in 2008 we put together a working party of food
manufacturers and cleaning chemical suppliers. These professionals produced Guideline 55: Cleaning and disinfection of food factories: a practical
guide. The impartial advice in the guide reflected on the principles of how to produce and operate effective cleaning schedules and plans,
which could be applied in a consistent way across the food industry. It enabled food manufacturers and chemical suppliers to understand the theory
as well as putting this into action in facilities that they were familiar with.
The guide helped industry understand various aspects to cleaning and disinfection, including:
- how to select the appropriate chemicals – based on differences in equipment, facilities and ingredients / foods being handled
- the various methods of cleaning and disinfection
- how to build cleaning schedules
- the timing and frequency of cleaning
- the order in which different stages of cleaning and disinfection should be carried out, and
- how to monitor factory cleanliness
The importance of a standardised guideline
Guideline 55 helped food manufacturers comply with the EU regulations 852/2004 on the hygiene of foodstuffs and 853/2004 laying down specific hygiene
rules for food of animal origin. Complying with these regulations is essential if a manufacturer wants to remain in business.
In putting the guide together, members of the working party were able to come to a consensus on the best approaches of cleaning based on their
personal experiences. As a result, the guide became comprehensive by covering areas such as how to clean particularly tricky areas including drains
and floors. It also dealt with errors that are commonly made. In some cases, hygiene staff in food companies were able to use the guideline as a
definitive ‘authority’ on approaches to specific hygiene-associated issues, thereby giving them leverage for persuading management that their approach
to an issue was the most appropriate, even if it meant management spending money!
The guideline also helps the industry consider the costs and consequences of not cleaning properly and/or frequently enough. As well as protecting the
consumer, it has an economic basis in the prevention of product loss due to microbial spoilage
Guideline 55 highlighted how soiling of surfaces and equipment is unavoidable but put focus on the practical ways of preventing these residues from
accumulating. With this guide, food manufacturers gained a level of independence, in the sense that they were not reliant solely on their chemical
supplier for definitive information on the practices they needed to follow. Having the document readily at their disposal, with instant access to
guidance, manufacturers were able to regularly adapt their cleaning processes as their factories developed. Now it is Guideline 55 itself that is
Updating Guideline 55
Since publication of Guideline 55, a number of changes have been made in the management of hygiene in food production. It is essential that the
guideline aligns itself with these changes to reflect the most up to date thinking, research and developments in cleaning and disinfection. With
this comes new legislation and chemical cleaning products that the industry must comply with and be aware of.
For example, new controls have been introduced concerning sanitation, such as those in the US, under the Food Safety Modernization Act. In
addition, the British Retail Consortium (BRC) has requirements concerning
cleaning (both microbiological and allergens). Cleaning is also included as an integral part of the food safety management system in the Codex
Alimentarius. The guideline needs to align itself with the new cleaning chemicals and techniques that have become available, and products that are
no longer used. This has also been coupled with the production of different product types, equipment and methods.
The one-year project
To remain relevant and up to date, we’ve updated Guideline No. 55: ‘Cleaning and disinfection of food
factories: a practical guide’. The update came as part of a one-year project funded by our members.
The project took a number of approaches to ensure the guideline remains the comprehensive go-to document.
The approaches included:
- forming a consultative group of industry and Campden BRI specialists who met throughout the
project’s duration, and
- researching literature and regulations to collate the most current practices and guidance in cleaning and
The project also included a practical element: the creation of short educational
videos that advise on how to carry out key aspects of hygiene in production. They’re now live and include:
What stage is the guideline at now?
Guideline 55 is in the final stages of production and will be made available by the end of this year.
Additional guideline for Listeria control
A second of our member-funded projects will follow a similar approach to this one. It will produce an
up-to-date ‘one-stop-shop’ guideline document on controlling Listeria during food production.
As 2018 saw the largest listeriosis outbreak ever recorded, the need for this
guideline became clear. Listeria monocytogenes-contaminated South African polony sausage caused 200
deaths and it became apparent that the food industry still does not have the measure of this pathogen. This project will run for two years and the guideline will become available in 2021.
What are the latest findings on cleaning food factories?
Phil is a Section Manager in the Microbiology Department at Campden BRI and his Section’s duties include organising and running
microbiology training courses and the Campden Microbiology Proficiency Scheme. Read more...