ISO 22000 clause 8.5.1.5: describe the process that actually handles the food
ISO 22000 clause 8.5.1.5 brings together flow diagrams and descriptions of processes and their environment. The food safety team needs an accurate representation of how materials and products move through the operation, plus enough context to analyse hazards. A tidy diagram is useful only if it represents the work that actually happens.
What clause 8.5.1.5 requires in practice
Clause 8.5.1.5 is the umbrella for two connected pieces of preliminary information: flow diagrams and a description of the processes and their environment. Between them, they give the food safety team a faithful picture of how materials become finished food. The three sub-parts deal with preparing the diagrams, confirming them on site, and describing the surroundings in which each step runs. The team keeps all of this as documented information and updates it as the operation changes. The clause does not prescribe a drawing style, software or level of artistry. It asks for a picture that is clear, accurate and detailed enough for hazard analysis to work from, supported by a description of premises, equipment, existing controls and outside requirements. The outputs are the diagrams, the written description, and the evidence that someone checked both against the real operation.
Prepare a diagram suitable for analysis
Preparation includes the sequence and interaction of steps, relevant outsourced processes, inputs, rework or recycling and points where products, by-products or waste leave the flow. The diagram should support analysis of where hazards may occur, increase, decrease or be introduced.
Choose a level of detail that makes meaningful decisions possible. A diagram with only receiving, production and dispatch can hide important stages. Excessive detail can also obscure the main sequence if unrelated administrative activities overwhelm the food-process flow.
Group products or processes only where the diagram remains accurate. Show relevant branches or differences instead of forcing distinct arrangements into a single line.
Confirm the representation on site
On-site confirmation requires the food safety team to check accuracy, update the diagrams where appropriate and retain the documented information. Walk through the operation with people who understand it and examine relevant variations.
Look for unofficial workarounds, temporary storage, rework paths or outsourced stages that may not appear in the design. A diagram approved when the facility opened may no longer represent the current process.
Confirmation should inform the hazard analysis. If a missing stage is found, consider whether the analysis also needs review rather than treating the change as a drawing correction only.
Add the operating context
Process descriptions cover relevant layout, equipment, contact materials, processing aids, material flows, existing PRPs, parameters, controls and external requirements. Include appropriate seasonal or shift-related variations.
The description explains conditions a diagram cannot convey alone. Two apparently identical process steps may operate under different conditions that affect hazard analysis. Link the detail to the relevant stage so the team can use it without searching through unrelated files.
Why clause 8.5.1.5 matters to the business
Hazard analysis can only be as good as the picture of the process behind it. A missing rework loop, an overlooked outsourced step or a shared storage area can hide the very place where a hazard enters. When that happens, the plan looks complete on paper and still leaves a gap in practice. Customers who visit a site often compare the diagram with what they see, and a mismatch quickly damages confidence. Regulators and auditors behave the same way. A reliable process picture also saves time later, because investigations, changes and training can start from something people trust instead of being rebuilt each time.
How to implement clause 8.5.1.5
The most dependable way to handle this clause is to treat the diagram and its description as one piece of work, built and tested by the people who run the process.
- Decide the products or product categories each diagram will cover, and keep separate diagrams where routes differ in a way that matters.
- Draw the sequence with the operators, including inputs, packaging, utilities, rework, recycling, by-products, waste and any outsourced steps.
- Walk the diagram through the premises on site, during real production, and correct what the walk reveals.
- Write the supporting description covering layout, equipment, contact materials, existing controls and outside requirements, linked to the steps they explain.
- Note seasonal or shift differences that change how the process runs, and say how they are handled.
- Place both documents under document control and name an owner who hears about every change to the process.
- Feed any correction back into the hazard analysis rather than only redrawing the picture.
Illustrative food-manufacturing example
A manufacturer confirms a flow diagram and discovers that a portion of material is temporarily held and later returned to the process. The route is routine but absent from the drawing. The team adds it, describes the relevant conditions and considers the hazard-analysis implications.
The correction is more than an additional arrow. It changes the information available when assessing hazards and selecting suitable controls.
Illustrative catering example
A catering diagram shows preparation followed by service. An on-site review identifies a transport stage and a handover to a separate service team. The team revises the flow and records relevant responsibilities and operating conditions.
It also examines an evening arrangement that differs from the daytime process. The revised information prevents one shift's work from being assumed to represent the whole operation.
Evidence and common mistakes
Maintain and update the diagrams and descriptions, and retain the result of on-site confirmation as required. A particular drawing application or symbol set is not prescribed. Clarity and accuracy for hazard analysis are the priorities.
Common failures include omitting utilities or rework, treating outsourced work as outside the diagram and checking the drawing only from a meeting room. Another is keeping detailed process descriptions that contradict the diagram or actual equipment arrangement.
Use internal change communication to keep this information current. The best diagram becomes unreliable if changes never reach its owner.
Explore each numbered part
8.5.1.5.1 · draw a flow that reveals food safety questions
A useful flow diagram exposes the stages and interfaces where hazards need consideration. This guide explains the content and level of detail expected when preparing diagrams for ISO 22000. Ingredient-manufacturing and catering examples show how to represent rework, outsourced processes and material entry points without turning the diagram into an unreadable map of unrelated activities.
8.5.1.5.2 · confirm flow diagrams against actual work
On-site confirmation checks whether a flow diagram describes the operation people actually perform. This guide explains the food safety team's role, useful observation choices and the handling of differences. Food-manufacturing and catering examples show why informal routes, temporary arrangements and shift variation can matter, and how a corrected diagram should connect with hazard-analysis review.
8.5.1.5.3 · explain the conditions behind the process flow
The same process step can present different food safety questions under different conditions. This guide explains the supporting description of layout, equipment, materials, PRPs, parameters and external requirements. Manufacturing and catering examples show how shift and seasonal variation can matter, and why a flow diagram needs enough contextual detail to support sound hazard-control decisions.
Frequently asked questions
Does a facility layout replace a flow diagram?
No. A layout can support the description, but the process sequence and interactions still need a clear graphical representation.
Can one diagram cover several products?
Yes, where it accurately represents the relevant processes and makes meaningful differences visible.
Does confirmation require a specific checklist?
No prescribed checklist is given. The food safety team must confirm accuracy on site and retain appropriate documented information.
Walk the process before finalising the analysis
Arrange a discussion about process mapping and on-site confirmation with Sterling. Scope can include team workshops, documentation and suitable Effivity ISO & GRC automation software support. Review HACCP Awareness, then connect the work with the preliminary-information guide and hub.