A useful hygiene specification maps the product-contact path, cleaning method, safe access, cross-contact risk, verification and line-release evidence for the actual products and site.
The cleaning specification should identify every product-contact and contamination-transfer point, how it is accessed, the approved cleaning method, how reassembly is checked and what evidence releases the line. A generic statement such as “stainless steel machine” does not define cleanability or allergen control.
| Area | Questions to resolve | Evidence for the brief |
|---|---|---|
| Product path | Which hoppers, screws, weighers, pumps, hoses, nozzles, chutes and guards can contact product or drips? | Product-flow diagram and contact-part list. |
| Cleaning method | Is the route dry-cleaned, wet-cleaned, dismantled, flushed or cleaned by a validated combination? | Site cleaning procedure, chemistry, tools, water and drying requirements. |
| Changeover risk | What must be removed before the next allergen, flavour, colour, fragrance or chemical product? | Product sequence, risk assessment and release criteria. |
| Access and isolation | How are movement, electrical, pneumatic, hydraulic, gravity and stored-energy hazards controlled before intervention? | Site safe system of work and isolation requirements. |
| Line clearance | How are old product, pouches, film, labels, code data and rejects removed from the whole line? | Line-clearance checklist and approval responsibility. |
| Verification | What visual, swab, allergen, microbiological or other method is appropriate to the site's hazard plan? | Validated method, sampling points, limits and retained result. |
Map the full product path, contamination-transfer points, removable parts, access, cleaning method, chemistry, tools, isolation, rinse or dry-down, inspection, reassembly and release evidence. Include the upstream feed and downstream handling where they can return product or contamination to the filler.
Plan the changeover from the next-product risk, not from a fixed cleaning time. Define the allergen or cross-contact hazard, sequence products where possible, remove residues from identified harbourage points and use the site's validated verification method before release. The final procedure remains the food business operator's responsibility.
Neither is universally better. Dry powders may require controlled vacuuming, dismantling and dust containment, while liquids and pastes may require draining, flushing or wet cleaning. Water can create additional risks in equipment not designed for it. Select the method from the product, machine design and site hygiene plan.
The site must identify every energy source and the isolation, lock-off, stored-energy release and verification steps required before access. Cleaning and unblocking should be covered by a competent risk assessment and safe system of work. Do not rely on an emergency stop as the only isolation method.
Record allergens, microbiological risk, colour, flavour, fragrance, chemical compatibility, particles and the consequences of carry-over.
Use the site's approved controls for electrical, pneumatic, hydraulic, gravity and stored energy before guards or product-contact parts are opened.
Clear the hopper or tank, dosing system, transfer path, pouch or film, code data, rejects and downstream accumulation.
Follow the validated dry, wet, dismantled or flushed procedure using approved tools, chemistry and contact time.
Check identified points using the site's documented visual and analytical methods and record any deviation or repeat clean.
Confirm parts, seals, fasteners, guards, tools, recipes, labels, film or pouches and reject containers before start-up.
Inspect the first-off pouches and retain the cleaning, verification and release record linked to the batch.
The Food Standards Agency guidance on cross-contamination and its allergen guidance for food businesses support a risk-based site procedure. The HSE maintenance guidance addresses safe maintenance and isolation, while EHEDG publishes hygienic-design principles for food-processing equipment. Application-specific risk assessment and validation remain essential.
Link interventions, wear parts, faults and safe return to service to the machine record.
Review aftercare evidence →Control recipes, physical parts, first-off pouches and restart after cleaning.
Validate the changeover →Use a product-and-pack matrix to separate cleaning and cross-contact requirements by customer job.
Plan a multi-format line →Send the product matrix, cleaning method, change frequency and site verification requirements so Lancing can review practical access and product-path needs.
