High-Care, High-Risk and Low-Risk Zones: PPE at the Barrier

Plants that make ready meals, sandwiches, chilled desserts, cooked meats and other ready-to-eat food usually divide their floor into zones of different hygiene risk. Customers and standards use varying names for them, most often low risk, high care and high risk, and the exact definitions depend on the scheme and the customer. What is common to all of them is the principle: the further a product is along towards being ready to eat, the stricter the control of what people and equipment bring in. This guide looks at how single-use PPE fits that principle, and where plants most often get the barrier wrong.

The idea behind zoning

A raw or low-risk area is expected to carry a higher microbial load than the area where cooked or ready-to-eat product is handled. If staff, equipment or footwear move freely between them, that load travels with them. Zoning, physical barriers and changing procedures exist to stop that. PPE is one tool among several, alongside layout, air flow, handwashing and cleaning, and it is only effective when the procedure around it is followed.

What changes at the barrier

• Footwear: a change of footwear or a fresh pair of shoe or boot covers, normally over a step-over bench or barrier so that feet never touch the floor on the wrong side.
• Outer garment: a clean gown, apron or coverall specific to the zone, in the zone colour, put on after the change.
• Head and face: a fresh hair net and beard cover where the rule requires it, put on before entry.
• Hands: handwashing and sanitising at the barrier, as defined by the site procedure.
• Disposal: single-use PPE from the lower-risk side is removed and discarded at the barrier, not carried across.

Dispensers and bins on both sides

A barrier fails when it is inconvenient. If the only dispenser is on the wrong side, or the bin is far away, staff improvise. Provide a dispenser for each size and type on the clean side, a bin on the lower-risk side, and clear signage so people know the order of steps. Keep spares of every item in the changing area so a missing size is never a reason to skip a step.

Colour as a visual control

Using a different colour for each zone makes a breach visible without anyone checking a record. A person in a lower-risk colour on the high-care side stands out immediately. The colour scheme should be written into the procedure, applied to hair nets, gowns and shoe covers consistently, and reinforced by training. See Colour-Coding Disposable PPE by Zone for how to set one up and keep supply consistent.

Visitors, maintenance and contractors

People who do not work in the zone every day are the most common source of barrier breaches. Visitors and contractors should receive the same barrier routine as staff, with an induction and the correct PPE issued in the correct colour. Maintenance staff who move between zones deserve a clear rule on when PPE is changed, including after touching bins, floors or equipment. The audit angle is in the Disposable PPE Checklist for Food Safety Audits.

What Disponord supplies

Disponord manufactures and exports disposable hair nets, beard covers, sleeve covers, aprons, shoe and boot covers, visitor gowns and coveralls in the colours a zoning scheme needs. Our products are supporting equipment for the plant hygiene procedure; the procedure and the zone definitions stay with the producer. Send your zone list through the quote form for a proposed range.