Layout Design Recommendations

The flow of materials within the decanting station should be logical and streamlined. Consider the sequence of operations from receiving materials to decanting and then to storage. This flow should minimise the need for unnecessary handling, reducing the risk of spills. An effective layout will incorporate designated areas for each stage of the process, ensuring that materials move smoothly through the station without cross-contamination or risk of spills. For more detailed guidance on layout design, refer to Spill risk assessments, Bund design guidelines and DSEAR compliance resources.

1) Plan the station as a simple, one-way workflow

A decanting station layout works best when it behaves like a “one-way system”, reducing backtracking and awkward manual handling. Aim for a single, obvious direction of travel for people, containers, and paperwork.

Receipt and check-in zone: space for delivery, inspection, labelling, and confirming compatibility before anything enters the transfer area.
Decant/transfer zone: the only place where lids are opened and liquids are transferred. Keep it uncluttered and designed around the most common container sizes.
Temporary staging zone: short-duration “next step” area for sealed containers waiting for storage or onward use (not a second storage location).
Storage zone: segregated storage (by hazard class and compatibility) away from the transfer point where practicable. HSE advises designated storage arrangements and keeping containers closed when not in use. ^[1]

2) Create clear zoning to reduce cross-contamination

Cross-contamination often comes from shared tools, shared drip areas, and poor segregation. Zoning is your simplest control.

Dedicated equipment by zone: funnels, pumps, wipes, and spill response items should be assigned to the transfer area and not migrated elsewhere.
Compatibility-led separation: keep incompatible materials (for example acids and alkalis, oxidisers and fuels) physically separated and clearly labelled. Where higher hazard inventories exist, use separation principles referenced by HSE as part of safe plant layout and segregation. ^[2]
Clean/dirty boundaries: define where “clean handling” starts (for sealed, wiped containers) and where “dirty handling” ends (drained, sealed waste and used absorbents).

3) Make spill control a built-in part of the layout

Spill control is most effective when it is “designed in”, not added as an afterthought.

Secondary containment (bunding): design the decanting area so that foreseeable leaks and overfills are captured and cannot migrate into walkways or drains. Bunding and spill retention are a common feature of UK guidance for flammable liquid areas and storage arrangements. ^[1]
Flooring and slip resistance: choose surfaces that stay predictable when lightly contaminated and can be cleaned quickly; see Anti-slip flooring materials. Slips and trips guidance emphasises suitable flooring and managing contamination. ^[3]
Drainage strategy: if drainage exists, ensure it cannot carry contamination beyond the station. For hazardous wastes, UK guidance highlights the need to contain contaminated run-off and prevent incompatible wastes contacting each other. ^[4]

4) Keep ignition control and ventilation in mind

If flammables are handled, the layout must support safe ventilation, control of ignition sources, and sensible separation distances. HSE provides practical guidance on controlling fire and explosion risks from flammable liquids, including safe storage/handling arrangements and designated areas. ^[5]

Ignition control: keep likely ignition sources out of the transfer zone; align the layout with your DSEAR assessment where applicable (see DSEAR compliance resources).
Ventilation and vapour management: ensure the transfer point is not in a stagnant corner; good airflow reduces vapour build-up risk. ^[6]
Escape routes: do not locate storage or transfer activities where they compromise access/egress. HSE notes storage should not jeopardise means of escape. ^[1]

5) Design for people: access, handling, and housekeeping

A “safe” layout also needs to be easy to operate day after day.

Working height and reach: place drums/IBCs so valves, bungs, and pump connections are accessible without climbing or overreaching.
Clear walkways: keep defined pedestrian routes separate from the decanting footprint (and from any likely drip line).
Housekeeping points: include a defined cleaning point, bin/waste container locations, and a place for PPE to reduce clutter at the transfer point.

6) Put emergency response where it is actually needed

Emergency response equipment should be positioned to support the layout, not hidden in a cupboard “somewhere nearby”. HSE’s spill control guidance discusses measures that support safe operation and emergency response planning. ^[7]

Spill response at the transfer zone: keep appropriate spill kits and drain protection within immediate reach of the decanting point.
Clear escalation route: signage and a simple “what to do first” instruction (alarm/isolations/contain/clean/dispose) reduces hesitation.
Waste segregation: used absorbents and contaminated materials should have a dedicated, labelled holding point; see Disposal Info.