A sterile processing department is a one-way street with storage at every step. Soiled items come in at one end, trays and sets leave from the other, and the room only works if nothing travels backwards. Sterile processing department storage planning is therefore mostly about direction, separation and staging space — and only then about which shelving or rack goes where. This page covers the workflow and the storage problems it creates. Labs USA lays the room out, specifies and quotes the storage, and coordinates delivery and installation.

Enclosed bin storage cabinet inside a clean storage room with shelving alongside
6workflow stages that each need storage
2sides that must not mix
Freelayout and needs assessment
Phasedinstalls for departments that cannot close

The SPD workflow, stage by stage

Storage that ignores the direction of travel is the fastest way to make a processing room unworkable — no matter how good the shelving is.

1. Soiled receiving. Case carts and containers arrive from surgery and procedural areas. They need a defined parking footprint, not a corridor. This is where most departments are short of floor.

2. Decontamination. Wet work, washers and handling space. Storage here is for consumables, brushes, baskets and racks in the immediate reach of the sinks, in finishes chosen for a wet environment.

3. Prep and pack. Assembly benches with instruments, containers, filters, wrap, indicators and count sheets all within reach. Storage density at the bench is what sets assembly speed.

4. Sterilizers and cooling. Loading racks and loading carriages in, and a cooling area out that cannot be skipped or crowded — cooling space is the most frequently under-drawn part of the room.

5. Clean storage. Sets, trays and containers held until needed, in locations that are countable and reachable without stacking.

6. Case cart build and dispatch. Carts picked, staged and sent, with a footprint for loaded carts waiting to go.

Storage room with long runs of drawer modules along both walls

Notice how many stages need floor that is not shelving: cart parking at both ends, cooling space, and staging in the middle. In tight departments those are exactly the areas that get sacrificed to fit one more storage run, and the room slows down.

The storage problems specific to sterile processing

Keeping the soiled and clean sides apart

The separation between the decontamination side and the clean side is your department’s rule, set with your infection prevention team and your reviewers. Our job is to make the storage layout support it rather than quietly undermine it: storage that belongs to one side is not reachable from the other, carts and baskets used on the soiled side have a home there so they are not carried across, and pass-through points are not blocked by a shelving run. We design to the separation criteria your team provides — we do not interpret standards or survey criteria, and we make no claim about what a product does to the contents inside it.

Bench-side reach at prep and pack

Assembly is a reach problem. Every item an assembler needs that is more than a step away costs seconds hundreds of times a day. The fixes are wall-mounted rails and bins above the bench, shallow divided trays instead of deep drawers, and a labelled location per consumable rather than a shared shelf. In practice, moving consumables from a store room onto the bench wall is the single highest-value change we make in most existing departments.

Cooling and staging space that was never drawn

Items leaving a sterilizer need to sit undisturbed on a defined footprint, and trays waiting for a cart need somewhere that is not the aisle. Both are floor, not shelving, and both get squeezed first. We draw them explicitly and label them on the layout so they survive the value-engineering conversation.

Technician pulling a divided tray from a storage cart at working height

Case cart flow and parking

Case carts are large, they arrive in bursts, and they need three separate footprints: soiled inbound, empty or clean waiting to be built, and built carts waiting for dispatch. Departments that only drew one end up parking carts in the corridor. Cart counts, cart dimensions and the door-to-door route are inputs we ask for early because they change the layout more than the shelving choice does.

Sets, trays and containers that cannot be stacked

Clean storage has to hold rigid containers and wrapped sets in locations where they can be picked without moving anything else. That pushes towards one set per location, shelf pitch set from the tallest container you actually run, open wire or basket racks for visibility, and enough locations that stacking never becomes the workaround. Where a set is only used monthly, it still needs its own labelled home — otherwise it takes someone else’s.

Loaners, consignment and the trays you did not plan for

Loaner and consignment trays arrive unannounced, in unpredictable sizes, and often in quantity. A department with no designated loaner area absorbs them into clean storage, which then overflows. A defined, labelled receiving and holding area for loaners — even a small one — protects everything else in the room.

What we need from you to plan it: room dimensions with door positions and swings, the number and size of case carts in circulation, the number of sets held in clean storage and the tallest container you run, your bench positions and washer and sterilizer locations, and the separation criteria your infection prevention team applies. That set of answers is enough for a layout.

Getting the zones and the direction right

An SPD layout is really six footprints in a fixed order, and the storage follows from them:

  • Soiled receiving — cart parking, sized from real cart counts
  • Decontamination — wet-environment storage in reach of the sinks and washers
  • Prep and pack — bench-side wall and under-bench storage, densely divided
  • Sterilizer loading and cooling — loading carriages plus a protected cooling footprint
  • Clean storage — one set per labelled location, pitch set by the tallest container
  • Cart build and dispatch — a footprint for built carts waiting to leave

Where floor is short, the levers are the same as anywhere else — re-pitch and re-zone first, then walls and vertical space, then aisle removal with high-density carriages in the clean storage area (see high-density medical storage and hospital mobile shelving). Aisle removal suits clean storage far better than the decontamination side, where wet work and immediate reach dominate.

Mobile shelving bank in a clinical storage room with one aisle open

Finishes follow the environment, not the room name

Within one department you can easily have three environments: wet and wash-down at decontamination, normal dry storage at the benches, and clean storage that gets wiped down regularly. The families we supply are offered in wire, solid and stainless steel and in all-polymer construction, and the sensible pattern is to specify per zone rather than picking one finish for the whole room. Material, capacity and warranty details are the manufacturer’s published figures and we confirm them per model on the quote.

The product detail sits on sterile processing storage and healthcare shelving. Nothing on this page is a specification — it is how to decide what to specify.

Coated mobile shelving installed in a temperature-controlled storage room

Which storage families an SPD usually needs

Open racks holding stacked instrument baskets on wheeled framesSterile Processing StorageThe product-side page: racks, baskets and shelving used through processing and clean storage areas.
Wire shelving unit with clear bins beside a solid-deck shelving unitHealthcare ShelvingWire, solid, stainless and polymer shelving specified per zone — dry bench areas, wet areas and clean storage.
Row of tray carts loaded with colour-coded modular traysCase & Transport CartsCase carts, loading carriages and transport carts, plus the parking footprints they need at both ends of the room.
Modular basket split into narrow compartments by wire dividersBins, Trays & DividersDivided bench-side storage for consumables, filters, indicators and small instruments, with front labelling.
Slim floor-standing frame filled with clear bins for point-of-use storageWall-Mounted StorageRails, panels and bins above the assembly bench — usually the highest-value change in an existing department.
Mobile shelving carriages with aisle-opening handles in a storage roomHigh-Density Mobile StorageAisle removal in clean storage where set counts have outgrown the room.

Also useful: hospital sterile storage racks and hospital modular rack systems for basket and tray storage.

How an SPD storage project runs

1Walk the departmentDimensions, doors and swings, washer and sterilizer positions, bench layout, cart counts and sizes, set counts, and the separation rules you work to.
2Draw the six footprintsZones and direction of travel first, with cart parking, cooling and staging drawn as floor, then storage fitted into what remains.
3Specify per zoneFamilies and finishes chosen per environment, with capacity called out so you can check it against set counts and loaner peaks.
4Phase the installationProcessing rarely stops. We sequence run by run around your schedule, keeping the clean and soiled sides usable throughout.
5Review with the teamAssemblers and techs will move labels and re-pitch shelves once they use it. We expect that and build a review into the project.

Have your SPD laid out before you specify storage

Send the room dimensions, cart and set counts, and a couple of photos of where things are currently stacked. The Healthcare Storage Design Center gives you layout support, intake checklists and planning tools — no charge, no obligation.

Departments on either side of processing

Racks of colour-coded modular trays used for supply pickingCentral Supply / CSRConsumables, par levels and the restocking route that keeps the prep and pack benches supplied.
Two enclosed modular carts with a work shelf pulled outOperating Rooms & Surgical CoreThe other end of the case cart route — core storage and case picking. In progress.
Enclosed transport cart shown open and closed side by sideEndoscopyIts own one-way flow and transport logistics, planned the same way. In progress.

New department or a renovation? Storage for new construction and expansion covers working from a drawing set, submittals and install sequencing. The healthcare storage by department index lists every area we plan.

Related products and resources

Sterile processing storage planning FAQ

Where do most SPD storage layouts go wrong?
Floor that is not shelving. Cart parking at both ends of the room, cooling space and tray staging get squeezed out to fit another storage run, and then the department works around the shortage every day. We draw those footprints first and fit storage into what is left.
Do you tell us how to separate the clean and soiled sides?
No — that is your department’s rule, agreed with your infection prevention team and your reviewers. We take the separation criteria you give us and lay the storage out so it supports them: nothing shared across the line, dedicated homes for soiled-side carts and baskets, and pass-throughs kept clear.
How do we size clean storage?
From set counts and the tallest container you actually run, not from shelf counts. One set per labelled location, pitch set by the tallest item, plus a defined allowance for loaner and consignment trays and for growth. If you send us the counts we will size it and show you the capacity on the layout.
What finishes suit a processing department?
It depends on the zone, not the room. The wet and wash-down area around decontamination, the dry bench area and clean storage are three different environments, and we specify per zone from the wire, solid, stainless and polymer options the manufacturers publish. Model-specific materials, capacities and warranty terms are confirmed on the quote.
Can you improve an existing department without a renovation?
Usually yes, and it is where the quickest wins are. Bench-side wall storage, re-pitched shelves, divided trays replacing deep drawers, and defined cart footprints can be done without touching the building. We will tell you honestly when the constraint is the room rather than the storage.
Does storage affect how long a processed item can be held?
That is governed by your facility’s policies and your reviewers, and we make no claim about it. What we can do is provide the manufacturer’s published material, dimension and finish information for the products we quote, and design the storage to the handling and separation criteria your team specifies.
Can the work be done while the department keeps running?
Yes, in phases. Processing rarely gets to stop, so we sequence run by run, hold displaced items on temporary shelving or carts, work around your schedule, and leave each phase clean and usable before starting the next.

Get a sterile processing storage layout and quote

Send the department dimensions, cart and set counts, and your separation criteria. You get a zoned layout, a parts list and a quote including freight, installation scope and lead times per family — layout work is free either way.