Nuclear DecommissioningStep 04 / 5

Waste Packaging & Transfer

The logistics operation that actually governs the programme - segregating at the work face, monitoring and releasing the clean fraction, packaging the rest to the criteria the disposal route sets, recording every package and moving it to store or off site.

Last updated 2026-08-25

Typical duration

Runs continuously for the whole of the dismantling campaign, commonly 10-30 years on a large site, with the packaging arrangements established and proved before any significant cutting begins.

What is Waste Packaging & Transfer?

Everything cut on a decommissioning site becomes a package, and the package is the real product of the programme. Packaging looks like a back-end activity and it is nothing of the sort: the waste acceptance criteria set by the disposal route decide the container, the container decides the piece size, the piece size decides the cutting technique, and the cutting technique decides the enclosure, the ventilation and the plant. The tail wags the dog completely. Sites that plan the packaging first and the demolition second finish; sites that do it the other way round end up with a yard full of material that has been handled twice and accepted nowhere.

The single biggest lever in the whole operation is segregation at the work face. Most of the mass of a redundant plant is ordinary concrete, brick, steel and cable that has no reason to go anywhere special, and material that can be shown to be clean and released by the licensee under arrangements agreed with the regulator leaves as ordinary construction waste or as scrap with a market value. Mix it with anything else and the whole batch takes the difficult route, at a cost per tonne that is orders of magnitude higher. Segregation is done where the material is generated, by people with the right monitoring equipment and the discipline to use it, because sorting a skip afterwards is slow, unreliable and expensive.

Packages are also records. A container arrives at a disposal route with a data set describing what is in it, how it was characterised, how it was filled and how it was closed, and a package with an incomplete record is not acceptable regardless of what is inside it. That is why the packaging area on a decommissioning site looks like a small factory: weighbridges, monitoring positions, handling frames, grout filling plant, lid closure and testing stations, labelling and a data system that ties every package to the position in the structure the material came from. Radiological monitoring and control, and anything relating to nuclear material, rest with the licensee and the regulator and are outside the scope of this guide.

Compare the methods at a glance

Method comparison graphic coming soon

When and why is Waste Packaging & Transfer used?

Packaging and transfer run continuously alongside the dismantling, for the whole length of the programme, and the arrangements have to be established and proved before any significant cutting starts. That order is not a preference. A decommissioning site can only generate arisings as fast as it can package them, so the packaging capacity, not the demolition capacity, is what sets the rate of the whole job. It is also the point where the programme is most exposed to things outside its control. Disposal routes are few, they are shared with every other site, they have their own capacity and their own criteria, and those criteria can change during a programme that lasts thirty years. Material with no available route does not disappear; it goes into an interim store, and an interim store is a substantial construction project with a design life measured in decades, a maintenance liability, a retrieval requirement and its own eventual decommissioning. The commercial logic is straightforward arithmetic. The difference in cost per tonne between the easy route and the difficult route is enormous, and the only place that difference can be captured is at the work face, in the minute when somebody decides which container a piece of steel goes into. Everything else in the packaging operation - the plant, the store, the data system, the transport - exists to protect the value of that decision and to prove it was made correctly.

Types of Waste Packaging & Transfer

Explore each method in depth - benefits, limitations, plant and quality control on its own page.

Segregation and release of clean material

Sorting and monitoring at the work face so that material the licensee has established can be released leaves as ordinary construction waste, recycled aggregate or scrap metal with a market value. It is by far the cheapest route available and it is only achievable if the segregation happens where the material is generated.

Containerised packaging to the disposal criteria

Loading cut material into the containers the disposal route accepts, filled, closed, tested, labelled and recorded to the criteria that route sets. The container specification is fixed long before the cutting starts, because it is what determines the piece size everything upstream has to work to.

Encapsulated and immobilised packages

Packages where the voids between the pieces are filled with a cementitious grout so the contents are held in place and the package has structural integrity for handling and stacking. It is a concrete operation with a mix design, a batching plant, a placing method and a curing and testing regime like any other.

Interim storage on site

Purpose-built stores for packages that have no available route yet. They are proper construction projects - portal or reinforced concrete structures with overhead cranes, drainage, ventilation, monitoring and stack layouts designed around retrieval - and they carry a maintenance liability and an eventual decommissioning of their own.

Best suited for

  • Any dismantling campaign, where the packaging capacity rather than the cutting capacity sets the rate of the whole programme
  • Sites with large volumes of ordinary concrete, masonry and metal that can be segregated, released and recycled
  • Programmes with a confirmed disposal route, where the container specification can drive the cutting plan from the start
  • Streams with no available route, where a purpose-built interim store is the only workable engineering answer
  • Long programmes where package records have to remain complete, legible and transferable for decades

Waste Packaging & Transfer: step by step

  1. 1

    Step 1: Establish what the route will accept before anything is cut

    The programme starts by settling the destination for every stream of material, and by getting the waste acceptance criteria for each route written down and understood. Those criteria cover the container, the contents, the form the material has to be in, how it is recorded and what evidence has to travel with it. They then work backwards through the whole operation: container dimensions become maximum piece sizes, contents restrictions become segregation rules at the face, and record requirements become the data system. This step is done once, properly, at the start, and it is reviewed periodically for the whole life of the programme because criteria and routes both change over thirty years.

  2. 2

    Step 2: Segregate at the work face

    Material is separated where it is generated, into the streams that were defined during characterisation, using containers positioned at the face rather than a single skip that gets sorted later. Operatives are trained on the streams and given the monitoring equipment and the working space to use them. This sounds trivial and it is the largest single cost driver on the whole programme, because mixing a small quantity of difficult material into a large quantity of easy material converts the whole batch to the difficult route. Space at the work face is planned for it, which on a congested dismantling job means the segregation layout is designed alongside the enclosure and the access.

  3. 3

    Step 3: Monitor, sort and release the clean fraction

    The clean stream is monitored, checked and released under arrangements the licensee has agreed with the regulator, then handled as ordinary construction and demolition material. Concrete and masonry are crushed and either reused on site as fill or sold as recycled aggregate. Steel and copper are baled or sheared and go out as scrap. Timber, plasterboard and general waste go to conventional recycling and disposal. The volumes are very large, so the site needs a proper materials handling yard with a weighbridge, storage bays and vehicle access, exactly as any large demolition project would. Releasing this material is what keeps the difficult streams small.

  4. 4

    Step 4: Size the pieces to the container

    Anything going into a package is cut to fit, and it is cut to fit at the work face rather than being moved somewhere and cut again. Templates, gauges and clearly marked cutting lines are used because a piece a little over size is a piece that gets handled three more times than it needed to be. Packing efficiency matters as well as fit - a container filled with awkward shapes and large voids costs the same to dispose of as a container that has been packed properly, so the packing plan is worked out in advance for the items that will fill a lot of containers. Where remote handling is involved, the packing arrangement has to be achievable with a manipulator and not just by hand.

  5. 5

    Step 5: Load, fill and close the package

    Containers are loaded at a defined workstation with the handling, monitoring and lifting arrangements the job needs. Where the design requires it, the voids are filled with a cementitious grout to immobilise the contents and give the package the strength to be handled and stacked, which brings a mix design, a batching and placing operation and a curing and testing regime with it. The package is then closed, sealed and tested in accordance with the criteria for the route, weighed and its condition inspected. Closure is a controlled operation with a checklist, because a package that has to be reopened later is a serious and expensive event.

  6. 6

    Step 6: Record the package - the data is part of the product

    Every package carries a data set: what is in it, where in the structure it came from, how it was characterised, who filled it, how it was filled, what it weighs, what its dimensions are, when it was closed and against which criteria. The identifier is applied physically in a way that will still be legible in decades and is held in a data system that will still be readable then too. This matters more than it sounds. Packages routinely sit in an interim store far longer than anyone planned, and the person who eventually moves one will have no other source of information about it. A package with a complete record is transferable. A package without one is stuck.

  7. 7

    Step 7: Handle, buffer store and move the packages

    Packages are moved from the workstation to a buffer store and then to their destination, using container handlers, forklifts, reach stackers, overhead cranes and engineered lifting frames sized for the loads involved. Routes are designed for the weight - hardstanding, ground bearing, turning circles, door and gate clearances, and headroom under services - and stacking arrangements are designed around retrieval as much as around density, because the package needed first is never the one on the top of the stack. Handling damage is the main enemy here, so lifting attachments, edge protection and driver training all get more attention than they would on an ordinary yard.

  8. 8

    Step 8: Transfer off site or into interim store

    Packages leave by road or rail on transport frames designed for the container, under arrangements agreed with the receiving route and with the authorities responsible for the movement, all of which the licensee controls and which sit outside the scope of this guide. Where no route is available, packages go into an interim store built for the purpose - a substantial structure with craneage, monitoring, drainage and a stack layout designed for retrieval, and with a design life long enough to cover a wait that may exceed any current expectation. The store is inspected, maintained and eventually emptied and decommissioned itself, so it is designed from the outset as a building that will one day have to come down.

Plant & equipment

  • Container handlers, reach stackers, heavy forklifts and overhead cranes sized for loaded packages
  • Engineered lifting frames, spreader beams and remote handling attachments matched to each container type
  • Shears, balers, crushers and screens for processing the clean scrap metal stream and recycling rubble into aggregate
  • Grout batching, mixing and placing plant for filling and immobilising package voids
  • Package closure, sealing, testing and inspection stations with the associated checking equipment
  • Weighbridges, dimensional gauges, monitoring positions and labelling and marking equipment
  • Buffer storage hardstanding and purpose-built interim stores with craneage, drainage and monitoring
  • Transport frames, road trailers and rail wagons designed for the specific container and its handling points

Quality control & testing

  • Waste acceptance criteria for every route obtained, understood and worked backwards into the piece size and the segregation rules
  • Segregation carried out and verified at the point of generation, with monitoring records tied to the batch
  • Clean material monitored and released under the licensee arrangements before it leaves as ordinary waste or scrap
  • Piece sizes checked against the container before cutting, using templates and gauges rather than judgement
  • Grout mix designed, batched, placed and tested like any other structural concrete operation, with results recorded per package
  • Package closure carried out to a checklist, then inspected, weighed and tested as the route requires
  • A unique, durable identifier applied physically and held in a data system designed to remain readable for decades
  • Package data checked against the acceptance criteria before despatch, so nothing is transported that will be turned away

Safety watchpoints

  • Handling and stacking heavy packages, where a dropped or destabilised container is the dominant risk in the yard
  • Lifting operations with engineered frames and remote attachments in restricted spaces and inside stores
  • Plant and pedestrian interface in a busy materials yard with continuous container and vehicle movement
  • Crushing, screening and shearing plant, with entanglement, ejection and noise as the main exposures
  • Manual handling and repetitive work during segregation and loading, sustained over years
  • Working at height on and around containers during filling, closure and inspection
  • Vehicle loading, securing and movement on site and on the public highway
  • Radiological monitoring, package classification and transport control, all set by the licensee and the regulator and outside the scope of this guide

Common defects to hunt

  • Poor segregation at the face, converting a large volume of cheap material into a large volume of expensive material
  • Pieces cut before the container was confirmed, so everything has to be recut when the specification is finally issued
  • Containers packed loosely, so the programme buys and disposes of far more packages than the material actually needs
  • Package records incomplete, so a physically acceptable package cannot be transferred and sits in store indefinitely
  • Identifiers that fade, corrode or rely on a data format nobody can read twenty years later
  • Interim stores designed for stacking density rather than for retrieval, so the first package needed is at the bottom
  • Handling damage to containers from lifting attachments and driver error, requiring repair or repackaging
  • Grout voids and poor filling, so the package fails its inspection and has to be opened and made good

How long does Waste Packaging & Transfer take?

Typical duration: Runs continuously for the whole of the dismantling campaign, commonly 10-30 years on a large site, with the packaging arrangements established and proved before any significant cutting begins..

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