Application 1067 3D model showing two stacked RBR S100 above each other and then in a second frame with the lower of the two removed

Case Study: Spinionic™ S100 Deployment

Fukushima

Context

SpinChem® signed an agreement in 2019 with AtkinsRéalis for exclusive rights to their Rotating Bed Reactor (RBR) technology in nuclear environments; coined Spinionic™. RBR’s are available in sizes up to 100 L, ideal for processing large quantities of effluent. For this case study, AtkinsRéalis developed a method of deploying large S100 RBR’s into 1000 m3 tanks for the removal of Iodine-129 from the solution.

Atkins solutions and adde value

An effluent sample was taken from the vessels and bench-scale tests were performed on various concentrations of effluent for different time periods to identify the most suitable type and quantity of media.

 

bench-scale test

 

These bench-scale tests showed that 400 L media was required to decontaminate each tank. As the 100 L RBR is an existing product available from SpinChem®, two such 100 L RBRs were considered to be stacked in order to reduce the number of stages to deployment.

 

SpinChem® S100 RBR

 

stacked S100 RBRs

 

These bench-scale tests showed that 400 L media was required to decontaminate each tank. As the 100 L RBR is an existing product available from SpinChem®, two such 100 L RBRs were considered to be stacked in order to reduce the number of stages to deployment.

 

CFD simulations showing effluent mixing on a single plane of the tank

 

The stacked RBRs are shielded within a mobile recovery unit (MRU), which is craned into position on top of the vessel. During disposal, the MRU is supported by a steel frame and the 100 L RBRs can be lowered out of the MRU individually into shielded 200 L drums below. This disposal method makes use of quick release connections between each RBR and is under development by SpinChem® and SNC Lavalin.

 

3D model of the disposal process with an MRU

Services provided

  • Effluent sample tests for media type and quantity selection.
  • 3D design using Autodesk Inventor.
  • CFD to understand effluent mixing throughout the vessel.
  • Product concepts & prototyping.

 

Key benefits and success factors

  • Scalability of Spinionic to decontaminate large vessels.
  • SpinChem® and AtkinsRéalis' combined knowledge of water chemistry.
  • SpinChem and AtkinsRéalis' problem solving and innovation to generate cincept solutions/prototype.

Industries Nuclear

Topics Reactor Engineering, Downstream Processing

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