TÜV SÜD Nuclear Technologies has significant expertise in helping clients to understand the costs of decommissioning which feeds into decision making and business case assessment.
- Our services include:
- Bespoke cost models to plan decommissioning tasks
- End state scenario costing
- Technology roadmaps showing underpinning requirements and their sequencing
- Consultants have been trained in the use of the DEMplus software.
- We have extensive experience of lifetime plan development
- Expertise in decommissioning waste assessment to feed planning and estimation tasks.
- Expertise in decommissioning safety cases to feed planning and estimation tasks.
- Peer review of decommissioning safety cases
Additionally, as part of our wide resource pool we have access to project controls specialists and so have the capability to develop detailed project schedules and cost estimates such that data can be used to compile sanction grade estimates, funding applications and programme validation.
TÜV SÜD Nuclear Technologies undertake decommissioning challenges by the application of a 'waste led' approach. This involves the application of process wiring diagrams and a nodal approach to define, understand and communicate the challenges. This ensures an integrated, robust and holistic approach to the decommissioning challenge. Having understood the challenge, we provide decommissioning guidance and input to strategies and methodologies at a range of levels. Typically, this is achieved by implementing a staged and structured approach that may involve a range of stakeholders.
Our services include
- POCO characterisation requirement studies
- Lifetime plan analysis including review of the packages of scope to ensure that decommissioning challenges are addressed appropriately
- Opportunity identification such that critical path activities can be reached quicker
- End state definition
- Stakeholder workshops
- Peer review
- Option Studies
- Feasibility Studies
- Lessons learned facilitation
We have undertaken studies for a range of clients as the tools we use are adaptable to a range of situations. Examples range from support to POCO definition activities at repossessing facilities to Power Station care and maintenance preparations opportunity realisation.
TÜV SÜD Nuclear Technologies have amassed extensive experience on a large variety of decommissioning projects and therefore have a unique understanding of the tools and techniques which can be applied to any particular decommissioning challenge. We approach any decommissioning challenge by 'applying a waste led approach' and endeavouring to understand how the decommissioning/waste retrievals step fits within the life cycle of the waste process.
Our services include:
- Decommissioning methodology development for alpha facilities where material can be contact handleable with the challenge being to avoid internal uptake to personnel
- Contact handleable ALARP assessment
- Decommissioning methodology development for beta/gamma facilities
- Extensive knowledge of remote handling systems, tooling and size reduction techniques, including practical, hands on experience.
- Decommissioning methodology development for tritiated facilities
- Provision of independent, unbiassed advice to help our clients define their options and identify the most appropriate decommissioning tools, methodologies and techniques
- Decontamination methods identification
We have strong links with a number of organisations that specialise in solving specific decommissioning challenges. By partnering with the appropriate organisation, we can offer clients a solution to an urgent, short term decommissioning need or conduct a longer term development and test programme.
When radioactive material becomes associated with equipment, structures or facilities where its presence is detrimental to safety, the environment or operational/decommissioning activities, there can be requirement to undertake decontamination. Drivers for decontamination might include:
- In operational facilities, accumulations of deposits in pipe work, vessels etc can lead to process blockages, reduced process efficiency and safety issues
- Instances of containment breach can lead to elevated dose rates in work areas and also increase the risk of contamination spread
- During decommissioning there is often a need to undertake decontamination to reduce overall dose uptake and if appropriate to facilitate the use of manual intervention
- Decontamination can be used to facilitate the re-categorisation of waste with the aim of minimising the volume of material which is routed to the higher activity categories
For each challenge we seek to understand and characterise the problem such that the optimal decontamination solution can be defined. This involves gaining an appreciation of the substrate to be cleaned, the key properties of the contamination present and the extent of decontamination to be achieved. From the outset, we also seek to understand the waste routes available and their compatibility with down stream plants and processes.
Having defined the decontamination method we can provide the client with confidence in the applicability of the technique based on experience gained in similar situations elsewhere and usually via trials of the selected technique. Such trials are often done inactively using mock ups of the plant/equipment which require decontamination. We would develop the decontamination process until it is suitable for active facility deployment. This would also include the development of the accompanying safety case, method statements and waste routing justifications etc.