Waste Management
In radioactive waste management, the Pöyry Energy business group has gained considerable experience of both strategy development and implementation. Work has been carried out in the following subject areas:
- Waste Inventories and Waste Characterisation
- Waste Storage and Retrieval
- Treatment and Encapsulation of Waste
- Waste Packaging, Handling and Transport
- Disposal of Wastes
Waste Treatment Plant
The Pöyry Energy business group's experience on Waste Treatment Plant comprises design, through to commissioning and safety case preparation.
Services provided include also specialised analysis, such as heat transfer, fracture mechanics, probabilistic safety analysis, radiation shielding and environmental impact.
Waste Disposal Sites
Assignments have involved low, intermediate and high level wastes and have ranged from initial feasibility studies (technical and economic) through conceptual design and engineering to radiological safety assessment and safety case preparation.
The experience gained enables the Pöyry Energy business group to provide waste management consultancy not only for radioactive materials but for a wide variety of chemical waste.
Waste Storage Plant
Extensive multinational experience has been gained by the Pöyry Energy business group in concept design, detailed design and safety case support of Waste Storage Plant. Specialised analysis of ventilation systems for such plant has also been provided.
Waste Transport
The Pöyry Energy business group has performed several transport safety studies, notably on thermal effects during transport. Complete transport system radiological assessments have been conducted. These included detailed radiation shielding calculations for conditioned low, intermediate and high level waste. Shielding, stress and thermal analysis of fuel transport flasks are carried out using the most current computer codes.
Waste Disposal Sites
Operating nuclear power plants and other facilities of the nuclear fuel cycle are the greatest producers of radioactive waste. Safe disposal of such by-products must be ensured. The Pöyry Energy business group has been involved in several challenging assignments in this field, and has contributed to the resolution of this problem in the United Kingdom, Switzerland and elsewhere, in the form of general studies, conceptual engineering and safety assessment of waste repositories. This work has been focused on all types of waste, namely the high, intermediate and low level wastes.
Furthermore, the categorisation of nuclear wastes with respect to their radiological and chemical hazards, and the setting of design and handling requirements for their conditioning represent other areas where the Pöyry Energy business group has proven its skills under various contracts to Belgian, British, German and Swiss organisations.
Summary Project List
Preliminary safety assessment for storage of drums of irradiated DRAGON fuel within the Treated Radwaste Store (TRS) - Winfrith Technology Centre
Environmental Impact Statement for Dry Fuel Store and peer review of Safety Case - Scottish Nuclear Ltd
Safety case preparation for Waste Encapsulation Plant EP1 - BNFL
ILW storage concept design - UKAEA Winfrith
Safety and economic comparison of centralised and dispersed storage - UK Department of Environment
Shielding design for HLW and ILW stores - BNFL, WEP Store and UKAEA Harwell
Shallow and deep repositories Environmental Impact studies, waste movement HAZOP, Operational (conventional) Safety analysis - UK Nirex Ltd
Drigg Disposal site concept design for new trench, groundwater migration calculations, human intrusion risk assessment - BNFL
Development of post closure safety analysis methods - UK Environment Agency
Consultancy on waste inventories in Belgium, advice on waste characterisation and source terms for design and for licensing - ONDRAF/NIRAS
Preparation of UK radioactive waste inventory, regular update since 1987, covering all past, present and future wastes - UK Nirex Ltd/DEFRA
Support on nature and quantities of radioactive waste - UK Nirex Ltd
Polymers in the encapsulation of radioactive wastes, survey of developments, test and uses, applicability to UK wastes - UKAEA
Letter of Comfort work, preparation of submissions and evaluations - AWE plc, UK Nirex Ltd
Drum inspection facility option study, from identification of criteria, options, and Multi Attribute Utility Analysis - AWE plc.
Assessment of nuclide activities in reprocessing residues from Swiss base load utilities - EGL
Surveys of radwaste storage conditions - Magnox Electric and UKAEA
Implementation and testing of a database system - UK Nirex Ltd | 
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