Serco Public Serco Waste Characterisation Services Advise | Design | Integrate | Deliver Overview of Waste Characterisation and Related Services LLW Repository Ltd Customer Forum Rheged Centre, April 2012

Serco Public Presentation Structure Serco overview and relevant capability Background to Waste Characterisation Services frameworks Case studies Service delivery Key messages

Serco Public Technical Services Independent advice to nuclear propulsion Serco Materials Testing Laboratory, Risley Serco Radioactive Handling Facility, Risley LLWR: Tier 1 Civil Nuclear

Serco Public Relevant Nuclear Competence Project Management Radioactive Waste Management Optioneering Radiological Dose Assessment Radiation Protection Computer Modelling Waste Characterisation ANSWERS software Sellafield Contaminated Land & Groundwater Management Programme IRAS Contamination Survey Gamma Spectrometry

Serco Public Serco and LLWR Integrated sub-contractor to UKNWM Ltd –Technical and financial understanding of LLWR business –Aligned with securing cost effective management of UK waste streams 2011 ESC understanding: –Derivation of the radiological capacity for the LLWR –Development of WAC –Key radionuclides during Period of Authorisation UKRWI understanding –Existing and planned waste streams  Cost effective consultancy NDA Strategic LQM understanding –Current and future land quality waste arisings on all NDA sites LLWR Vault 9 “We understand the need to extend the lifetime of our national repository”

Serco Public Services Available via LLWR Framework Objective: –To improve LLWR confidence that waste streams are:  Appropriate, Minimised and WAC compliant Means: –Make available to waste consignors a high quality, consistent characterisation service –Assist/augment/integrate with existing teams Physical, chemical and radiochemical characterisation –In-situ measurements –Sampling and analysis Undertaken by people who understand: –Waste Hierarchy –Segregation and treatment of waste –Maximisation of the use of excluded, exempt and VLLW –Occupational and environmental radiation protection

Serco Public To Assist LLWR Ltd in its own Waste Assurance Programme Provide independent verification of customer’s wastes –Confirmation that waste received complies with the repository’s Waste Acceptance Criteria  requirement under Environmental Permit Services: –Verification monitoring –Verification sampling and analysis –Equipment and process verification Our Role in the LLWR Framework

Serco Public Verification Monitoring, Sampling and Analysis To assess activity in waste packages for comparison against customers’ own radioactivity content measurement Methodology –Examine customer data –Produce container activity/dose mathematical model  Geometrical and physical container properties  Non-homogenous density and radioactivity  Calculate total detection efficiency –In-situ dose-rate and High Resolution Gamma Spectrometry measurements –Compare in-situ measurements against model –Verification of consignment  Gamma fingerprint  Declared activity

Serco Public To include provision of test items for deployment to customer sites To verify and assure the customer assay processes and equipment Calibrated test items to be provided by NPL –Previously conducted waste drum inter-site comparison exercises –Readily transferable verification methodology Will include witness of customer methodologies and their data interpretation Deliverables include written report Equipment and Process Verification

Serco Public To support auditing of waste consignors by providing suitably qualified and experienced auditors Serco Environment & QA manager supported by: –Additional experienced Serco auditors –Experienced NPL auditors  UKAS assessors experienced in auditing laboratory compliance under ISO17025 standard Deliverables will include written Audit reports Audit Support

Serco Public Radiological Safety and Compliance DURING CHARACTERISATION AND ASSURANCE WORK IRR 99 –Co-operation with client RPA to determine who is “Radiation Employer”, so the duties can be assigned to each party –Serco is an HSE recognised RPA body RMT Notification –Ensuring, prior to consignment, that consignee is willing and able to accept the consignment under their Permit Consignment and Carriage –Samples etc. normally consigned in Excepted Packages (UN 2910) –Serco has an “all classes” DGSA, who specialises in Class 7 dangerous goods

Serco Public Case Study 1: JRC ISPRA, Italy IN-SITU ASSAY AND SAMPLING The problem –Components of a legacy test rig contained 0.5 – 4 kg DU in 1100 kg sodium. –Distribution of the DU key factor in waste treatment and disposal options The solution –High sensitivity gamma flux surveys of the massive components to identify locations where DU was concentrated –Quantification by in-situ HRGS with mathematical calibration The outcome –Strategy decided to segregate DU, treating the small quantity of sodium by WVN –Supported by subsequent sampling and laboratory analysis, once it was practicable to open up the components

Serco Public Case Study 2: Pile 1 Chimney OPTIMISATION OF WASTE MANAGEMENT STRATEGY The problem –4500 tons of concrete –High activity concentration contamination on inner near surface, rapidly reducing with depth to high volume VLLW The opportunity –Effective segregation would significantly reduce the quantity of waste sent to LLWR Our contribution to BPEO process –Use of a number of innovative in-situ and ex-situ techniques, and modelling to describe contamination distribution –Model development to predict effect of different segregation options on waste quantities and operator dose

Serco Public Example 1: –Pile Chimneys’ Free Release Monitoring System –Windscale Pile 2 Chimney concrete represented a HVLA waste –Waste segregation optimised by a 3-stage monitoring system  Initial screening  Conveyor for particle  1m3 bulk bag monitor –3000t of 4300t of concrete transported as ‘free release’ –Saved capacity at LLWR and site VLLW facilities Innovation in Measurement Services

Serco Public Example 2: –IRAS Depth Profiler ™ –Delivers 1-mm resolution depth profile without the errors introduced by mechanical core sectioning –Collimated gamma spectrometer –Analysis of drilled cores, either on site or in lab –Pile 1 Chimney at Sellafield  30 cores  95% goodness of fitting Innovation in Measurement Services

Serco Public NDA DRP Frameworks Recently reappointed on the Direct Research Portfolio –For example, Lot 3, Site Restoration –Earlier rapid characterisation research –Contaminated material that does not have a reliable gamma fingerprint –Demonstration of technologies –Proposed forward programmes  Collation of data from site licence holders  Proposals and prioritisation of tasks  Dissemination of information

Serco Public Waste Characterisation Service Delivery

Serco Public Geographical Distribution Excellent Coverage Rapid Response Reduced Carbon Footprint 1.Westlakes 2.Risley 3.Quedgeley 4.Harwell 5.Winfrith 6.Egremont 7.Barrow 8.Malton 9.Leyland 10.Queensferry/Deeside 11.Worcester 12.Sittingbourne 13.Dounreay Additional Service Capability

Serco Public Safe Delivery 2011: RoSPA awarded President’s Award –10 successive years achieving their Gold Award standard for Occupational Health & Safety Embedded learning from 5 decades experience –Continuously developing operational, behavioural and observational safety processes and procedures Excellent record of safe delivery –Engaged in on-site activities on UK nuclear licensed sites –For example, 93,000+ man hours on a complex project at Sellafield without a Lost Time Accident Safety remains our number one priority as we continue to work towards our Zero Harm goal

Serco Public Key Messages Organisation with an impeccable nuclear safety and assurance pedigree Appointed as a LLWR framework contractor, providing a full range of waste characterisation services Understand LLWR and its objectives through our ESC and RWI work Understand the diverse range of LLWR customers Research and Innovation –Proven track record of waste characterisation research –Ideas for the future We are experienced, capable and committed to ensuring successful delivery of these services

Serco Public Nick Stone Waste Characterisation Framework Manager Tel: Mob: E: Web: Key Contact for the Waste Characterisation Service