Stephen Whittaker

Stephen Whittaker Email and Phone Number

Principal Waste & Decommissioning Consultant PhD CChem FRSC @ Cavendish Nuclear
warrington, united kingdom
Stephen Whittaker's Location
Hale, England, United Kingdom, United Kingdom
About Stephen Whittaker

I am a highly motivated and experienced nuclear chemist with over 28 years experience, who has developed extensive knowledge of nuclear decommissioning and radioactive waste management projects. I have worked on a variety of complex and high profile nuclear decontamination/decommissioning projects, mainly at the Sellafield site in Cumbria. I have developed innovative solutions to extremely complex and challenging decommissioning issues whilst developing knowledge and experience of the nuclear industry including waste management/fuel treatment options, radionuclide package inventory estimation, sampling/waste characterisation and effluent treatment facilities. An accomplished scientist, who is used to managing multi-disciplined teams of scientists, engineers and contractors and is able to effectively communicate both written and verbally to customers, colleagues, stakeholders and all levels of company management structures.

Stephen Whittaker's Current Company Details
Cavendish Nuclear

Cavendish Nuclear

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Principal Waste & Decommissioning Consultant PhD CChem FRSC
warrington, united kingdom
Employees:
857
Stephen Whittaker Work Experience Details
  • Cavendish Nuclear
    Technical Community Lead - Waste Management
    Cavendish Nuclear Jul 2024 - Present
  • Cavendish Nuclear
    Principal Waste And Decommissioning Consultant
    Cavendish Nuclear Jan 2021 - Present
  • Galson Sciences Limited
    Senior Consultant
    Galson Sciences Limited Oct 2020 - Jan 2021
  • Nuvia Uk
    Principal Waste Consultant
    Nuvia Uk May 2019 - Sep 2020
    Birchwood, Warrington
  • Sellafield Ltd
    Technology Manager
    Sellafield Ltd Jun 2006 - May 2019
    Risley, Warrington
    Contracted as a Technology Manager since 2009 in the First Generation Magnox Storage Pond project stream. This role had responsibilities that included:• Production of Project Technical documentation• Check/comment on technical documentation provided by development contractors• Technical assessment of competitive tender processes for future development work• Manage technical interfaces with key stakeholders Co-responsibility for the management of technical underpinning tasks to support technical options to treat legacy pond fuel and isotope cartridge materials. Tasks included U corrosion expansion modelling studies, U corrosion lateral expansion experimental trials, in line grout mixing trials, polymer encapsulation studies, product/package finishing options, in-container vitrification, cold vacuum drying treatment options, C14 and tritium isotope extraction techniques and chemical conversion studies. This has involved the specification and management of technical work, liaising with 4 sub-contractor companies and overseeing tasks involving approx 20 contract staff. I had specific responsibility for engaging with RWM that included:• Preparation of cLoC submissions for proposed treatment options for legacy fuel/fuel bearing wastes and isotope cartridges• Responsible for managing all technical aspects relating to submission of future disposability assessments to RWM Ltd for Self-shielded boxes• Review of subsequent RWM assessment reports and instigating issue resolution strategies to address appropriate action points arising in assessment reportsFrom 2006 – 2009, I was contracted to the FGMSP project with responsibility for improving the knowledge of the sludge material in the pond. This involved devising improved characterisation strategies, radionuclide/chemical inventory assessments, site sampling and analysis capabilities etc. Considered a subject area expert in this area and a Centre of Excellence leader for Magnox sludge characterisation.
  • Galson Sciences Limited
    Associate Consultant
    Galson Sciences Limited May 2011 - Apr 2018
    Oakham, Leics
  • Innusol Consulting Ltd
    Founder And Director
    Innusol Consulting Ltd Jun 2006 - Apr 2018
    Warrington, United Kingdom
    InNuSol Consulting is a consultancy providing technical support and resource enhancement to key areas within the nuclear industry. Specialises in providing pecialist technical advice to legacy ponds and silos remediation projects including the characterisation and behaviour of legacy wastes and the implementation of novel radioactive waste conditioning technologies.
  • Amec Nnc
    Senior Technical Consultant
    Amec Nnc Aug 2001 - Jun 2006
    Warrington, United Kingdom
    RSC/industry linksAppointed RSC industrial representative for NNC in 2003.Responsible for initiating the assessment of NNC graduate training scheme for accreditation by RSC in 2004/05 which was successfully granted.Technical ConsultingTechnical specialist for installation, commissioning and training of staff in the operation of Gas Liquid Chromatography for use in high temperature reactor coolant gas corrosion monitoring. Responsibilities included development of a routine gas sampling procedure for simultaneous quantitative detection of gases resulting from reactor coolant corrosion. Automation of this monitoring provided a cost and efficiency saving to Nuclear Electric who contracted NNC to provide this service in support of the UK AGR reactor fleet.Technical support to Dounreay DFR and PFR decommissioning projects. Specifically, development of the Water-Vapour-Nitrogen process to treat Na and NaK contaminated materials and the complex chemistry associated with the growth of hydroxide and superoxide crusts of Na and K in low oxygen and water vapour environments in contact with bulk and residual liquid metal alloy NaK. Provided chemical decontamination and decommissioning support to the Medium Active and Highly Active cells at UKAEA Harwell and Culham JET facility.Health Physics and Waste ManagementQualified Radiation Protection Supervisor, authorised BNFL Low Level Waste (LLW) Co-ordinator and Waste Skip Controller responsible for providing health physics and waste consignment support to the BNFL Sea Lines Recovery project involving up to 100 personnel including divers, ships crew/management and BNFL project staff from 2004 - 2006.
  • Bnfl
    Research Associate
    Bnfl Oct 1996 - Jul 2001
    Cumbria
    Provision of chemical consultation services for routine and non-routine plant support decontamination operations and demonstration of in situ decontamination processes in support of Sellafield decommissioning projects. Specifically, effluent disposal options, chemical and engineering constraints for safe operation, HAZOP studies, COSHH assessments and method statements.Extensive experience of practical laboratory work and publishing reports on various development projects related to effluent treatment and the understanding of chemistry reaction mechanisms in a nuclear environment. These projects include: the removal of Cs and Sr from radioactive liquid effluents and the removal of aqueous Pu, U and Tc species from waste streams by using complexants and precipitants.Responsible for deploying chemical decontamination operations in many types of radioactive environments. For example, Pu and U contaminated operational and redundant buildings, spent fuel storage ponds and fission product contaminated reprocessing plant buildings. Optimised experimental and pilot decontamination testing programmes utilising a working knowledge of chemical speciation modelling and metal dissolution kinetics, gas evolution, chemical speciation modelling of spent decontaminant liquors, and oxidative destruction of organic chelates in waste liquors containing fission products, U, Pu and Tc.Co-sponsor of developing decontamination/decommissioning technologies including supercritical carbon dioxide solvent extraction of actinides from soft plastic wastes and soils, at several Russian research institutes funded by the International Science and Technology Committee at various sites, primarily the Khlopin Radium Institute in St. Petersburg.

Stephen Whittaker Education Details

Frequently Asked Questions about Stephen Whittaker

What company does Stephen Whittaker work for?

Stephen Whittaker works for Cavendish Nuclear

What is Stephen Whittaker's role at the current company?

Stephen Whittaker's current role is Principal Waste & Decommissioning Consultant PhD CChem FRSC.

What schools did Stephen Whittaker attend?

Stephen Whittaker attended The University Of Salford, The University Of Texas At El Paso.

Who are Stephen Whittaker's colleagues?

Stephen Whittaker's colleagues are Alan Otway, Lisa-Jayne Alden, Leila Robinson, Neil Jennings, Tracey Shaw, Dean Dacruz, Karl Hughes Bsc, Msc.

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