Nuclear Services

MWH’s technical staff understand the operating practices, processes and regulatory requirements associated with the nuclear industry which are backed by MWH’s industry-leading expertise in environmental remediation and reclamation services.

• Appraisal and scoping studies

• Project controls and planning

• Engineering design

• Site characterisation

• Accelerated Site clean-up and closure

• Decommissioning and license termination

• Project Management

• Programme Management

• Groundwater evaluation

• Water and wastewater treatment

• Temporary works

• Stakeholder engagement

Programme & project management and

technical services to support nuclear

new build and decommissioning

MWH Nuclear Services provide programme, project management, technical and

project control services to support both nuclear new build and the demolition,

decommissioning, environmental remediation and waste management support

of redundant nuclear facilities.

MWH Global specialises in strategic consulting, technical engineering, environmental and construction services for clients in multiple industries, focusing on water, energy and environmental services.

US Experience

MWH has provided $2.63 billion of environmental restoration services, including $560 million of cradle-to-grave Hazardous, Toxic, and Radioactive Waste (HTRW) services to the Federal Government in the past five years. This work has been accomplished under the regulation and oversight of multiple regulatory agencies and other federal, state and local environmental protection authorities.

Our approach to performing these HTRW services is based on one premise - to focus on driving sites to least-cost closure as quickly as feasible. MWH recognizes that closing a site may occur at any point during the remediation process, from studies and design through remediation and short-term O&M.

MWH has broad experience in the demolition, decommissioning, and closure of industrial facilities as well as specific manufacturing and remedial control remedial action waste management units.

MWH has an established track record of successfully working with regulatory agencies on behalf of its clients. Our approach is to obtain regulatory acceptance of necessary and sufficient standards, which requires establishing and maintaining a cooperative, trusting working environment with HTRW regulators.

Our regulatory knowledge and experience has helped us to expedite and implement innovative, cost-effective, risk based solutions for complex HTRW projects at federal facilities, Superfund sites, municipal, and privately-owned sites. Our steadfast emphasis on proactive, positive regulatory relationships has led to accelerated environmental investigations and property transfers.

Our US experience ranges from investigation and application of risk assessments through remedial technology development and evaluation, design, construction, remedial action, and site closure for environmental remediation, decontamination and demolition, and handling radioactive and mixed wastes.

UKAEA, Winfrith

Front end engineering of the decommissioningIn 2004, MWH were awarded a front end engineering contract to provide de-risking services to UKAEA at Winfrith. MWH acted as Lead Consultant and managed a virtual team of specialists, including Studsvik UK, Assystem, Pell Frischmann, Electrowatt-Ekono, Alpha Engineering, James Fisher Nuclear and Neat 3D. Under this contract, MWH worked on three main issues:

SGHWR

The Steam Generating Heavy Water Reactor was a prototype power producing reactor, rated at 300MW, which operated between 1968 and 1990. The reactor is now in a passive care and maintenance condition.

MWH assessed options for decommissioning of the SGHWR using value engineering techniques, to decide the best approach.

MWH optioneered a preferred approach to segmentation and ILW processing, produced a concept design report, maintenance plan, operations plan, a cost and risk estimate. In addition, we specified & procured a nuclear rated Industrial Robotic Demolition Machine; and wrote the technical specification for the design and build of a mock up of the SGHWR reactor.

Time scales for the workWork commenced in May 2004 and was completed in December 2005.

Success factorsThe work resulted in a reduction in the projected time frame of 5 years and a reduction in costs by over 30%

Dragon

This research reactor, rated at 90 MW, required a similar approach to the SGHWR, but the technical challenges were greater as space was very confined and activated graphite was involved. MWH optioneered a preferred approach to segmentation and ILW processing, produced a concept design report, maintenance plan, operations plan, a cost and risk estimate.

Time scale for the workThis project was started in October 2004 and completed in March 2006.

MWH Nuclear Services

NASA Plum Brook

Reactor Facility

Decommissioning

Project

Front end

engineering for

UKAEA at Winfrith

Success factorsThe work resulted in an overall reduction in the projected work of 5 years - reducing the estimated completion date from 2020 to 2015. Costs were reduced by 30%

Interim ILW Store

In September 2004, UKAEA requested MWH to investigate options for the storage of ILW on site at Winfrith. MWH supported this request with the preparation of a concept design report for the on-site store. Site walk downs allowed accurate information to be gathered (as there was limited as- built information) whilst specialist engineers carried out in-depth surveys. Structural and civil engineers used computerised finite element analysis techniques to maximise the available capacity of the store.

Mechanical and electrical surveys were undertaken and nuclear ventilation design was carried out to ensure that store maintained an environment which would provide suitable conditions to store the ILW packages over the 20 year design life.

In support of the concept design package, a cost estimate and timeline programme using Primavera planning tools was prepared. To ease visualisation of the store, a 3D model simulation was prepared.

Time scales for the workThis project started in July 2005 and was completed in March 2006.

Success factorsThe work resulted in significant increase in capacity of the store - from 135 to 161 ILW boxes. Project estimates were reduced from £5m to £3.5M. Anticipated construction risks were also reduced.

Nuclear Decommissioning Authority

In 2006, MWH were awarded a 3 year framework to provide cost and project controls support to the NDA. Under this contract, MWH have worked on a wide variety of different challenges for both Herdus House and RWMD, Harwell.

Periodic Performance Analysis & Documentation

MWH assisted the NDA with its capability to articulate earned value analysis across UK sites. MWH worked closely with the NDA’s Project Control & IT departments to develop a specific reporting process and delivered an earned value reporting process with the ability to report by exception, which was integrated into the NDA’s business.

Lifetime Plan (LTP) reviews

MWH supported the NDA with the LTP 2007 post submission reviews. This required expertise in planning and cost analysis. It was essential for MWH to use experience gained during the site surveillance reviews.

Magnox Southern Bundle – Competition of Works

MWH provided project control expertise to the Magnox South competition. This involved sharing MWH’s best practice together with best practice from the APM Body of Knowledge and Prince 2.

Geological Disposal Facility

MWH was tasked with giving a fresh, new approach to the cost modelling process used by the NDA. MWH gathered expert cost estimators, engineers, geologists and nuclear waste specialists for a workshop. Ideas for solutions were

amalgamated and then refined to create a final solution. By using this ‘melting pot’ approach, MWH were able to deliver a solution that was significantly greater than the sum of the individual visions.

MWH provided an innovative and flexible tool with an easy user interface that will enable the NDA to use it not only for their own internal budgeting but also for their stakeholder consultations.

LLW disposal options

The potential solutions to the disposal of LLW vary and each of the situations required identification and a cost estimate to ensure preparedness and minimum disruption to the disposal service provided by the NDA. MWH provided a set of auditable figures for budgetary reconciliation using our mPROVE™ tool.

Faslane Naval Base

During 2005 a review was undertaken to ascertain the readiness of the base for the new Astute Class attack submarines. As a result, the Clyde Strategic Programmes Directorate (CSPD) was created in order to develop and implement (in conjunction with BNS) good programme and project management practices and procedures across the base. The CSPD strategy builds upon OGC guidelines and draws upon industry best practice (i.e. APM B of K).

MWH helped to set up the main output programmes as well as the development and implementation of basic project management practices and procedures.

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Contact Information

Neil CrellinClient Service Managert: 44 (0) 1946 848160m: 44 (0) 7894 811297e: neil.a.crellin@mwhglobal.com

Health, Safety and Environment Management

MWH operates an Environmental Management System (EMS) in accordance with ISO 14001, as part of our own quality management systems. MWH is committed to the health and safety of all and to preserving our environment. We have a shared vision of ES&H goals and objectives, and understand the difference in objectives versus outputs.

MWH has achieved 11 consecutive RoSPA Gold Awards for our consulting. We have also achieved 4 consecutive RoSPA Gold awards in our Constructors company, which includes subcontractor management MWH has an excellent safety record, which translates into lower premium rates and reduced risk to our Clients.

Management of Quality and Quality Assurance

of MWH Services

Quality Management starts at the highest level of MWH, with the board and senior management committed to implementing, maintaining and consistently improving the process of delivery to our customers.

MWH operates an effective Quality Management System (QMS) which we will bring to every contract. Registered to ISO 9001, Quality Management is driven in MWH by a core team of quality professionals supported by a network of project quality coordinators.

Faslane Naval Base

Site Readiness

Programme

Contact UsMWH UK Ltd, Seamill Suite, Fleswick Court, West Lakes Science Park, Moor Row, Whitehaven, CA24 3JZ

About MWH

MWH Global is a strategic consulting, technical engineering, environmental and construction services firm leading the wet infrastructure sector. Offering a full range of services and innovative, award-winning solutions beginning in the initial planning phases through construction and asset management, we partner with our clients in multiple industries to implement projects and programs that focus on water, energy, natural resources and infrastructure.

Our nearly 8,000 employees in 35 countries spanning six continents are dedicated to fulfilling our purpose of Building a Better World, which reflects our commitment to sustainable development. MWH is a private, employee-owned firm with a rich legacy beginning in 1820.

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