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Lecture

Guidance following the 2019 Toddbrook Reservoir Incident

Event organised by The British Dam Society

Date
07 March 2022
Time

This event has now ended

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Overview

In 2019, following the failure of the auxiliary spillway at Toddbrook Reservoir, the Secretary of State commissioned Prof David Balmforth to lead an independent review into the incident.

The first part of the report was published in February 2020, which made 22 recommendations. Over half of those recommendations called for new industry guidance for those who own, supervise, and inspect high-risk reservoirs. In Spring 2022, the Environment Agency will publish a suite of new guidance which responds directly to these recommendations.

The Canal and River Trust carried out their own investigation led by Dr Andy Hughes, the findings of which have also been considered during the development of new guidance.

New guidance:

  • Supervising Engineer Guidance – written statements and site visit reports
  • Inspecting Engineer Guidance – concisely share good practices as “standard practices”, such as staying curious when considering previous inspection reports
  • Owners Guidance - how to design, inspect, monitor, and maintain impounding reservoir spillways so they are safe
  • Spillway Design Guide – design principles for better spillways
  • Guidance to Spillway Failure Mechanisms - review of existing literature on spillway failures and failure mechanisms, including accounts of historical case studies.
  • Spillway Examination Guide – principles to help identify safety issues sooner
  • Inspection Information Pack –the records and other information that should be provided to Inspecting Engineers in advance of a planned inspection (published in 2021).

Presentations will provide an overview of the content of each guidance, how it has been developed and the challenges encountered.

Speakers

Kieron Kenny

Kieron Kenny

Turner & Townsend

project management director

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Kieron Kenny

Kieron is a project management director for Turner & Townsend. A mechanical engineer with a background in maintenance and construction, Kieron has over 20 years’ experience of leading teams and delivering engineering projects and programmes for UK water and utilities sector clients.

Viktor Pavlov

Viktor Pavlov

Costain Group

Principal Civil Structural Engineer

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Viktor Pavlov

Viktor Pavlov is a Principal Civil/Structural Engineer at Costain Group Limited.

After graduating as a civil engineer with specialization in hydropower and dams, he worked on a number of embankment dam and small hydropower projects in Algeria and Bulgaria. He also spent two years at the Laboratory of Hydraulic Constructions at EPFL, Switzerland, where he obtained an MSc degree in Energy Systems.

Viktor has been involved in the design of several impounding reservoir spillways and flood risk management schemes in the UK. He has been serving as a UK representative on the ICOLD Technical Committee on Hydraulics for Dams since 2018.

Viktor is the author of several water industry publications including a recently published paper on ‘Flow-induced vibration effects on reservoir spillways’ and a ‘Spillway design guide’ commissioned by the Environment Agency of England.

Tim Daly

Tim Daly

Mott MacDonald

Project Manager

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Tim Daly

Tim is a Project Manager and with Mott MacDonald. After completing a degree in Aeronautical Engineering from the University of Limerick, Tim went on to complete a PhD in Civil Engineering, specialising in marine renewable energy, at the University of Southampton. Tim is an Incorporated Engineer with the Institution of Civil Engineers.

Tim’s experience as a project manager includes management of building and facilities new build and refurbishment projects. Clients that Tim has worked for consist mainly of UK government organisations such as the Defence Infrastructure Organisation (DIO), Ministry of Justice and Department for Education.

Tim’s experience as a civil engineer includes physical scale modelling of large hydraulic structures in specialist hydraulics laboratories, and the design and construction of wastewater infrastructure such as pipelines and gravity sewers.

Andrew (Eddie) Robinson

Andrew (Eddie) Robinson

Binnies UK Limited

Principal Environmental Planner

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Andrew (Eddie) Robinson

Andrew is a Principal Environmental Planner at Binnies UK Limited. He has 20 years’ experience successfully improving flood resilience and reservoir safety. This includes securing funding to strengthen the 16km dam of the Whittlesey (Nene) Washes to satisfy measures in the interests of safety. Eddie enjoys establishing collaborative and tailored approaches to achieve common goals.

An example of this was addressing specification oversights in Phase 2 of the 2009-10 National Reservoir Inundation Mapping programme. He has co-authored various R&D publications including ‘Accounting for residual uncertainty: updating the freeboard guide’ (Defra, 2017).

Eddie also possesses a unique set of transferable skills in other sectors and disciplines, notably examination of alternative solutions under the Habitats Directive for Wylfa Newydd Nuclear New Build.

For more information please contact:

Elira Alushi