Steve Horrocks
Steve is the Nuclear Services Engineering Manager at ABS Consulting’s office in Warrington, United Kingdom. He is a Mechanical Engineer with over 13 years’ professional experience.
Mr Horrocks has worked on most UK nuclear sites at one time performing a variety of assessments, primarily around seismic loading. This has involved scope identification, site investigations and inspections, calculation origination and checking, client liaison and Safety Case report preparation. The work has included extensive use of the Seismic Qualification Utilities Group (SQUG) Generic Implementation Procedure (GIP).
Ian Sharrock
Ian is the Civil Nuclear Services Department Manager at ABS Consulting’s office in Warrington, United Kingdom. He is a Mechanical Engineer with over 25 years’ professional experience.
A significant amount of this experience has been gained in the nuclear industry providing risk and safety assessment input to safety cases. His particular expertise is drawn mainly from structural integrity justifications for power utilities, fuel processing and defence facilities. These include analysis of structures, plant and equipment by finite element and hand calculation methods, plus site evaluation and walkdown methodologies. He has been conducting seismic walkdowns since the early 1990s, having been involved with their introduction to the UK nuclear industry by performing initial pilot studies.
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Date
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29 FEBRUARY 2012
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Time
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18:00 - 20:13
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Event Type
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Associated Society
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An Evening Meeting At Imperial College London
South Kensington Campus
(SKEMPTON BUILDING)
SECED - Seismic assessment of existing & new equipment by experience-based methods
This SECED talk departs from seismic aspects of Civil Engineering to concentrate on what some would argue as far more important - the seismic performance of the equipment housed within the structure.
In areas of low seismicity, the seismic performance of equipment and its ability to withstand a certain intensity of shaking is purely a commercial one, unless of course the consequences of failure are unacceptable to society.
In the US, the individual nuclear power utility companies found themselves with a legacy of existing nuclear power plant for which no, or only minimal, seismic design provisions had been included.
Simultaneously, the risk from nuclear facilities from seismic events was being recognised by the Regulator and facility operators.
To address the problem, without having to think the unthinkable regarding the removal of installed equipment for retrospective shake table testing, the US utilities formed the Seismic Qualification Utilities Group (SQUG) and commissioned data collection from industrial facilities on the performance of equipment when subjected to real earthquakes.
Equipment was grouped into different generic classes, matching a large proportion of equipment found in nuclear power plants.
The performance data was used in support of a specific approved seismic walkdown methodology for the seismic assessment of equipment, leading to the efficient treatment of the seismic risk.
The same methodology has been applied to address the same issue in the UK, where nuclear plant has been designed with no, or only minimal, seismic design provisions.
The talk will describe the history of the problem and the solution strategy, complete with some details on the formal assessment process.
Illustrative examples of application will be given, along with a history of application in the UK.
The methodology subsequently has been developed to also address new and replacement equipment, and an update on the current position in this respect will be presented.
NON-MEMBERS OF THE SOCIETY ARE WELCOME TO ATTEND
Please note that there is no charge to attend.
Seats are allocated on a first come, first served basis.
For further information please contact the SECED Secretary at the ICE on:
Tel: +44 (0) 20 7665 2229 or Fax: +44 (0) 20 7799 1325 or
Email: secretary@seced.org.uk Visit the SECED website at www.seced.org.uk
Disclaimer: Any views or opinions expressed on any matters by the presenters or participants during or in connection with this presentation are solely the views of the authors of the respective comments and/or opinions and must not be taken to be the views of ICE or any other organisation. ICE makes no representations, warranties or assurances concerning any information provided in these presentations and accepts no responsibility for the content and/or accuracy.