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VIBRATION TESTING


Seismic Testing For Nuclear Power Stations


French test house invests in shaker table designed specifically for performing seismic testing for nuclear power equipment.


I


n 2017, French test house Environne’Tech, part of the Emitech Group, began the “Bourgoin- Jallieu 2020” industrial


project involving the provision of an extension to its test centre for equipment qualification and environmental testing. The new 800m2


building is 10m high


and designed for testing large- volume specimens such as aeronautic or rail components, as well as complete vehicles or major installations. It is equipped with special facilities such as a 93m3


❱ ❱ Large seismic testing table serves the increasingly stringent environmental testing requirements of the nuclear power industry


climatic


chamber and a large-volume seismic table that is the most recent addition to the existing equipment. With the “grand carénage” national nuclear plant refurbishment programme being orchestrated by EDF, and after the accident at Fukushima in Japan, demand for seismic testing has grown considerably and specifications in many areas of the industry have been tightened. In response to this trend, Environne’Tech decided to invest in equipment specifically for this purpose. The “great refit” programme will involve the extension of the useful life of existing nuclear facilities in France and will come under the spotlight for safety and reliability.


SEISMIC TEST TABLE Compared to Environne’Tech’s existing table, the new seismic table has up to five times the test capacity and can handle heavier test specimens and ones which occupy more volume. The new table for component qualification measures 1200 x 1200mm. The seismic table excites two axes simultaneously with a force of up to 150kN and accepts a maximum payload of 3000kg for the total spectrum and 500kg for the component spectrum. It is designed for all types of equipment which have to remain functional before


and after an earthquake. In the case of the nuclear power industry, this includes power station safety equipment, control devices, racks, sensors, connectors, lighting, taps and valves. It also serves the needs of other markets which are subject to multi-axial stresses, such as the automotive, rail and aircraft industries. The capabilities of the new table complement those of the existing one. The tables make it possible to implement complex hydraulic interdependencies (pressurising and/or fluid circulation) or electrical interdependencies (connection and monitoring of voltages, currents, temperatures, short-term power failures, etc.) and to control this by means of different sensors (acceleration, movement, stress etc.). The devices are tested under real operating conditions. As well as doubling the test capacity, the addition of a second seismic table provides Environne’Tech’s customers with more flexibility for their test campaigns. This makes the service faster, with a considerable reduction in lead times. n


20 /// Climatic & Vibration Testing 2018 Vol 1 No. 2


Climatic & Vibration Testing Vol 1 No. 2 cvt@concordepublishing.com


Editorial


Direct Line +44 (0) 20 7863 3078 Editor Jonathan Newell BSc


jon.newell@concordepublishing.com Advertising


Direct Line +44 (0) 20 7863 3077


Advertising Manager John Harvey john.harvey@concordepublishing.com


Managing Director Paul Williams


paul.williams@concordepublishing.com Concorde Publishing Ltd


100 Borough High Street, London SE1 1LB, UK Main office +44 (0) 20 7863 3079 info@concordepublishing.com


www.EnvironmentalEngineering.org.uk Climatic & Vibration Testing is produced by


Concorde Publishing Ltd in association with the Society of Environmental Engineers


The Society of Environmental Engineers 22 Greencoat Place, London SW1P 1PR membership@environmental.org.uk www.environmental.org.uk


The Society of Environmental Engineers (SEE) is a


professional Society that exists to promote awareness of the discipline of environmental engineering, and


to provide members of the Society with information, training and representation within this field.


For information about the Society or to become a member please contact us at


membership@environmental.org.uk


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© Concorde Publishing Ltd 2018 This publication is copyright under the Berne Convention and the international Copyright


Convention. Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright, Designs and Patents Act, 1988, no part may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,


electronic, electrical, chemical mechanical, photocopying, recording or otherwise, without the prior permission of the copyright owners. Unlicensed multiple copying of the contents of this publication is illegal. Inquiries should be addressed to: The Publisher, Concorde Publishing Ltd, 100 Borough High Street, London SE1 1LB, UK.


Views expressed are those of the authors and are not necessarily endorsed by the Society


of Environmental Engineers or its publishers Concorde Publishing Ltd. Data and conclusions developed are for information only and are not intended for use without independent substantiating investigation by the potential user.


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