In November 2011 a 5 month old baby sadly got killed in a Dutch indoor swimming pool because 2 speakers and a speaker frame landed on her head. The speakers fell from 5 meters height after a stainless steel bolt was broken due to environmental cracking. Worldwide there have been many incidents, and several accidents, with cracking stainless steels in the swimming pool atmosphere. In 1985 in Switzerland 12 people got killed by a cracked stainless steel elements that caused the collapse of a swimming pool roof.

This paper will describe how this accident could happen and what has been done in the Netherlands since 2001, when the entire ceiling and air channels came down in another swimming pool (luckily this occurred during closing time). Further a new document MIS1203-2012 will be discussed: "Materials Selection and Inspection of Fasteners and other Loaded Elements in the Indoor Swimming Pool Atmosphere".

Subject
Zinc rich coatings, Materials, Ceilings, Atmosphere, Materials selection, Inspection, Mechanical failure, Steel, Carbon steel, Zinc, Stainless steel, Fasteners, Elements
Keywords:
environmental cracking, stress corrosion cracking, chloroform, hypochlorite, swimming pool atmosphere, stainless steel, galvanized steel, zinc flake coating, duplex coating, DIN 18168-1
© 2013 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2013
Association for Materials Protection and Performance (AMPP)
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