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Fire doors/glazing


a major failure of internal fire and smoke compartmentation – in that the central stairwell became full of smoke at a relatively early stage, which seems to have been a major contributor to the loss of life. It would therefore seem probable that


failures of self closing fire and smoke doors will be found to have played a part in this. The role of the door closer in ensuring that fire and smoke resisting doors are closed properly is a critical one. Door closers can fail for a number of reasons, including issues relating to product testing and certification (including CE marking); failures resulting from a lack of available information for merchants, installers and end users; and problems in relation to installation, commissioning and maintenance, which can all play their part. This is an ongoing point of concern and an issue that has frequently arisen in recent DHF meetings. It is too often the case that door closers are incorrectly specified or badly installed, with the result that the door may not operate correctly. Lack of maintenance often exacerbates the problem. It’s a challenge that urgently needs addressing. What is required is greater understanding


industry wide about what a correctly specified, installed and maintained fire door closer must be able to do, ie close the fire door from any angle and against


the resistance of any latches or seals in the event of fire; ensure that the closing is controlled in accordance with the requirements of the relevant standards, including EN 1154, EN 1155, EN 1158, EN 1634 and, if applicable, BS 8300; and maintain the integrity of the system, in that the closer must not itself present any additional fire hazard or impair the integrity of the door or frame.


Complexities of product


DHF holds the view that as an industry, we’re ‘getting it wrong’, by choosing the wrong product because of a lack of understanding; choosing the right product but experiencing problems when this gets changed owing to, for example, costs; or choosing the right product, but then having it incorrectly installed and maintained. Door closers are one of the most complex


architectural ironmongery products, as well as – from a fire compartmentation perspective – one of the most important, so it is clear that greater clarity would help to resolve any potential issues. In addition, information surrounding testing


and certification is not always straightforward, with the European product standard for controlled door closing devices classifying the products in ways that are not always helpful to the specifier or user. Questions can arise over


FOCUS


www.frmjournal.com MAY 2018


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