The Impact of Aging on the Response Threshold Value of Smoke Alarms in Office Environments
The German standard DIN 14675 Fire-alarm systems-installation and operation prescribes a replacement cycle for smoke alarms of 5 resp.8 years, depending on the detector technology O if the functional capability of the smoke alarm has been proved but an on-the-spot verification of the response behavior is not possible.The fact that a smoke alarm has a finite life-time is undisputable, but the question arises, why the value is 5 or 8 years and if these values are still up-to-date with modern detector technologies.Aim of the presented study was the analysis and documentation of the influence of the environment and the operating life ~ on the response behavior.For this reason the response behavior of different old and new optical point-type smoke detectors were tested in the EN54 test tunnel.A particular focus of this series of tests was to investigate the behavior of new detectors by comparison with detectors of different age groups.The old detectors were collected exclusively from office buildings and were divided into 4 age groups (2-5 years, 6-8 years, 9-12 years, and older than 12 years).The research study showed that the age limit of 8 years (DIN 14675) is not an insurmountable barrier.In this context, it should be stressed that the study covers only a very small sample and should not be valued as absolute proof.In fact, the performed investigations show first important details for a possible review of the defined age limit.A scientifically sound statement requires a significandy larger number of smoke alarms from different manufacturers and different areas of application.
fire detection smoke alarms maintenance response behavior pollution of smoke alarms
Wolfgang KR(U)LL Lea MARCIUS Thorsten SCHULTZE Ingolf WILLMS
University of Duisburg-Essen, Department of Communication Systems, 47057 Duisburg, Germany
国际会议
The 2016 International Symposium on Safety Science and Technology(2016安全科学与技术国际会议)
昆明
英文
203-207
2016-10-17（万方平台首次上网日期，不代表论文的发表时间）