Dangerous failures in multifunctional systems
نویسندگان
چکیده
منابع مشابه
Proof testing of safety-instrumented systems: New testing strategy induced by dangerous detected failures
Some dangerous failures of safety-instrumented systems (SISs) are detected almost immediately by diagnostic self-testing, whereas other dangerous failures can only be detected by proof-testing. The first type is called dangerous detected (DD) failures and the second type is called dangerous undetected (DU) failures. Proof tests are usually carried out at constant time intervals. DD-failures are...
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Proof testings are regularly conducted on safety instrumented systems (SISs) to reveal dangerous undetected (DU) failures so as to reduce process risks. Sometimes, self-diagnostic tests of SISs can find dangerous detected (DD) failures which will be fixed as soon as possible. If such detections of failures also activate further tests for all components in the SIS in order to discover hidden fai...
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Some dangerous failures of safety-instrumented systems (SISs) are detected almost immediately by diagnostic self-testing as dangerous detected (DD) failures, whereas other dangerous failures can only be detected by proof-testing, and are therefore called dangerous undetected (DU) failures. Some items may have a DUand a DD-failure at the same time. After the repair of a DD-failure is completed, ...
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Systems failures cause havoc everywhere. Failures may be total, partial or temporary; and examination of the subject has to consider: implemented systems, systems being enhanced and totally new projects. When failing situations arise, the aftermath is highly complicated because there are so many possible contributing factors. For many years, students of Computer Science and Software Engineering...
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The increasing role of such systems in safety-critical applications establishes the need for methods to analyse and justify their safety. However, the essential characteristics of SoS present serious difficulties for traditional hazard analysis techniques. Operational independence, heterogenous composition, emergent behaviour and the desire for dynamic reconfiguration make conventional hazard a...
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ژورنال
عنوان ژورنال: IOP Conference Series: Materials Science and Engineering
سال: 2015
ISSN: 1757-8981,1757-899X
DOI: 10.1088/1757-899x/94/1/012019