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Failure modes/effects

Failure Mode and Effects Analysis. The system design activity usually emphasizes the attainment of performance objectives in a timely and cost-efficient fashion. The failure mode and effects analysis (FMEA) procedure considers the system from a failure point of view to determine how the product might fail. The terms design failure mode and effects analysis (DFMEA) and failure mode effects and criticaUty analysis (EMECA) also are used. This EMEA technique is used to identify and eliminate potential failure modes early in the design cycle, and its success is well documented (3,4). [Pg.6]

BS 5760 1991 Part 5 - Guide to Failure Modes, Effects and Criticality Analysis (FMEA and EM EC A). Reliability of. Systems, Equipment and Components. London BSI. [Pg.383]

We previously encountered failure modes and effects (FMEA) and failure modes effects and criticality analysis (FMECA) as qualitative methods for accident analysis. These tabular methods for reliability analysis may be made quantitative by associating failure rates with the parts in a systems model to estimate the system reliability. FMEA/FMECA may be applied in design or operational phases (ANSI/IEEE Std 352-1975, MIL-STD-1543 and MIL-STD-1629A). Typical headings in the F.Mld. A identify the system and component under analysis, failure modes, the ef fect i>f failure, an estimale of how critical apart is, the estimated probability of the failure, mitigaturs and IHissihiy die support systems. The style and contents of a FMEA are flexible and depend upon the. ilitcLiives of the analyst. [Pg.99]

FMECA - Failure Modes, Effects and Criticality Analysis. [Pg.461]

Table 15.3.4-1 Failure Modes Effects Analysis for Valve A in Figure 3.4.4-6... Table 15.3.4-1 Failure Modes Effects Analysis for Valve A in Figure 3.4.4-6...
I Failure Modes Effects and Criticality Analysis Applied to System B of... [Pg.536]

One of the procedures used to determine which sensors are needed to sense process conditions and protect the process is called a Failure Mode Effect Analysis—FMEA. Every device in the process is checked for its various modes of failure. A search is then made to assure that there is a redundancy that keeps an identified source or condition from developing for each potential failure mode. The degree of required redundancy depends on the severity of the source as previously described. Table 14-2 lists failure modes for various devices commonly used in production facilities. [Pg.396]

Failure modes effects criticality analysis (FMECA)... [Pg.439]

Perhaps the key to detcrnuiiiiig die consequences of an accident is die study of accident mininiization/prcvendon. This topic receives extensive treatment in Section 17.2. The estimation (not calculadon) of consequences is treated in Section 17.3, which is followed by evacuation procedures (Section 17.4). The next section e.xaniiiies failure modes, effects and critical analysis (FMECA). The cluipter concludes with vulnerability analysis (Section 17.6) and event tree analysis (Section 17.7). [Pg.484]

The first step in FMECA is to determine a level of resolution. If a system-level liazard is to be addressed, equipment in die system must be studied for a plant-level hazard, individual systems within die plant must be examined. Once the level of resolution luis been determined, a format must be developed-one to be used consistendy tlu oughout die study. A minimal format should include each item, its description, failure modes, effects, and criticality ranking. [Pg.499]

Failure Modes, Effects and Criticality Evaluation (FMECA) is a systematic qualitative metliod by which equipment and system failures and tlie resulting effects of these failures are detennined. FMECA studies possible events, but not tlie reasons for tlieir occurrences. [Pg.511]

List tlie key features (positive or negative) of Failure Modes, Effects, and Critical Analysis. [Pg.511]

Failure mode, effects, and criticality analysis (FMECA) This method tabulates a list of equipment in the process along with all the possible failure modes for each item. The effect of a particular failure is considered with respect to the process. [Pg.460]

Failure Mode Effect (and Criticality) Analysis [FME(C)A] a technique in which all known failure modes of components or features of a system are considered in turn and undesired outcomes are noted a criticality ranking of equipment may also be estimated. [Pg.229]

Qualification of a capillary electrophoresis instrument is performed using failure mode, effects, and criticality analysis as the risk analysis tool. The instrument is broken down into its component modules and the potential failures of those components identified. The potential effect of those failures is defined and the risk characterized. Any current evaluation of those failures is identified and any recommended actions to mitigate the risk defined. [Pg.171]

From those techniques given in Table 1 my personal preference is for failure mode, effects, and criticality analysis (FMECA). This technique can be applied to both equipment and facilities and can be used to methodically break down the analysis of a complex process into a series of manageable steps. It is a powerful tool for summarizing the important modes of failure, the factors that may cause these failures, and their likely effects. It also incorporates the degree of severity of the consequences, their respective probabilities of occurrence, and their detectability. It must be stressed, however, that the outcome of the risk assessment process should be independent of the tool used and must be able to address all of the risks associated with the instrument that is being assessed. [Pg.172]


See other pages where Failure modes/effects is mentioned: [Pg.84]    [Pg.2286]    [Pg.99]    [Pg.499]    [Pg.396]    [Pg.146]    [Pg.499]    [Pg.184]    [Pg.25]    [Pg.72]    [Pg.345]    [Pg.510]    [Pg.512]    [Pg.222]    [Pg.334]    [Pg.710]    [Pg.105]    [Pg.499]   


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