Using ER-plus^TM CORE develops the MEL, justifing criticality, mapping risk using symmetry, and assigning normal models. As references, normal models point other equipment tags and generate application PM tables. Using ER-plus^TM, RCMtrim^TM creates files that load CMMS/EAMS PM table work orders.

Every plant component in the MEL poses some failure risk. Equipment trains split production flows, providing standby backups, channel redundancy, or other benefits. Instrumentation warns of hidden failures. However, mitigation strategies also complicate designs.

CORE MEL equipment partition assigns risk and templates using owner-specified criteria. System train or skid symmetries, redundant channels, and random failures that place unit operations directly at risk influence operator condition monitoring and PM task selection.

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