A Certified Process
Technician, CPT, is reviewing the “Run Charts” for two machine systems, System
#425 and System # 638, to assess their performance and determine if either, or
both systems’ preventive maintenance schedules should be interrupted with an
unscheduled maintenance check. Among other tasks, each system is milling shear
pins to a specified radius for use in the propeller subsystems of a marine
engine the company makes. To accomplish this system assessment task, the Tech
routinely randomly selects pins to measure and record their radius. Because of the
knowledge and skills expected of a CPT, the technician understands the
implications presented in such Run Chart data.
The plots below summarize
system performance by presenting daily average radius measurements performed by
the Tech. After studying this information the Tech has made a decision.
1) The technician decided that
both systems are operating as expected. Yes
or NO. Submit your answers below the blog post, or on www.fl-ate.org.
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