CPM TPM & Predictive Maintenance 3

Question 1

Which step of the 7-step autonomous maintenance process involves restoring equipment to its basic condition by eliminating contamination sources?

Accepted Answer

Step 1 – Initial cleaning and inspection

Answer

Step 1 of autonomous maintenance is initial cleaning, which exposes defects and establishes a baseline equipment condition.

Question 2

A plant uses ultrasonic detection on compressed air systems. What failure mode is this technique best suited to detect?

Accepted Answer

Leaks and partial discharge

Answer

Ultrasonic detectors excel at identifying the high-frequency sound generated by compressed air leaks and electrical partial discharge.

Question 3

What does the 'maintenance prevention' pillar of TPM aim to achieve during the equipment design phase?

Accepted Answer

Design equipment that requires minimal maintenance and is easy to maintain

Answer

Maintenance prevention incorporates lessons learned from existing equipment into new equipment designs to minimize future maintenance needs.

Question 4

Which failure distribution pattern is best described by the Weibull distribution when the shape parameter (β) is less than 1?

Accepted Answer

Infant mortality failures decreasing over time

Answer

A Weibull shape parameter β < 1 indicates a decreasing failure rate, characteristic of infant mortality or early-life failures.

Question 5

In a reliability-centered maintenance (RCM) analysis, what is the first question asked about each function?

Accepted Answer

What are the performance standards required?

Answer

RCM begins by defining functions and their associated performance standards before identifying failure modes and consequences.

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