CRL CRL - Certified Reliability Leader Performance Metrics and KPIs Questions and Answers 2 — Questions and Answers
Question 1: What does a low OEE score primarily indicate about a manufacturing process?
- Significant losses in availability, performance, or quality (Correct answer)
- High reliability of equipment
- Excellent maintenance practices
- Low spare parts inventory
Correct answer: Significant losses in availability, performance, or quality
A low OEE score signals that the process is experiencing significant losses in at least one of the three OEE components: availability, performance, or quality.
Question 2: Which reliability metric measures the percentage of time equipment is operational when needed?
- Availability (Correct answer)
- Reliability
- Maintainability
- Utilization
Correct answer: Availability
Availability measures the proportion of time a system is in a functioning condition and ready for use when required.
Question 3: What is the failure rate (λ) if MTBF = 500 hours?
- 0.002 failures/hour (Correct answer)
- 0.02 failures/hour
- 0.2 failures/hour
- 500 failures/hour
Correct answer: 0.002 failures/hour
Failure rate λ = 1 ÷ MTBF = 1 ÷ 500 = 0.002 failures per hour.
Question 4: A world-class OEE benchmark in manufacturing is typically:
- 85% or higher (Correct answer)
- 75% or higher
- 65% or higher
- 95% or higher
Correct answer: 85% or higher
World-class OEE is generally considered to be 85% or higher in manufacturing environments.
Question 5: Which of the following is a leading indicator in reliability performance management?
- Percentage of PM tasks completed on schedule (Correct answer)
- Number of failures last month
- Total maintenance costs last year
- MTBF over the past quarter
Correct answer: Percentage of PM tasks completed on schedule
PM completion rate is a leading indicator because it measures proactive actions taken before failures occur, not results after the fact.
Question 6: In reliability-centered maintenance, what does a 'bad actor' asset typically refer to?
- Equipment with the highest frequency of failures or maintenance costs (Correct answer)
- Equipment that is the oldest in the facility
- Equipment operated beyond its rated capacity
- Equipment without a documented maintenance plan
Correct answer: Equipment with the highest frequency of failures or maintenance costs
A 'bad actor' is an asset that disproportionately contributes to downtime, failures, or maintenance costs and warrants prioritized attention.
CRL CRL - Certified Reliability Leader Performance Metrics and KPIs Questions and Answers 2
What does a low OEE score primarily indicate about a manufacturing process?