Practice Test GeeksPractice Test Geeks

CRE Cheat Sheet 2026

The 30 highest-yield CRE facts, distilled from real exam questions. Print it, save it as a PDF, or study it here โ€” free, no sign-up.

165 questions
258 min time limit
73.00% to pass
  1. When using an ultrasonic thickness gauge, the measured value is lower than the nominal wall thickness. What is the MOST likely cause? โ†’ Internal corrosion or erosion reducing wall thickness
  2. What is the primary purpose of derating in Design for Reliability? โ†’ To operate components below their maximum rated stress levels to extend life
  3. Which of the following best describes the 'bathtub curve' in reliability engineering? โ†’ A plot of failure rate over time showing early failures, constant rate, and wear-out
  4. A Hazard and Operability Study (HAZOP) uses 'guide words' to systematically identify deviations. Which of the following is a standard HAZOP guide word? โ†’ MORE OF
  5. The 8D (Eight Disciplines) problem-solving process begins with which discipline? โ†’ Forming a cross-functional team
  6. Which document formally authorizes a reliability improvement project and identifies the project manager? โ†’ Project charter
  7. In the context of the OSHA hierarchy of controls, substitution refers to: โ†’ Replacing a hazardous material or process with a less hazardous one
  8. A reliability engineer is tasked with reducing a facility's Scope 2 greenhouse gas emissions. Which action directly addresses Scope 2 emissions? โ†’ Purchasing renewable energy certificates for purchased electricity
  9. Which type of environmental permit requires facilities to report their total releases of listed toxic chemicals annually to the EPA? โ†’ Toxics Release Inventory (TRI) reporting requirement
  10. In project resource management, what is resource leveling? โ†’ Adjusting the schedule to resolve resource over-allocation or conflicts
  11. When performing a reliability apportionment for a series system, what is the primary goal? โ†’ Allocate a system reliability requirement among subsystems or components
  12. What does ANSI/ASQ Z1.4 govern? โ†’ Sampling procedures and tables for inspection by attributes
  13. The cumulative distribution function (CDF) of the Weibull distribution F(t) equals 0.632 when t equals: โ†’ The characteristic life ฮท (eta)
  14. What is the primary purpose of thorough documentation in professional practice? โ†’ To create an accurate record for continuity of care and legal protection
  15. In the context of the exponential distribution, what is the relationship between the failure rate ฮป and the MTTF? โ†’ MTTF = 1/ฮป
  16. During failure investigation, a 'witness mark' on a bearing component most likely indicates: โ†’ Contact or impact with another component during operation
  17. Which technique is used to quantitatively assess how much each factor and interaction contributes to variation in a DOE? โ†’ Analysis of Variance (ANOVA)
  18. In a risk matrix, a hazard rated 'Catastrophic' severity and 'Remote' probability is typically classified as: โ†’ Medium risk requiring ALARP review
  19. In event tree analysis (ETA), branch probabilities for each node must: โ†’ Sum to 1.0 across all branches at each node
  20. Galvanic corrosion between dissimilar metals is most accelerated when: โ†’ The anode area is small relative to the cathode area
  21. Under OSHA's Process Safety Management (PSM) standard, which element requires facilities to analyze hazards of processes involving highly hazardous chemicals? โ†’ Process hazard analysis (PHA)
  22. An oil sample shows a ferrous particle count spike with large, chunky particles (>40 ยตm) on a ferrograph. This pattern is associated with: โ†’ Severe sliding or fatigue wear indicating imminent failure
  23. Six Sigma's DMAIC improvement roadmap stands for: โ†’ Define, Measure, Analyze, Improve, Control
  24. Which quality control concept states that 80% of defects typically come from 20% of causes? โ†’ Pareto Principle
  25. When multiple competing failure modes are present, removing one failure mode from analysis will: โ†’ Increase the estimated reliability of the product
  26. In life data analysis, 'Type I censoring' means the test is terminated: โ†’ After a fixed time period regardless of failures
  27. Which MIL-STD standard governs reliability testing for electronic and electrical components used in military applications? โ†’ MIL-STD-883
  28. Which condition-monitoring technique is best suited for detecting rolling element bearing defects at an early stage? โ†’ Vibration analysis using high-frequency techniques
  29. In Bow-Tie analysis, the 'top event' represents: โ†’ The hazardous event at the center connecting threats and consequences
  30. What is Average Outgoing Quality Limit (AOQL) in acceptance sampling? โ†’ The maximum average defective rate in accepted lots after inspection and replacement
Turn these facts into recall:
๐Ÿƒ CRE Flashcards๐Ÿ“š Full Study Guide