CRPE Engineer Registration study plan

Define reliability, maintainability, and availability in your own words and write one engineering example of each from a product you have worked on

Compute MTBF, MTTF, MTTR, and steady-state availability from a made-up failure and repair log with at least 10 events

Distinguish inherent, achieved, and operational reliability, and list two factors that degrade each one

Sketch the bathtub curve and annotate infant mortality, useful life, and wear-out with the failure mechanisms typical of each region

Classify at least 20 practice scenarios as exponential, Weibull, normal, or lognormal based on the physics described

Compute reliability at a given time for exponential and two-parameter Weibull models by hand and verify with a spreadsheet

Explain the role of the shape parameter beta and interpret beta below 1, near 1, and above 1

Convert between failure rate, reliability, and probability density for the exponential case without looking at notes

Solve for system reliability of series, parallel, and k-out-of-n configurations using both the probability and the binomial approaches

Apply Bayes' theorem to a fault-isolation or screening problem and state the prior, likelihood, and posterior explicitly

Set up and interpret a confidence interval for a failure rate from a time-terminated test

Identify which probability distribution fits a described test situation and justify the choice in one sentence

Derate a component list against a supplier datasheet and flag every part exceeding 50 percent of a rated stress

Write a reliability test plan for one assembly that states the environment, duration, sample size, and accept/reject criteria

Distinguish reliability demonstration testing from reliability growth testing and state when each is appropriate

Compute the sample size or test time needed for a given demonstrated MTBF at a stated confidence level

Build a full FMECA worksheet for a subsystem with at least 15 line items, covering function, failure mode, effect, severity, occurrence, and detection

Assign severity, occurrence, and detection ratings using a documented scale and compute the risk priority number for each line

Identify the three highest-risk items and write a specific design or test action for each

Explain the difference between failure modes, failure causes, and failure effects using your own worksheet entries

Construct a fault tree for a top event with at least three levels, including AND and OR gates and one repeated basic event

Convert that fault tree into an equivalent reliability block diagram and explain any structural difference between the two

Compute steady-state availability for a repairable system with redundant paths and state the assumptions behind the result

Identify the minimal cut sets of your fault tree and rank them by contribution to the top-event probability

Plot a dataset on a Weibull probability plot, estimate shape and scale parameters, and state whether the data show growth, degradation, or neither

Apply the Duane or Crow-AMSAA model to a growth dataset and compute the instantaneous and cumulative failure intensities

Perform a hazard analysis for one operational scenario and classify each hazard by severity and probability

Describe how human error rates are estimated and name two design changes that reduce human error in maintenance

Draft a reliability program plan outline that maps activities to program phases and names the responsible function for each

Re-derive the five formulas you missed most often during weeks 1 through 7 without notes

Complete a timed 60-question mixed-domain practice set and record your score by domain

Write a one-page summary of your three weakest domains and the specific actions you will take before exam day