CMRP Equipment Reliability Improvement 2 — Questions and Answers
Question 1: What is the primary goal of vibration analysis in equipment reliability?
- To measure equipment weight
- To detect developing mechanical faults before they cause failure (Correct answer)
- To determine equipment age
- To calculate energy consumption
Correct answer: To detect developing mechanical faults before they cause failure
Vibration analysis detects changes in vibration patterns indicating developing faults such as imbalance, misalignment, and bearing wear.
Accelerometers measure vibration amplitude and frequency compared against baselines. Specific fault conditions produce characteristic signatures: imbalance at 1x running speed, misalignment at 2x speed, bearing defects at specific bearing frequencies.
Question 2: Which analysis technique uses infrared cameras to detect equipment thermal anomalies?
- Ultrasonic testing
- Thermography (Correct answer)
- Eddy current testing
- Radiography
Correct answer: Thermography
Infrared thermography uses thermal imaging cameras to visualize temperature differences indicating problems like overheating connections.
Thermography is used for electrical inspections, mechanical equipment monitoring, refractory and insulation integrity, and steam system surveys. The technique is non-contact and non-intrusive, allowing inspections during normal operation.
Question 3: What does oil analysis primarily reveal about rotating equipment health?
- Equipment color and appearance
- Wear particle concentration, contamination levels, and lubricant condition (Correct answer)
- Equipment installation date
- Operator training status
Correct answer: Wear particle concentration, contamination levels, and lubricant condition
Oil analysis examines lubricant samples for wear metals, contamination, and oil degradation to assess both equipment condition and lubricant health.
Oil analysis encompasses fluid properties (viscosity, acidity), contamination (water, dirt), and wear debris analysis. Iron particles may indicate gear or bearing wear; copper may indicate bushing wear; silicon indicates dirt ingression.
Question 4: What is the purpose of precision alignment during equipment installation?
- To improve equipment appearance
- To minimize vibration, reduce bearing loads, and extend component life (Correct answer)
- To increase equipment speed
- To reduce equipment cost
Correct answer: To minimize vibration, reduce bearing loads, and extend component life
Precision alignment minimizes forces on bearings, seals, and couplings, significantly extending their service life.
Misalignment is responsible for up to 50% of rotating machinery breakdowns. Precision alignment using laser tools can achieve tolerances of 0.001 inches, yielding 2-8x longer bearing life and 5-10x longer seal life.
Question 5: Which reliability improvement technique involves systematically eliminating chronic equipment problems?
- Run-to-failure maintenance
- Defect elimination (Correct answer)
- Emergency maintenance
- Breakdown maintenance
Correct answer: Defect elimination
Defect elimination systematically identifies and removes root causes of recurring equipment failures.
Defect elimination programs target chronic problems using Pareto analysis of work order data, root cause analysis, and permanent corrective actions. Successful programs can reduce reactive maintenance by 30-50%.
Question 6: What is the function of a lubrication management program in equipment reliability?
- To track lubricant purchase orders only
- To ensure the right lubricant is applied in the right amount at the right time (Correct answer)
- To clean equipment surfaces
- To measure equipment dimensions
Correct answer: To ensure the right lubricant is applied in the right amount at the right time
A lubrication management program ensures proper lubrication practices to minimize friction, wear, and heat.
Lubrication-related issues cause an estimated 40-50% of all bearing failures. A comprehensive program includes lubricant selection, contamination control, application methods, condition monitoring through oil analysis, and technician training.
CMRP Equipment Reliability Improvement 2
What is the primary goal of vibration analysis in equipment reliability?