ASQ ASQ Certified Calibration Technician (CCT) 2 — Questions and Answers
Question 1: The purpose of a calibration certificate is to:
- Certify that the instrument has been repaired
- Document the calibration results, including as-found and as-left conditions, and confirm traceability (Correct answer)
- Authorize the instrument for use in production
- Record the instrument's purchase date and cost
Correct answer: Document the calibration results, including as-found and as-left conditions, and confirm traceability
A calibration certificate documents the measurement results, traceability chain, environmental conditions, and as-found/as-left status of the calibrated instrument.
Question 2: When a measurement instrument is found 'out of tolerance' during calibration, the first required action is:
- Immediately destroy and replace the instrument
- Assess the impact on previous measurements made with the instrument since its last in-tolerance calibration (Correct answer)
- Increase the calibration interval for that instrument
- Notify all customers of every product measured with that instrument
Correct answer: Assess the impact on previous measurements made with the instrument since its last in-tolerance calibration
When an instrument is found out of tolerance, an impact assessment must determine whether measurements made since the last valid calibration are suspect.
Question 3: What does 'NIST traceability' mean for a calibration laboratory in the United States?
- The lab is certified by NIST directly
- Calibration standards used by the lab can be traced through an unbroken chain of comparisons to NIST reference standards (Correct answer)
- All calibrations are performed at NIST facilities
- The lab uses only NIST-manufactured instruments
Correct answer: Calibration standards used by the lab can be traced through an unbroken chain of comparisons to NIST reference standards
NIST traceability means the lab's reference standards are calibrated by an unbroken chain of comparisons ultimately linking to the National Institute of Standards and Technology's primary reference standards.
Question 4: A Gauge Repeatability and Reproducibility (GR&R) study evaluates:
- The accuracy of the gauge against a reference standard
- The amount of variation in measurements caused by the measurement system itself — the gauge and the operators (Correct answer)
- The calibration interval needed for a specific gauge
- The number of gauges needed in a production facility
Correct answer: The amount of variation in measurements caused by the measurement system itself — the gauge and the operators
A GR&R study separates total measurement variation into components: repeatability (gauge variation) and reproducibility (operator-to-operator variation).
Question 5: 'Resolution' of a measuring instrument refers to:
- How accurately it measures compared to a standard
- The smallest increment that can be detected or displayed by the instrument (Correct answer)
- The maximum load the instrument can measure
- The time required to take a single measurement
Correct answer: The smallest increment that can be detected or displayed by the instrument
Resolution is the smallest difference in quantity that an instrument can detect and display, setting the limit for measurement discrimination.
Question 6: A 'reference standard' in a calibration hierarchy is:
- Any instrument used daily in production
- A measurement standard maintained primarily to calibrate working standards, kept with high accuracy under controlled conditions (Correct answer)
- The specification document for an instrument
- A standard weight used only in laboratories outside the U.S.
Correct answer: A measurement standard maintained primarily to calibrate working standards, kept with high accuracy under controlled conditions
A reference standard is maintained primarily to calibrate other standards (working standards) and is kept under controlled conditions to preserve its accuracy.
ASQ ASQ Certified Calibration Technician (CCT) 2
The purpose of a calibration certificate is to: