Which statement about calibration checks is accurate?

Which statement about calibration checks is accurate?

• A. A calibration check should be performed before an inspection begins.
• B. Calibration checks should be performed after the inspection is completed.
• C. A calibration check should be performed before an inspection begins; after the inspection is completed, or at least every 24 hours, whichever occurs first.
• D. Calibration checks are optional.

Answer: (C)

Calibration checks ensure the instrument is giving accurate readings at all times, which is essential for reliable lead inspections. Performing a check before you begin confirms the device is in spec at the start, so you don’t base findings on drifted readings. Doing a check after you finish catches any drift that occurred during use, guarding against measurement changes during the inspection. And checking at least every 24 hours, whichever occurs first, serves as a time-based safeguard against slow drift if the instrument sits idle or the inspection window is long. Together, these steps maintain data integrity and accuracy throughout the process. Options that limit checks to only before or only after, or that call calibration optional, don’t provide the needed assurance of ongoing accuracy.

Calibration checks ensure the instrument is giving accurate readings at all times, which is essential for reliable lead inspections. Performing a check before you begin confirms the device is in spec at the start, so you don’t base findings on drifted readings. Doing a check after you finish catches any drift that occurred during use, guarding against measurement changes during the inspection. And checking at least every 24 hours, whichever occurs first, serves as a time-based safeguard against slow drift if the instrument sits idle or the inspection window is long. Together, these steps maintain data integrity and accuracy throughout the process. Options that limit checks to only before or only after, or that call calibration optional, don’t provide the needed assurance of ongoing accuracy.