Calibration Block (Reference Standard)

A specially fabricated test block containing calibrated defects (notches, drilled holes, side-drilled holes) used to calibrate ultrasonic equipment and verify system performance before inspections. Standard calibration blocks like IIW (flat-bottomed hole, side-drilled hole) enable equipment setup and gain establishment. Use of proper calibration blocks ensures consistent, repeatable measurements and reliable flaw detection across multiple inspections and operators.

Equipment Selection and Use

Proper selection and maintenance of calibration block (reference standard) is critical for successful NDT inspections. Equipment must be calibrated and verified per applicable standards.

Maintenance and Verification

Regular maintenance and calibration verification ensure reliable equipment performance. Equipment that falls out of calibration can produce unreliable results.

Best Practices

• Always follow applicable NDT standards and procedures
• Use properly calibrated and maintained equipment
• Ensure personnel are properly trained and certified
• Document inspection procedures and results completely
• Keep current with industry standards and best practices