Ultrasonic Testing for Welded Pipelines Quiz

NDT Level III personnel are responsible for developing the ultrasonic testing application technique and approving the testing procedure.

Level II or III certified personnel are authorized to calibrate ultrasonic equipment and interpret the test results.

NDT Level II or III personnel are responsible for performing the ultrasonic test and evaluating the results.

The company must demonstrate the application of the ultrasonic procedure and systems before final written approval is granted.

Changes in welding process, direction, and filler metal type require requalification of the welding operator.

Records of tests required and detailed results for each test must be maintained for qualified operators.

Radiographic testing should be performed in accordance with Section 11.1.

The flash butt-welding process should be used for automatic welding without filler metal additions.

A detailed welding procedure specification must be established and qualified before production welding is started.

Changes in wall thickness and joint design require requalification of the welding operator.

Acceptance standards for non-destructive testing (NDT) should be in accordance with Section 9.

Pulse-echo testing should be used for ultrasonic testing.

Welding operators must be qualified by producing an acceptable weld using the qualified welding procedure.

Records of tests required and detailed results for each test must be maintained for qualified operators.

The gas tungsten arc welding process should be used for automatic welding without filler metal additions.

A detailed welding procedure specification must be established and qualified before production welding is started.

The purpose of destructive testing of the weld sample is to confirm results of ultrasonic testing.

The basis for manual ultrasonic testing sensitivity is a reference standard with specific requirements for notch depth and dimensions.

Flat bottom holes machined into the pipe are used as calibration reflectors in automatic ultrasonic testing.

Planar reflectors or flat bottom holes are installed at the weld centerline position for each fill pass required by the welding procedure.

The transfer technique, using probes of the same nominal angles and frequencies, is used to determine actual full skip distance and refracted angle.

Compression wave testing of parent material is performed before ultrasonic testing on both sides of the weld.

The second backwall echo from the reference standard should be adjusted to at least 80% of full screen height in manual compression wave testing of parent material.

The purpose of the ultrasonic testing procedure for production welding is to locate imperfections and defects, and determine weld acceptability.

Results of ultrasonic testing are documented and compared with radiographs.

Destructive testing of the weld sample may be required if there are differences in detection results during ultrasonic testing.

Changes in wall thickness, bevel design, acoustic velocity, and welding process require additional demonstration welds for the ultrasonic testing procedure.

The basis for destructive testing of the weld sample is to confirm results of ultrasonic testing.