Codes and Standards Flashcards

Which ASME code section specifically governs inspection of in-service pressure vessels?

Answer: API 510

API 510 is the pressure vessel inspection code governing in-service inspection, rating, repair, and alteration.

Under ASNT SNT-TC-1A, who is responsible for establishing and administering the employer's written practice?

Answer: The employer

SNT-TC-1A places ultimate responsibility on the employer to establish, document, and administer the written practice.

What does the term 'discontinuity' mean in NDT standards compared to 'defect'?

Answer: A discontinuity is any interruption in the structure; a defect is a discontinuity that exceeds acceptance criteria

A discontinuity is simply an interruption in material homogeneity; it only becomes a defect when it exceeds the acceptance criteria defined in the applicable code.

AWS D1.1 is the structural welding code for which base material?

Answer: Steel

AWS D1.1 is the Structural Welding Code—Steel, covering welding requirements for structural steel applications.

Which organization publishes the NAVSEA Technical Publication T9074-AS-GIB-010/271 used for military NDT?

Answer: U.S. Navy Naval Sea Systems Command

NAVSEA (Naval Sea Systems Command) publishes this military specification governing NDT requirements for naval shipbuilding.

In ASME Section V, Article 1, what is the primary purpose of a mandatory appendix?

Answer: To define requirements that must be followed when invoked by the referencing code

Mandatory appendices in ASME Section V contain requirements that become binding when the referencing construction code invokes them.

What is the purpose of a 'calibration block' as described in most UT standards?

Answer: To establish sensitivity, linearity, and reference responses for the testing system

Calibration blocks are used to set instrument sensitivity and establish reference echo responses before and during ultrasonic testing.