Interim Guidelines:

Evaluation, Repair, Modification and

Design of Steel Moment Frames Chapter 11 - Nondestructive Testing

11-1

Nondestructive testing includes magnetic particle testing (MT), Liquid Dye Penetrant testing

(PT), Radiographic Testing (RT) and Ultrasonic Testing (UT). The purpose of nondestructive

testing is to serve as a backup to Visual Inspection and to detect flaws and defects that are not

visible. Nondestructive examination is not a replacement for an adequate program of Visual

Inspection, and should not be used as such.

Nondestructive testing personnel shall be qualified under The American Society for

Nondestructive Testing, Inc., Recommended Practice No. SNT-TC-1A, in one of the three

following levels:

specific calibrations, specific NDT, and specific evaluations for acceptance or rejection

determinations according to written instructions and to record results. The NDT Level

I should receive the necessary instruction or supervision from a certified NDT Level III

individual or designee.

equipment and to interpret and evaluate results with respect to applicable codes,

standards and specifications. The NDT Level II should be thoroughly familiar with the

scope and limitations of the methods for which he/she is qualified and should exercise

assigned responsibility for on-the-job training and guidance of trainees and NDT Level

I personnel. The NDT Level II should be able to organize and report the results of

NDT.

techniques and procedures; interpreting codes, standards, specifications and

procedures; and designating the particular NDT methods, techniques, and procedures

to be used. The NDT Level III should be responsible for the NDT operations for

which he/she is qualified and assigned and should be capable of interpreting and

evaluating results in terms of existing codes, standards, and specifications. The NDT

Level III should have sufficient practical background in applicable materials,

fabrication, and product technology to establish techniques and to assist in establishing

acceptance criteria when none are otherwise available. The NDT Level III should have

general familiarity with other appropriate NDT methods, as demonstrated by the

ASNT Level III Basic examination or other means. The NDT Level III, in the

methods in which certified, should be capable of training and examining NDT Level I

and II personnel for certification in those methods.