Welding, Processes, Inspection, and Metallurgy: API 577: DEFINITIONS QUESTIONS WITH 100% DETAILED CORRECT ANSWERS

Alternating current field measurement (ACFM) - correct answers Electromagnetic inspection technique that can be used to detect and size surface-breaking (or in some cases near-surface) defects in both magnetic and non-magnetic materials. Actual Throat - correct answers The shortest distance between the weld root and the face of a fillet weld. Air Carbon Arc Cutting (CAC-A) - correct answers A carbon arc cutting process variation removing molten metal with a jet of air. Arc Blow - correct answers The deflection of a welding arc from its normal path because of magnetic forces. arc length - correct answers Distance from the tip of the welding electrode to the adjacent surface of the weld pool. Arc Strike - correct answers A discontinuity resulting from an arc, consisting of any localized remelted metal, heat affected metal, or change in the surface profile of any metal object. Arc Welding (AW) - correct answers A group of welding processes producing coalescence of workpieces by melting them with an arc. The processes are used with or without the application of pressure and with or without filler metal. Artifact (radiographic film artifact) - correct answers Indications on radiographic film that may be caused by damage to the film before, during or after processing. autogenous weld - correct answers A fusion weld made without filler metal. Back gouging - correct answers The removal of weld metal and base metal from the side opposite of a partially welded joint to facilitate complete joint penetration. backing - correct answers Material or device placed against the back side of the joint adjacent to the joint root, or at both sides of a joint in electroslag or electrogas wleding, to support and shield molten weld metal. The material may be partially fused or remain unfused during the welding process. base metal - correct answers Base material Substrate Parent Metal (nonstandard) Metal or alloy being welded, brazed, soldered, or cut. base metal zone (BMZ) - correct answers The portion of base metal adjacent to a weld, braze or solder joint or thermal cut and unaffected by welding, brazing, soldering, or thermal cutting Bevel angle - correct answers Is the angle between the bevel of a joint member and a plane perpendicular to the surface of the member. burn through - correct answers A hole or depression in the root bead of a single-groove weld due to excess penetration. Buttering - correct answers a surfacing variation that deposits surfacing metal on one or more surfaces to provide metallurgically compatible weld metal for the subsequent completion of the weld Cold Crack - correct answers Crack occurring in a metal at or near ambient temperatures (can occur in base metal, heat-affected, and weld metal zones.) complete fusion - correct answers fusion over the entire fusion faces and between all adjoining weld beads Constant-current Power Source (CC) - correct answers Arc Welding power source with a volt-ampere relationship yielding a small welding current change from a large arc voltage change. Constant-voltage power source (CV) - correct answers Arc welding power source with a volt-ampere relationship yielding a large welding current change from small arc voltage change. Controlled deposition welding (CDW) - correct answers half-bead technique temper bead technique welding technique used to obtain controlled grain refinement and tempering of the underlying heat-affected zone in the base metal Corrosion specialist - correct answers A person, acceptable to the owner/user, who has knowledge in corrosion damage mechanisms, metallurgy, materials selection, and corrosion monitoring techniques. Crack - correct answers Facture-type discontinuity characterized by a sharp tip and high ration of length and width to opening displacement Defect - correct answers Discontinuity or discontinuities that, by nature or accumulated effect, render a part or product unable to meet minimum applicable acceptance standards or specifications (e.g. total crack length) Direct current electrode negative (DCEN) - correct answers Straight polarity Arrangement or direct current arc welding leads in which the electrode is the negative pole and the workpiece is the positive pole of the welding arc. Direct current electrode positive (DCEP) - correct answers Reverse Polarity Arrangement of direct current arc welding leads in which the electrode is the positive pole and the workpiece is the negative pole of the welding arc. discontinuity - correct answers Interruption of the typical structure of a material, such as a lack of homogeneity in its mechanical, metallurgical, or physical characteristics distortion - correct answers Change in shape or dimensions, whether temporary or permanent, of a part as a result of heating or welding. eddy current examination technique (ET) - correct answers Inspection method that applies primarily to non-ferromagnetic materials Examiner - correct answers Person who assists the inspector by performing specific NDE on components but does not evaluate the results of those examinations in accordance with the appropriate Inspection code, unless specifically trained and authorized to do so by the owner or user. Flaw - correct answers Undesirable discontinuity Filler Metal - correct answers Metal or alloy to be added in making a brazed, soldered, or welded joint fillet weld size - correct answers For equal leg fillet welds, the leg lengths of the largest isosceles right triangle that can be inscribed within the fillet weld cross section. For unequal leg fillet welds, the leg lengths of the largest right triangle that can be inscribed within the fillet weld cross section. groove angle - correct answers Included angle between faces of a weld or groove between work pieces. Heat Affected Zone (HAZ) - correct answers The Portion of base metal whose mechanical properties or microstructure have been altered by the heat of welding, brazing, soldering, or thermal cutting Heat Input - correct answers Energy applied to the workpiece during welding Hot crack - correct answers Crack occurring in a metal during solidification or at elevated temperatures. Hot cracks can occur in both heat affected zones and weld metal zones. Image quality indicator (IQI) - correct answers Penetrameter (archaic)