AWS ASME IX Endorsement flashcards
AWS ASME IX Endorsement · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- ASME Section IX scope
- Section IX is a reference standard that sets requirements for qualification of welding, brazing, and fusing procedures and of welders, brazers, and operators; it does not cover design or fitness-for-service.
- Essential variable definition
- A variable that, if changed beyond the qualified range, requires a new procedure qualification record and WPS because it affects mechanical properties or joint soundness.
- Supplementary essential variable
- A variable that becomes essential only when the referencing Code requires notch toughness testing; changing it then requires requalification, and otherwise the variable is not applied.
- Nonessential variable change
- A change in a nonessential variable does not require requalification; the WPS is amended to reflect the change and the existing PQR continues to support the procedure.
- WPS definition
- Welding Procedure Specification: a written, qualified document giving the ranges of variables (joint design, base and filler metals, position, preheat, electrical characteristics) that a welder follows for production welds.
- PQR definition
- Procedure Qualification Record: the certified record of actual variables used and test results obtained when qualifying a WPS; it supports the WPS and documents the ranges qualified.
- Qualification responsibility
- The Manufacturer or Contractor is responsible for preparing, qualifying, certifying, and maintaining WPSs, PQRs, and performance qualifications; the Authorized Inspector may review these records.
- Welder versus welding operator
- A welder manipulates the electrode or torch manually; a welding operator controls machine, automatic, or semiautomatic equipment. Section IX requires separate qualification for each.
- Non-retroactive code revisions
- Revisions to Section IX are generally not retroactive: qualifications made to an earlier edition remain valid unless the referencing Code or the edition requires requalification.
- Units in Section IX
- Section IX lists US Customary and SI values; each system must be used independently, without mixing, because the listed values are not exact equivalents.
- Qualification records retention
- The Manufacturer or Contractor must retain WPSs, PQRs, and performance qualification records and make them available for review, including to the Authorized Inspector.
- Groove versus fillet qualification
- Procedures qualified with a groove weld also qualify fillet welds within the qualified thickness range; a fillet-weld-only qualification covers fillet welds only and never groove welds.
- P-Number grouping
- Base metals are grouped into P-Numbers, with Group Numbers within some P-Numbers, by composition and weldability per QW-420; a change of P-Number is an essential variable.
- F-Number grouping
- Filler metals are grouped into F-Numbers for qualification purposes; the F-Number reflects usability and composition characteristics rather than the exact AWS classification designation.
- A-Number purpose
- The A-Number classifies ferrous filler metals by chemical composition and acts as a supplementary essential variable for procedure qualification where notch toughness is required.
- QW-451 thickness ranges
- QW-451 tables convert procedure test coupon thickness into qualified base metal and deposited weld metal ranges; a thicker coupon qualifies a wider range of production thickness.
- Welder unlimited thickness rule
- For groove-weld performance qualification, a coupon at least 1/2 in. (13 mm) thick qualifies the welder for unlimited base metal and deposited weld metal thickness.
- Pipe qualifies plate
- A welder qualified on pipe with a groove test is also qualified to weld plate; a welder qualified only on plate is not qualified for pipe.
- Six-month continuity rule
- A welder's or welding operator's performance qualification expires when the individual has not used that process for six months or more; requalification by test is then required.
- Plate test positions
- Plate groove tests use positions 1G flat, 2G horizontal, 3G vertical, and 4G overhead per QW-461; the qualified positions are limited to those represented by the test.
- Impact testing triggers supplements
- When the referencing Code requires notch toughness testing, supplementary essential variables become essential and the qualification coupon must be impact tested as part of procedure qualification.
- WPS deviation rule
- Production welding must follow the qualified WPS; exceeding its ranges requires a revised WPS and, where an essential variable changes, a new procedure qualification.
- Multiple processes on one coupon
- When one test coupon is welded with two or more processes, each process is qualified only for the thickness deposited with that process under the QW-451 rules.
- Employer-specific welder qualification
- Performance qualification is granted by and valid for the employer; a welder qualified by one manufacturer must be requalified by a different manufacturer before welding its work.
- BPS and PQR
- Brazing procedure qualification produces a brazing procedure specification (BPS) supported by a PQR that records the actual brazing variables used and the test results obtained.
- Brazing essential variables
- Essential brazing variables include the brazing process, base metal group, filler metal group, flux or atmosphere, joint clearance, brazing temperature, time at temperature, and post-braze heat treatment.
- Brazer performance qualification
- Brazers and brazing operators qualify by brazing a test coupon that is visually examined and then sectioned to verify filler metal distribution, penetration, and freedom from voids.
- Brazing filler metal grouping
- Brazing filler metals are grouped by composition in Part QB; changing to a filler metal of a different group is an essential variable requiring procedure requalification.
- Brazing joint clearance
- Joint clearance is an essential brazing variable because capillary flow and joint strength depend on it; the qualified clearance range must be recorded and followed.
- Brazer six-month continuity
- Brazing performance qualification expires if the brazer or brazing operator has not used the process for six months; requalification by test is then necessary.
- Post-braze heat treatment
- Post-braze heat treatment and the flux or protective atmosphere are essential brazing variables; a change in either requires requalification of the brazing procedure.
- Brazing separate from welding
- Part QB brazing qualifications are separate from Part QW welding qualifications; a welding WPS, PQR, or welder qualification cannot be used to justify any brazing operation.