| PWHT |
Post weld heat treatment, Heat treatment after welding |
| HAZ |
Heat affected zone, the area that was changed but not through melting. |
| GMAW |
Gas Metal arc welding |
| MMAW |
Manual Metal arc welding (stick electrodes) |
| FCAW |
Flux cored arc welding |
| SAW |
Submerged Arc welding |
| GTAW |
Gas Tungsten arc welding |
| ITP |
Inspection & Test Plan, a plan listing the events, during fabrication, some of which will be 'Hold points' points when fabrication stops while inspections are made to ensure it complies. |
| QA |
Quality Assurance (the plan) |
| QC |
Quality Control (quality measured) |
| PQR |
Procedure Qualification Record, (actual values used in the test weld) |
| WPS |
Weld Procedure Specification (range of values based on PQR) |
| WQ |
Welder Qualification (a form which describes the limitations of the welder based on the weld test he made) |
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