MIL-STD-2219A
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3. DEFINITIONS
3.1 Acronyms
The acronyms and letter designations used in this standard are defined as follows:
AFPRO - Air Force Plant Representative
DCAS - Defense Contract Administration Service
FCAW - Fluxcored Arc Welding GMAW - Gas Metal Arc Welding GTAW - Gas Tungsten Arc Welding HAZ - Heat-affected-zone NAVPRO - Navy Plant Representative NDE - Nondestructive Examination OFW - Oxyfuel Welding
PAW - Plasma Arc Welding
PQR - Procedure Qualification Record
SAW - Submerged Arc Welding
SMAW - Shielded Metal Arc Welding
WPS - Welding Procedure Specification
3.2 General definitions
Unless otherwise defined herein, welding terms, definitions and symbols will conform to
AWS A2.4 and AWS A3.0.
3.3 Clarification of classes
In this document, the classes detail what inspections are applicable and the allowable defect limits. It is up to the cognizant engineering organization to specify the inspections required for part after an assessment of part criticality is determined. The following clarification is given for information only to assist the design activity and is not mandatory.
Class A: Critical application. A weldment is critical where a failure of any portion would cause loss of system, loss of major component, loss of control, unintentional release of critical stores, or endangering of personnel.
Class B: Semi-critical application. A weldment is semi-critical when a failure would reduce overall efficiency of the system but loss of the system or endangering of personnel would not be experienced.
Class C: Non-critical application. A weldment is non-critical where a failure would not affect the efficiency of the system or endanger personnel.
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