8) Requirements, with respect to welding inspection include:
- an emphasis on advanced communications between the inspection organizations and the
fabricators as well as timely scheduling of inspection
- a clear statement of the obligations of the fabricator in matters arising from results of
inspection
- conformance of nondestructive (NDT) procedures to pertinent clauses of the Standard and
applicable ASTM codes
9) Repair and strengthening of existing structures.
10) The concept of “prequalification” applies to SMAW, FCAW, MCAW, GMAW and SAW welding
processes.
11) As already pointed out, Clause 11 includes all design and construction provisions for statically
loaded structures. Clause 12 covers the requirements for cyclically loaded structures with
particular emphasis on fatigue, the inherent mode of behaviour under fluctuating loads typical of
bridges and crane runways.
2.9 CSA Standard W59.2
Welded Aluminum Construction
2.9.1 General
This standard is similar to CSA W59 (for steel construction) in format but specifies the requirements for
welded aluminum construction for general applications. For special applications such as pressure
vessels, pipelines or the aviation industry, other standards applicable to that specific type of fabrication
should be used. This standard gives provisions for the following welding processes:
- gas metal arc welding (GMAW)
- gas tungsten arc welding (GTAW)
- plasma arc welding (PAW)
- stud welding (arc and capacitor discharge process) (SW)
The Standard gives guidelines of design of welded connections, joint geometries, filler alloy selection,
filler metal alloy groupings and base metal alloy groupings. Inspection methods and acceptance
criteria are also provided. The appendix lists the physical properties and the mechanical properties of
alloys with various tempers, which is very important information for design engineers