In the context of the D1.1 code, which of the following is NOT listed as a pre-qualified process?

In the context of the D1.1 code, which of the following is NOT listed as a pre-qualified process?

• A. SMAW
• B. FCAW
• C. SAW
• D. GMAW-S Short Circuiting

Answer: (D)

In the context of the D1.1 code, the pre-qualified welding processes are those that have been thoroughly tested and found to meet specific criteria, eliminating the need for separate qualification testing for standard applications. Shielded Metal Arc Welding (SMAW), Flux-Cored Arc Welding (FCAW), and Submerged Arc Welding (SAW) are all recognized as pre-qualified processes under the D1.1 code due to their widespread use and established performance in various applications. GMAW-S, or Gas Metal Arc Welding with Short Circuiting Transfer, does not fall under the pre-qualified processes because it involves certain variables, such as the potential for spatter and control of the arc, which can lead to a need for specific testing or qualification under different parameters. The variability and control challenges associated with short circuiting transfer lead the code to not categorize it as pre-qualified, necessitating additional considerations and possibly full qualification testing in many applications to ensure weld integrity. Therefore, this recognition emphasizes the necessity of specific qualification measures for this welding method compared to the others listed.

In the context of the D1.1 code, the pre-qualified welding processes are those that have been thoroughly tested and found to meet specific criteria, eliminating the need for separate qualification testing for standard applications. Shielded Metal Arc Welding (SMAW), Flux-Cored Arc Welding (FCAW), and Submerged Arc Welding (SAW) are all recognized as pre-qualified processes under the D1.1 code due to their widespread use and established performance in various applications.

GMAW-S, or Gas Metal Arc Welding with Short Circuiting Transfer, does not fall under the pre-qualified processes because it involves certain variables, such as the potential for spatter and control of the arc, which can lead to a need for specific testing or qualification under different parameters. The variability and control challenges associated with short circuiting transfer lead the code to not categorize it as pre-qualified, necessitating additional considerations and possibly full qualification testing in many applications to ensure weld integrity. Therefore, this recognition emphasizes the necessity of specific qualification measures for this welding method compared to the others listed.