CWI Code Book Application 2

Question 1

When AWS D1.1 requires a prequalified WPS, which condition would disqualify it from prequalified status?

Accepted Answer

Exceeding the maximum interpass temperature for the process

Answer

Exceeding the maximum interpass temperature specified in AWS D1.1 removes a WPS from prequalified status and requires qualification testing.

Question 2

Under AWS D1.1, what is the minimum preheat temperature required for ASTM A514 steel with thickness over 2½ inches when using SMAW?

Accepted Answer

200°F (95°C)

Answer

AWS D1.1 Table 3.2 requires a minimum preheat of 200°F (95°C) for A514 steel over 2½ inches thick when welded with SMAW.

Question 3

In AWS D1.1, what does the term 'essential variable' mean in the context of a WPS?

Accepted Answer

A variable that, if changed, requires re-qualification of the WPS

Answer

An essential variable is one whose change beyond specified limits requires requalification of the welding procedure specification.

Question 4

Per AWS D1.1, a CJP groove weld in a T-joint subjected to tension perpendicular to its axis is classified as which joint category for inspection purposes?

Accepted Answer

Category B

Answer

AWS D1.1 classifies CJP groove welds in T-joints and corner joints as Category B for NDT purposes.

Question 5

When using AWS D1.1 Table 6.1 for visual inspection of groove welds, what is the maximum allowable undercut depth for a statically loaded member in tension?

Accepted Answer

1/16 inch (1.6 mm)

Answer

AWS D1.1 Table 6.1 permits undercut not exceeding 1/16 inch (1.6 mm) for statically loaded members in tension.

CWI Practice Test

CWI Practice Test

CWI Code Book Application 2