CWI Code Book Application Questions and Answers

Question 1

A fabricator has a Welding Procedure Specification (WPS) qualified on 1/2-inch thick plate.
According to AWS D1.1, what is the maximum thickness of base metal this WPS is qualified to weld in production?

Accepted Answer

1 inch

Answer

1/2 inch

Answer

3/4 inch

Answer

Unlimited thickness

Question 2

According to the visual inspection acceptance criteria for statically loaded non-tubular connections in AWS D1.1, which of the following describes the allowable limit for undercut on base metal that is 3/4-inch thick?

Accepted Answer

Undercut shall not exceed 1/32 inch.

Answer

Undercut shall not exceed 1/16 inch for any length of weld.

Answer

Undercut is unacceptable in any amount.

Answer

Undercut shall not exceed 10% of the base metal thickness.

Question 3

A welder successfully qualifies by performing a CJP groove weld test on a 3/8-inch thick plate in the 3G (vertical-up) position per AWS D1.1. This qualification allows the welder to perform which of the following production welds?

Accepted Answer

Fillet welds in the 1F, 2F, and 3F positions.

Answer

CJP groove welds in the 4G (overhead) position.

Answer

Fillet welds on 1-inch thick plate.

Answer

CJP groove welds on 1/8-inch to unlimited thickness plate.

Question 4

When applying ASME Section IX, a change to which of the following is considered an essential variable for a Shielded Metal Arc Welding (SMAW) WPS, requiring the procedure to be requalified?

Accepted Answer

A change in the base metal P-Number.

Answer

A change in groove design.

Answer

A change from stringer to weave bead technique.

Answer

A change in the brand of an E7018 electrode.

Question 5

A CWI is monitoring the welding of a 1.5-inch thick steel plate where the qualified WPS, based on AWS D1.1, requires a minimum preheat and interpass temperature of 225°F. What is the correct protocol for measuring this temperature?

Accepted Answer

The temperature must be at or above 225°F in an area approximately 3 inches from the joint, just before initiating an arc.

Answer

The temperature must be measured on the weld bead immediately after the arc is extinguished.

Answer

The temperature must be measured 12 inches away from the joint to get an average reading.

Answer

Preheat is only required for the first pass; interpass temperature does not need to be monitored.

Question 6

A project's specifications mandate that all pipeline welding inspection must adhere to API 1104. An inspector performing radiographic testing (RT) identifies several indications. In which section of API 1104 would the inspector find the specific limits for the size and distribution of these indications to determine if the weld is acceptable?

Accepted Answer

Section 9, Acceptance Standards for Nondestructive Testing

Answer

Section 5, Qualification of Welding Procedures for Welds Containing Weld-Deposited Filler Metal

Answer

Section 6, Qualification of Welders

Answer

Section 11, Procedures for Nondestructive Testing