All CWI practice questions

CWI Duties, Responsibilities and Safety practice questions

The inspector's role, ethics, documentation and communication under AWS QC1 and B5.1, plus welding safety basics from ANSI Z49.1. This domain is about 5% of the exam. Try each question, then open the answer.

Read the Duties, Responsibilities and Safety study guide

Question 1

Under the AWS CWI code of ethics, which action is a clear violation?
  1. Signing an inspection report for work the inspector did not inspect
  2. Asking for a copy of the governing code before starting work
  3. Declining an assignment outside one's competence
  4. Reporting a nonconformance to the client
Show answer

Answer: A. Signing an inspection report for work the inspector did not inspect

The QC1 code of ethics requires inspectors to act with integrity and report only what they have verified. Signing for uninspected work is falsifying a record and can lead to loss of certification.

Source: AWS QC1:2016-AMD1, Specification for AWS Certification of Welding Inspectors (code of ethics)

Question 2

Which is the most important quality of a welding inspection report?
  1. It uses as much technical jargon as possible
  2. It includes the inspector's opinion of the welders' attitudes
  3. It is written days later from memory
  4. It records factual, verifiable observations against the stated requirements
Show answer

Answer: D. It records factual, verifiable observations against the stated requirements

Reports may be used for acceptance decisions, audits or legal disputes. They should be accurate, complete, dated, signed and limited to what was observed and measured.

Source: AWS Welding Inspection Handbook, 4th ed., chapter on reports and records

Question 3

Why should chlorinated solvent degreasing be kept away from arc welding?
  1. The solvent will clean the weld too well
  2. The solvent makes the arc unstable
  3. The solvent residue increases spatter and porosity in the weld bead
  4. Arc UV can break the vapors down into phosgene, a toxic gas
Show answer

Answer: D. Arc UV can break the vapors down into phosgene, a toxic gas

Chlorinated hydrocarbon vapors can decompose in arc radiation to form phosgene. Degreasing must be located so vapors do not reach the welding area, and parts must be dry before welding.

Source: ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes (fumes and gases)

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