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AWS Senior Certified Welding Inspector (SCWI)
Exam Actual exam Questions with Correct Answers
and explanations LATEST THIS YEAR -just released
Exam Coverage Summary (Body of Knowledge)
1. Quality Assurance & Management (25-30%)
• ISO 9001: Process approach (PDCA), document control, corrective action, internal audits, and
management review requirements .
• AWS QC1: Specific requirements for CWI/SCWI qualification, certification maintenance, and
duties .
• Statistical Methods: Trend analysis, control charts, and sampling plans for welding process
control .
2. Technical & Metallurgical Fundamentals (25-30%)
• Ferrous & Non-Ferrous: Austenitic stainless steel (D10.4), high-alloy steels, and aluminum
welding metallurgy .
• Heat Treatment: Pre-heat, interpass temperature control, PWHT parameters (soak time,
temperature ramp rates) .
• Calculations: Heat input (kJ/in or kJ/mm), hardness conversions, and strength calculations .
3. Welding Processes & Procedure Qualification (20-25%)
• AWS B2.1: PQR and WPS qualification rules—thickness ranges, essential variables (F-Numbers,
A-Numbers), and re-qualification triggers .
• Procedure vs. Performance: Distinction between qualifying a WPS vs. a Welder; limits of
qualification .
4. Advanced NDT & Examination (15-20%)
• Advanced Methods: Acoustic Emission Testing (AET), Leak Testing (LT), and Helium Leak
Detection .
• Conventional NDT: Application limits of RT, UT, MT, PT, and VT per AWS B1.10 and B1.11 .
5. Training & Personnel Management (5-10%)
• ASNT SNT-TC-1A: Employer-based NDT personnel qualification, levels of certification, and
written practices .
• Auditing: First-party, second-party, and third-party audit requirements .
200 SCWI Scenario-Based MCQs (Exam Relevant)
Instructions: Select the best answer. Rationales are provided in bold.
Section A: Quality Assurance & ISO Systems (Q1-40)
Q1. During an external ISO 9001 audit of a fabrication shop, the auditor finds that the "Corrective
Action" log for a major non-conformance (root cause: lack of fusion) is closed but the same defect re-
appears at the same station six months later. What requirement has the shop MOST likely failed to
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implement?
A) Document control
B) Verification of corrective action effectiveness
C) Management review input
D) Control of monitoring and measuring resources
Answer: B
Rationale: ISO 9001 requires not just taking corrective action but verifying its effectiveness to prevent
recurrence; closing a log without checking long-term results indicates a system failure .
Q2. An SCWI is reviewing a Quality Manual. It states that the "Quality Manager" is responsible for
holding management review meetings, but the latest meeting minutes are signed only by the Production
Manager. According to ISO 9001 principles, what is the status of this management review?
A) Valid, because management includes production leadership
B) Invalid, because the responsible person defined in the manual did not conduct it
C) Valid, if the Production Manager has completed a course on quality
D) Invalid, unless the CEO also signs the minutes
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Answer: B
Rationale: The Quality Management System (QMS) requires adherence to assigned responsibilities. If
the manual specifies the Quality Manager, deviations break the process control loop .
Q3. An auditing SCWI observes that welding consumables are stored in a non-climate-controlled
warehouse. The procedure requires "low hydrogen" storage. The hygrometer in the rod oven reads
80°F, but there is no humidity reading. How should this be reported?
A) Minor observation only, as temperature is the primary control
B) Major non-conformance, as low hydrogen requires control of Relative Humidity (RH) or specific oven
conditions
C) Not reportable, as the inspector is only responsible for welds
D) Positive finding, because temperature is within acceptable range
Answer: B
Rationale: Low hydrogen electrodes require specific storage conditions (usually 250-300°F or specific RH
control). Monitoring only temperature without humidity is insufficient .
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Q4. A company has a high rate of weld repairs. The SCWI recommends using a Pareto Chart. What is the
primary purpose of this tool in this context?
A) To track the cost of consumables per shift
B) To separate the "vital few" defect types from the "trivial many"
C) To monitor the stability of the welding current over time
D) To determine the tensile strength of the weld
Answer: B
Rationale: Pareto Analysis (80/20 rule) prioritizes problem-solving by identifying the most frequent or
costly defect types first .
Q5. An SCWI is setting up a training matrix. AWS QC1 requires that to maintain certification, a CWI must
accumulate how many Professional Development Hours (PDH) every 3 years?
A) 80 PDH
B) 40 PDH
C) 20 PDH
D) 60 PDH
AWS Senior Certified Welding Inspector (SCWI)
Exam Actual exam Questions with Correct Answers
and explanations LATEST THIS YEAR -just released
Exam Coverage Summary (Body of Knowledge)
1. Quality Assurance & Management (25-30%)
• ISO 9001: Process approach (PDCA), document control, corrective action, internal audits, and
management review requirements .
• AWS QC1: Specific requirements for CWI/SCWI qualification, certification maintenance, and
duties .
• Statistical Methods: Trend analysis, control charts, and sampling plans for welding process
control .
2. Technical & Metallurgical Fundamentals (25-30%)
• Ferrous & Non-Ferrous: Austenitic stainless steel (D10.4), high-alloy steels, and aluminum
welding metallurgy .
• Heat Treatment: Pre-heat, interpass temperature control, PWHT parameters (soak time,
temperature ramp rates) .
• Calculations: Heat input (kJ/in or kJ/mm), hardness conversions, and strength calculations .
3. Welding Processes & Procedure Qualification (20-25%)
• AWS B2.1: PQR and WPS qualification rules—thickness ranges, essential variables (F-Numbers,
A-Numbers), and re-qualification triggers .
• Procedure vs. Performance: Distinction between qualifying a WPS vs. a Welder; limits of
qualification .
4. Advanced NDT & Examination (15-20%)
• Advanced Methods: Acoustic Emission Testing (AET), Leak Testing (LT), and Helium Leak
Detection .
• Conventional NDT: Application limits of RT, UT, MT, PT, and VT per AWS B1.10 and B1.11 .
5. Training & Personnel Management (5-10%)
• ASNT SNT-TC-1A: Employer-based NDT personnel qualification, levels of certification, and
written practices .
• Auditing: First-party, second-party, and third-party audit requirements .
200 SCWI Scenario-Based MCQs (Exam Relevant)
Instructions: Select the best answer. Rationales are provided in bold.
Section A: Quality Assurance & ISO Systems (Q1-40)
Q1. During an external ISO 9001 audit of a fabrication shop, the auditor finds that the "Corrective
Action" log for a major non-conformance (root cause: lack of fusion) is closed but the same defect re-
appears at the same station six months later. What requirement has the shop MOST likely failed to
, Page 2 of 123
implement?
A) Document control
B) Verification of corrective action effectiveness
C) Management review input
D) Control of monitoring and measuring resources
Answer: B
Rationale: ISO 9001 requires not just taking corrective action but verifying its effectiveness to prevent
recurrence; closing a log without checking long-term results indicates a system failure .
Q2. An SCWI is reviewing a Quality Manual. It states that the "Quality Manager" is responsible for
holding management review meetings, but the latest meeting minutes are signed only by the Production
Manager. According to ISO 9001 principles, what is the status of this management review?
A) Valid, because management includes production leadership
B) Invalid, because the responsible person defined in the manual did not conduct it
C) Valid, if the Production Manager has completed a course on quality
D) Invalid, unless the CEO also signs the minutes
, Page 3 of 123
Answer: B
Rationale: The Quality Management System (QMS) requires adherence to assigned responsibilities. If
the manual specifies the Quality Manager, deviations break the process control loop .
Q3. An auditing SCWI observes that welding consumables are stored in a non-climate-controlled
warehouse. The procedure requires "low hydrogen" storage. The hygrometer in the rod oven reads
80°F, but there is no humidity reading. How should this be reported?
A) Minor observation only, as temperature is the primary control
B) Major non-conformance, as low hydrogen requires control of Relative Humidity (RH) or specific oven
conditions
C) Not reportable, as the inspector is only responsible for welds
D) Positive finding, because temperature is within acceptable range
Answer: B
Rationale: Low hydrogen electrodes require specific storage conditions (usually 250-300°F or specific RH
control). Monitoring only temperature without humidity is insufficient .
, Page 4 of 123
Q4. A company has a high rate of weld repairs. The SCWI recommends using a Pareto Chart. What is the
primary purpose of this tool in this context?
A) To track the cost of consumables per shift
B) To separate the "vital few" defect types from the "trivial many"
C) To monitor the stability of the welding current over time
D) To determine the tensile strength of the weld
Answer: B
Rationale: Pareto Analysis (80/20 rule) prioritizes problem-solving by identifying the most frequent or
costly defect types first .
Q5. An SCWI is setting up a training matrix. AWS QC1 requires that to maintain certification, a CWI must
accumulate how many Professional Development Hours (PDH) every 3 years?
A) 80 PDH
B) 40 PDH
C) 20 PDH
D) 60 PDH
