This certification is intended for experienced welders, inspectors, engineers, or technicians seeking to demonstrate competence in welding inspection. It qualifies individuals to act as a Certified Welding Inspector, a role crucial for quality control in fabrication.
Pass mark 70/90120 minutesReal test fee approx £2500TWI Certification Ltd (CSWIP)How many can I get wrong?
About this practice. Revision Robin is built and maintained by Bloor Engineering Ltd, a UK-registered company. Our CSWIP 3.1 Welding Inspector questions are written and reviewed in-house to match the current syllabus, each with a plain-English worked explanation. They are original practice material, not the official exam questions and not affiliated with or endorsed by TWI Certification Ltd (CSWIP). Always confirm current test rules, fees and content with the official provider. See our Terms and Privacy.
Weak on a topic? Drill just that one till it clicks, then move on.
Free practice questions
Try 3 real CSWIP 3.1 Welding Inspector questions
Have a go, then reveal the worked explanation. A taster from a bank of 209 original questions. Unlock for unlimited drills and full timed mocks.
Q1. What is considered the primary function of a Welding Inspector?
A. To personally train and qualify all welders on a project.
B. To ensure the project is completed ahead of schedule and under budget.
C. To verify that all welding and related activities are performed in accordance with the specified requirements.
D. To select the most cost-effective welding consumables for the job.
Show answer & explanation
✓ Answer: C. To verify that all welding and related activities are performed in accordance with the specified requirements.
The core duty of a Welding Inspector is to act as a quality control checkpoint, verifying conformance to codes, standards, and project specifications.
Q2. In a fillet weld, what dimension is measured from the root of the joint to the toe of the weld?
A. Throat Thickness
B. Leg Length
C. Weld Face
D. Root Gap
Show answer & explanation
✓ Answer: B. Leg Length
The leg length is the distance from the joint root to the toe of the fillet weld, a primary measurement for determining the weld's size.
Q3. Which of the following is the most likely cause of solidification cracking, often found along the centreline of a weld?
A. Using low-hydrogen consumables on a clean joint.
B. Applying a high level of preheat to a thick section.
C. A high travel speed combined with a very deep and narrow weld bead.
D. Insufficient inter-run cleaning in a multi-pass weld.
Show answer & explanation
✓ Answer: C. A high travel speed combined with a very deep and narrow weld bead.
A high depth-to-width ratio of the weld bead promotes the segregation of low-melting-point impurities to the centreline, which then cracks under shrinkage stress.
Exam mode
Full mock exam
90 random questions, real timing, marked against the official pass mark. Different every time.
The first 8 of 90 questions are free, with your score on them. Finishing the paper, your result against the pass mark and every answer explained come with the paid version.
Try it free
Topic drills
Ten quick questions on one topic, marked instantly with explanations.
1 free drill left.
Who has to sit the CSWIP 3.1 Welding Inspector
Who needs a CSWIP 3.1 Welding Inspector?
Professionals overseeing fusion-welded steel construction, especially in oil & gas, marine, offshore, & structural fabrication.
The real CSWIP 3.1 Welding Inspector: format
How many questions are in the CSWIP 3.1 Welding Inspector?
The real CSWIP 3.1 Welding Inspector has 120 questions and lasts 300 minutes. Our mock uses 90 questions in 120 minutes.
What is the CSWIP 3.1 Welding Inspector pass mark?
Real exam pass mark: 70% in each individual section (theory papers and practical). Our mock marks you at 70 out of 90, the threshold we mark against.
What it costs, and what a resit costs
How much does the CSWIP 3.1 Welding Inspector cost?
Rebooking after a fail: One retest allowed within one year; not within 30 days unless extra approved training is taken.
How hard is it
How hard is the CSWIP 3.1 Welding Inspector?
Difficulty: High, requiring 70% in each section. Known as 'famously unforgiving' and 'quite strict'.
Figures for the real exam from google.com, vertexaisearch.cloud.google.com, checked October 2026. Fees and rules change, so confirm with the test provider before you book.
CSWIP 3.1 Welding Inspector: common questions
Frequently asked
How long do you get?
The test is timed at 120 minutes. Our full mock runs on the same clock so you can practise your pacing.
Are these the real exam questions?
No. Our questions are original and written to match the current syllabus, so they give realistic practice without copying the official paper. Every answer comes with a plain-English explanation. Always confirm current rules and content with TWI Certification Ltd (CSWIP).