Certified welding inspector Exam Questions And Answers 100% Pass
0 view 0 purchase
Course
Certified welding inspector
Institution
Certified Welding Inspector
Certified welding inspector Exam Questions
And Answers 100% Pass
Nondestructive examination - answerDetermines the suitability of a material or compound
without compromising its serviceability. Identifies flaws discontinuities and other imperfections,
then determines whether they exceed the all...
Certified welding inspector Exam Questions
And Answers 100% Pass
Nondestructive examination - answer✔Determines the suitability of a material or compound
without compromising its serviceability. Identifies flaws discontinuities and other imperfections,
then determines whether they exceed the allowable tolerance of a specification. Ultrasonic
testing is one of the most common forms used.
Destructive examination - answer✔The test specimen is damaged, destroyed, or otherwise
rendered unserviceable. Very useful for determining certain aspects of steel quality like
mechanical properties and strength.
Visual inspection - answer✔Conducted before during and after welding by trained and qualified
CWI helps identify errors before they become significant problems. If done consistently and
regularly it can identify problems before they start and generally results an acceptable work.
VT - answer✔As a CWI performing visual inspection you will need to make sure the WPS is
qualified and applicable to the weldment, and that the welder is adhering to his requirements
through fabrication.
Interpass inspections - answer✔Checking for cleanliness, slag removal, sufficient space for weld
deposit, and complete fusion will help avoid the vast majority of discontinuities let me otherwise
become a parent doing subsequent nondestructive testing.
VT steps after welding - answer✔1) inspect the weld
2) check dimensions
3) check post weld heat treatment
4) Monitor nondestructive testing
VT before welding started - answer✔1) review application documentation
2) check WPS
3) develop inspection plan
Discontinuities - answer✔An interruption or irregularity in the typical structure of a material.
Cracks, porosity, voids, or slag inclusions are examples of irregularities in the normal structure
of a weldment, but are not necessarily rejectable.
Defect - answer✔Rejectable discontinuity that exceeds acceptance criteria and is standard or
specification. All defects are discontinuities but discontinuities are not all defects.
Flaw - answer✔And undesirable discontinuity; a nonstandard term synonymous with defect but
doesn't automatically mean the discontinuity is rejectable, what is considered severe enough that
it should be avoided.
Dimensional discontinuity - answer✔Dimensions of a weldment or member are incorrect, but
has no obvious discontinuities and appears to have been properly completed.
Linear discontinuities - answer✔Have length much longer than their width. Example: cracks
More detrimental than nonlinear because the Sharper the end of a discontinuity, is the more
likely it is to propagate or spread.
Types of Discontinuities - answer✔Cracks, incomplete fusion, incomplete joint penetration,
slag/tungsten inclusions, porosity, undercut, underfill, overlap, convexity and reinforcement, arc
strikes, spatter, lamination and lamellar tears, scenes and laps.
cracks - answer✔Occur when the load or stress apply to a part exceeds the parts tensile strength.
The most severe type of discontinuity and are rarely permitted to any degree and Welding codes
due to the likelihood of their extremely sharp and to continue growing.
Hot cracks - answer✔Usually occur as the metal solidifies, at some elevated temperature. The
propagation of these cracks is considered to be intergranular; that is the cracks occur between
individual grains.
Nonlinear discontinuities - answer✔Essentially equal in length and width. example parosity,
void, slag inclusion
Longitudinal cracks - answer✔Approximately parallel to the axis of the world joint these types
of cracks are usually caused by transverse stressors, either from shrinkage doing Welding or
stress applied during service.
Transverse Cracks - answer✔Approximately perpendicular to the axis of the world a joint, these
cracks are caused by longitudinal stress.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Brightstars. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
