CWB Welding - Chapter 5 (Basic Inspection Methods) verified to pass 2023/2024

CWB Welding - Chapter 5 (Basic Inspection Methods)An inspector is acting as a responsible representative of an organization when decisions are: - correct answer Formed based on consultation with the governing procedures and standards. True or False? Due to the variety of welded structures requiring inspection, no one class on inspector is expected to the proficient in all types of inspection. - correct answer False. A welding inspector must: - correct answer Be familiar with drawings and symbols. When deviations from drawings and specifications are warranted, such deviations should be: - correct answer Obtained and recorded by the inspector upon release from the design agency. True or False? Prior to welding being carried out on a contract, it is the duty of the inspector to verify that welding procedure and performance qualifications have been established and approved. - correct answer True. Briefly describe the stage at which visual inspection should begin? - correct answer Prior to the actual fabrication operations. True or False? Magnetic particle inspection utilizes a magnetic field, which can be induced in non-magnetic materials. - correct answer False. When inspecting welds using magnetic particle testing, what is the common way to induce the magnetic field when using direct or alternating current? - correct answer AC/DC Yoke What type of current is used to detect subsurface defects when using a magnetic particle test? - correct answer DC. True or False? Magnetic particle testing can be used in all positions, including overhead. - correct answer True. Briefly explain why is it necessary to clean the weld zone surface with a solvent to remove grease and dirt before liquid penetration inspection? - correct answer Foreign or solid containments can block openings, foreign liquids can dilute penetrant. Which of the following terms define the time period in which penetrant must remain on the surface? - correct answer Dwell time. Depending on the type of penetrant being used, what two methods are permitted for the removal of the surface penetrant, prior to the application of developer? - correct answer Water washable/solvent removable. Some specifications limit halogen content in penetrant test materials because under certain conditions they can cause stress corrosion cracking in what materials? - correct answer Austenitic stainless steels. Careless removal of excess penetrant from irregular weld profiles, including weld ripples, can cause which of the following conditions? - correct answer False indications. True or False? Ultrasonic testing of welds utilizes sound frequencies between 2.5 and 5 Mhz. - correct answer True. The two primary ultrasonic beam modes used in weld testing are: - correct answer 1. Longitudinal 2. Shear Wave When there is a change in a material, such as a void caused by a defect, the velocity of the ultrasonic beam changes and _____ occurs. - correct answer Acoustic mismatch. Ultrasonic sound waves are generated by applying electric pulses to: - correct answer Piezoelectric crystals. In carbon steel, a shear wave beam moves at a velocity of: - correct answer 0.323 cm/micro second.