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Before welding components, the welders' qualifications need to be checked. Does a tack welder also need to do a performance qualification test?
Before welding components, the welders' qualifications need to be checked. Does a tack welder also need to do a performance qualification test?
Open 122An AC yoke is a device used in which NDT technique?
An AC yoke is a device used in which NDT technique?
Open 123A maximum interpass temperature is generally given to control?
A maximum interpass temperature is generally given to control?
Open 124Which of the following is considered the main limitation of the radiographic method of NDT?
Which of the following is considered the main limitation of the radiographic method of NDT?
Open 125For ultrasonic testing, which of the following statements is true?
For ultrasonic testing, which of the following statements is true?
Open 126In a heavy plate fabrication where S in residual @ 0.3%, which may cause problems in the welded joint, addition of Mn may be added to prevent:
In a heavy plate fabrication where S in residual @ 0.3%, which may cause problems in the welded joint, addition of Mn may be added to prevent:
Open 127Preheats are used on steel joints of high hardenability mainly to:
Preheats are used on steel joints of high hardenability mainly to:
Open 128Lamellar tears in steel weldments may only be formed when:
Lamellar tears in steel weldments may only be formed when:
Open 129Lamellar tearing is a problem in steels which is always associated with?
Lamellar tearing is a problem in steels which is always associated with?
Open 130Sensitization is a term applied to the formation of which intermetallic compound at the grain boundaries in the HAZ of austenitic steels?
Sensitization is a term applied to the formation of which intermetallic compound at the grain boundaries in the HAZ of austenitic steels?
Open 131Which of the following processes is most prone to solidification cracking?
Which of the following processes is most prone to solidification cracking?
Open 132The temperature gradient of steels subjected to post-heat treatment stress relief cycles must be carefully controlled at all the temperatures above 300°C in order to:
The temperature gradient of steels subjected to post-heat treatment stress relief cycles must be carefully controlled at all the temperatures abo...
Open 133For the structure termed martensitic to form in a C-Mn steel it must first be heated to?
For the structure termed martensitic to form in a C-Mn steel it must first be heated to?
Open 134During root welding, which of the following would be the main cause of excess penetration?
During root welding, which of the following would be the main cause of excess penetration?
Open 135Why is it essential to clean the excess weld metal on completion of the production weld?
Why is it essential to clean the excess weld metal on completion of the production weld?
Open 136Why would visual inspection of the excess weld material at the bottom of a cross-country pipeline be important?
Why would visual inspection of the excess weld material at the bottom of a cross-country pipeline be important?
Open 137What information would be recorded as a minimum on a completed production weld?
What information would be recorded as a minimum on a completed production weld?
Open 138Why is the OCV capped at this voltage setting?
Why is the OCV capped at this voltage setting?
Open 139What is the maximum OCV allowable to initiate an arc when using AC current?
What is the maximum OCV allowable to initiate an arc when using AC current?
Open 140The welder had increased the voltage on the SAW welding set, what would be the effect on the weld?
The welder had increased the voltage on the SAW welding set, what would be the effect on the weld?
Open 141What does the term WPQR mean?
What does the term WPQR mean?
Open 142Which of the following could be used to minimize the occurrence of solidification cracking in steel welds?
Which of the following could be used to minimize the occurrence of solidification cracking in steel welds?
Open 143Which BS EN standard is used for welding symbols on drawings?
Which BS EN standard is used for welding symbols on drawings?
Open 144Why is it sometimes necessary to preheat the base material before welding?
Why is it sometimes necessary to preheat the base material before welding?
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