Final answer:
A probationary welder is typically restricted to welding under supervision in the position they have successfully completed during their assessment or qualification tests. They must work under experienced supervision until fully qualified for more diverse tasks.
Step-by-step explanation:
The question relates to the restrictions placed on a probationary welder, which often depend on the policies of the specific company or the standards set by a welding certification body. Typically, a probationary welder would be restricted to welding under supervision, in the position successfully completed during their assessment or qualification tests. This means that they cannot perform all types of welding work right away but are limited to the positions they have been assessed for and must work under the supervision of a more experienced welder until they gain full qualification and experience.
For example, if a probationary welder has been assessed and passed tests only for welding flat grooves and flat and horizontal fillets, they would be allowed to work on those types of welds under supervision. Only after further qualifications are obtained, and the welder has proven their skills in other welding positions, will the restrictions be lifted, allowing them to perform a broader range of welding tasks.