Final answer:
The welding inspector should verify that the fabricator's ITP complies with industry standards, not approve it without changes or ignore deviations.
Step-by-step explanation:
When reviewing a fabricator's Inspection and Test Plan (ITP) on behalf of the client, the welding inspector's responsibility is to ensure that the ITP is comprehensive and complies with the relevant industry standards and specifications. The correct answer to the question posed is to ensure compliance with industry standards, which means carefully reviewing the ITP to ascertain that all the procedures and checks listed are in line with the standards that apply to the particular project.
The welding inspector should not approve the ITP without changes unless it fully meets the necessary requirements. Any deviations from the ITP or non-conformances must be addressed, not ignored. The ITP should detail the quality control processes and hold points, and it must be adhered to strictly to ensure the integrity of the welds and ultimately, the safety of the structure being fabricated.