What action must be taken in regards to fuel oil system installations?

In fuel oil system installations, it is crucial to have inspections conducted by an authorized inspector to ensure compliance with safety regulations and industry standards. These inspections serve to verify that the installation adheres to all applicable codes and regulations, which help prevent potential hazards such as leaks or system failures. Furthermore, the authorization of the inspector ensures that they possess the necessary expertise and knowledge to conduct a thorough evaluation of the installation.

By having an authorized inspector review the system, any deficiencies or issues can be identified and addressed before the system becomes operational. This proactive approach is vital in maintaining safety and reliability in fuel oil systems, as it helps to ensure that installations are carried out correctly and meet all required standards.

Other options suggest either a lack of inspections or inadequate testing, which would not uphold the necessary safety and compliance measures essential in fuel oil system installations. It is imperative for installations to follow a well-defined inspection process to guarantee their integrity and operational safety.