Who is referred to as the Authority having Jurisdiction?

The Authority Having Jurisdiction (AHJ) is typically defined as an organization, office, or individual responsible for enforcing the codes and standards pertaining to specific areas, such as building safety and gas installations. This entity has the authority to interpret the applicable codes and to make decisions regarding compliance and safety standards.

In this context, the role of the Authority Having Jurisdiction encompasses a range of responsibilities, including the examination of plans, the inspection of work, and the enforcement of legal compliance within a given jurisdiction. It plays a crucial role in maintaining public safety, as it ensures that all applicable codes are followed to prevent hazards associated with gas use.

The other options, while related to safety and regulations, do not fully encompass the broad and formal scope of the AHJ's authority. An individual enforcing safety regulations may be part of the AHJ but doesn't represent the complete structure or authority of the body responsible for the enforcement of gas codes. A committee of local utilities might provide input or recommendations, but it wouldn’t hold the formal authority to enforce regulations. A national regulatory body, while important, typically oversees a wider scope and does not handle local enforcement directly. Thus, the A option correctly encapsulates the definition and scope of the Authority Having Jurisdiction.