Final answer:
Inspections for unmanned Type V hydrant systems are generally performed at least annually, with the exact frequency being subject to local regulations or standards set by the relevant authority having jurisdiction.
Step-by-step explanation:
The question pertains to the inspection frequency for a Type V hydrant system within the context of engineering, particularly under the public works or civil engineering disciplines dealing with water supply and fire suppression systems. Type V hydrant systems are designed for firefighting and thus are occasionally unmanned during operation. Although specific standards can vary, as a general guideline, unmanned systems such as these are typically subject to inspections on a regular basis to ensure their functionality and readiness for emergency situations. At a minimum, these inspections are commonly performed on an annual basis. However, the exact frequency may be determined by local regulations or operational standards set by the relevant authority having jurisdiction (AHJ).