Final answer:
The question pertains to how frequently fuel-oil storage tanks and piping systems should be inspected for leaks. While it can vary, the common practice is an annual inspection. These inspections are crucial for safety, environmental protection, and the integrity of the system.
Step-by-step explanation:
The frequency of inspection for fuel-oil storage tanks and piping systems depends on the regulations set by local jurisdictions or by specific industry guidelines. However, a common practice followed for preventive maintenance is to inspect these systems at least annually.
Thorough inspections are vital to prevent environmental contamination, to ensure safety, and to maintain system integrity. During inspections, professionals look for any signs of corrosion, leaks, and structural damage, and they typically perform both visual checks and more sophisticated methods such as ultrasonic thickness testing or radiography. Ensuring regular inspections can help identify potential issues early on, saving on costly repairs and preventing dangerous situations from arising due to leaks or system failures.