A customer has an industrial process refrigeration system that contains 1000 pounds of R-22 and has exceeded the leak-rate threshold. How often must leak inspections occur?

• A. Every 3 months
• B. Every month
• C. Every 6 months
• D. Annually

Answer: (A)

When a large industrial process refrigeration system (more than 50 pounds of refrigerant) has leaked beyond the allowed rate, the rules require checking for leaks every three months. In this scenario, the system holds 1000 pounds of R-22 and has already exceeded the leak-rate threshold, so the correct requirement is leak inspections on a quarterly basis. This quarterly cadence helps identify and repair leaks promptly to minimize emissions. Monthly checks are not required here, and semiannual or annual inspections would not meet the mandated frequency once the threshold is exceeded.