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Question:

Commercial and industrial process refrigeration systems must be repaired when the leak rate exceeds ______ percent of the charge per year.

A 30 percent
Explaination

Commercial and industrial process refrigeration systems must be repaired when the leak rate exceeds 30 percent percent of the charge per year.
THIS BECAME EFFECTIVE IN JAN 2019: Leak rates, documentation, and inspection parameters changed. The new leak thresholds are now:
30% for Industrial Process Refrigeration
20% for Commercial Refrigeration
10% for Comfort Cooling
PREVIOUS THRESHOLDS:
35% for Industrial Process Refrigeration
35% for Commercial Refrigeration
15% for Comfort Cooling