Type III mock exam, question 32 of 50

A 650-pound R-11 chiller that cools a chemical process exceeds the 30% leak rate. How often must leak inspections be done?

• AOnce per calendar year, until a full year of calculations is under the rate
• BOnce a month, until the chiller is retrofitted
• CEvery six months, until two inspections find no leaks
• DEvery three months, until four quarters in a row are under the rate