Question 156Refrigeration & AC - Assistant Engineer

70% to pass

With regards to shipboard refrigeration systems, after July 1, 1992, what action became illegal?

Aworking on a refrigeration system without permission of the officer in charge Marine Inspection

Bmixing R-12 and R-22

Cintentionally venting class I or II refrigerants to the atmosphere

Dproducing a class I refrigerant

AI Explanation

The correct answer is C) intentionally venting class I or II refrigerants to the atmosphere. After July 1, 1992, it became illegal to intentionally vent class I or II refrigerants to the atmosphere under the Clean Air Act. This was done to protect the ozone layer by reducing the release of ozone-depleting substances used in refrigeration systems. The other answer choices are not correct - working on a refrigeration system requires proper training and authorization, mixing different refrigerants is generally not recommended, and producing class I refrigerants was already prohibited under the Clean Air Act.