Final answer:
The correct answer to the question is that refrigeration equipment with a capacity of 22 Kilowatts or greater containing a CFC refrigerant must be phased out in accordance to the Montreal Protocol to mitigate the impact on ozone layer depletion.
Step-by-step explanation:
The question pertains to the use of CFC (chlorofluorocarbon) refrigerant in industrial, commercial, and institutional refrigeration equipment and what action should be taken for units with a capacity of 22 Kilowatts or greater. According to the Montreal Protocol agreement established in 1987, the production and use of CFCs are to be phased out due to their harmful effects on the ozone layer. While several countries have made progress in eliminating CFCs, participation from developing countries is crucial for global success.
Notably, countries like China have been significant contributors to CFC emissions. The Montreal Protocol aims to reduce these emissions, and there are signs of ozone recovery, which is a positive indicator that the protocol's measures are working. Therefore, the correct answer is that such equipment must be phased out as per international agreements to protect the environment.