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

Correct Answer: Option C — intentionally venting class I or II refrigerants to the atmosphere

Under EPA Section 608 regulations aligned with the Clean Air Act, the intentional venting or purging of Class I and Class II ozone-depleting substances to the atmosphere became strictly illegal nationwide after July 1, 1992, requiring mandatory refrigerant recovery during service and decommissioning.