Which statement correctly lists all three fluid leakage classes?

• A. Class I, Class II, and Class III
• B. Class I and Class II
• C. Class I only
• D. Class II only

Answer: (A)

Fluid leakage is categorized into three levels to convey severity and guide the required action. All three levels exist: Class I, Class II, and Class III. Class I means slight seepage that does not affect system operation and can be monitored. Class II indicates moderate leakage with more noticeable seepage or small drips that may require maintenance soon. Class III denotes heavy leakage with continuous dripping or pooling, requiring immediate shutdown and repair. Therefore, the statement that lists all three classes correctly reflects the standard categories used. This classification helps crews decide when to service equipment and what safety actions are needed.