Under what condition can the RNT Exception Rule be applied when preparing for a third or greater dive?

The RNT Exception Rule can be applied when preparing for a third or greater dive as long as it follows the guidelines outlined in Table 9-8. This rule is specifically designed to allow divers to manage their dive profiles and nitrogen loading more effectively during repetitive dive scenarios. Table 9-8 provides detailed parameters that divers must adhere to, allowing them to adjust their no-decompression limits and dive plans accordingly.

By following the guidelines in this table, divers ensure that they remain within safe diving practices while still taking advantage of the RNT Exception Rule. This rule considers various factors such as previous dive profiles, depth, and surface intervals to allow for a more flexible approach to multiple dives. Proper application of these guidelines helps to minimize the risk of decompression sickness, making them vital for safe dive planning in repeated dive scenarios.