What is the minimum surface interval for tenders on Treatment Tables 5, 6, 6A, 1A, 2A, or 3 before no-decompression diving?

The minimum surface interval required for tenders on Treatment Tables 5, 6, 6A, 1A, 2A, or 3 before engaging in no-decompression diving is 18 hours. This specific surface interval is crucial for minimizing the risk of decompression sickness, as it allows the body adequate time to off-gas excess nitrogen absorbed during treatment.

Adhering to this guideline helps ensure that divers are in a safe physical condition before they enter the water again. By maintaining this 18-hour window, divers can confidently resume diving activities without the heightened susceptibility to decompression illnesses that may occur with insufficient surface intervals. This standard is based on extensive research into safe diving practices following hyperbaric treatment, making it a fundamental aspect of diver safety protocols.