Operation Manual
16
WARNINGS and SAFETY RECOMMENDATIONS relating to OXYGEN
• Maximum limits for exposure to oxygen should not be exceeded, and the
consequences of CNS (Central Nervous System) oxygen toxicity can be
severe, resulting in Gran Mal convulsions and drowning.
• Conducting repetitive dives using enriched nitrogen-oxygen mixtures
(Nitrox) can lead to oxygen buildup, increasing oxygen saturation and the
risk of pulmonary oxygen toxicity.
• If you exceed the maximum per dive allowable oxygen exposure limit, it is
recommended that you allow a surface interval of at least 2 hours before
reentering the water.
• If you exceed the maximum 24 hour period allowable oxygen exposure limit,
it is recommended that you allow a surface interval of at least 24 hours
before reentering the water.
• Allowing O2 to reach or exceed allowable limits greatly increases your risk of
CNS oxygen toxicity, and may result in serious injury or death.
• It should not be considered that the capabilities built into Oceanic PDCs
provide any implied approval or consent from Oceanic for individuals to
exceed the dened limits of recreational dive proles, as agreed on by all
internationally recognized training agencies.