What is an emergency decompression stop?
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What is an emergency decompression stop?
A decompression stop is a pause in a diver’s ascent made to allow the body to expel dissolved gases primarily nitrogen in the blood. Without decompression stops, these gases would expand, turning into bubbles and causing decompression sickness.
How do you find no decompression limit?
What Factors Determine How Much Nitrogen a Diver Absorbs?
- Time: The longer a diver stays underwater, the more compressed nitrogen gas he absorbs.
- Depth: The deeper the dive, the more rapidly a diver will absorb nitrogen and the shorter his no-decompression limit will be.
What is the no decompression limit or NDL?
The no decompression limit (NDL) is the maximum allowable dive time that you can remain at a specific depth and ascend directly to the surface without requiring staged decompression stops on the way up. Remember the higher the partial pressure of nitrogen (ppN2), the shorter the dive time (NDL).
What happens if you exceed NDL?
The no decompression limit (NDL) is the maximum allowable dive time that you can remain at a specific depth and ascend directly to the surface without requiring staged decompression stops on the way up. If you accidentally exceed your NDL, follow the recommended stops displayed by the PDC. …
What is the NDL for a dive to 20 feet?
No Decompression Limits (NDL)
| Depth | Pressure | Oxygen (\%) |
|---|---|---|
| 10 m/33 ft. | 2 bar/ata | 21\% |
| 20 m/66 ft. | 3 bar/ata | 21\% |
| 30 m/99 ft. | 4 bar/ata | 21\% |
| 40 m/132 ft. | 5 bar/ata | 21\% |
What is no stop time in scuba diving?
The “no-decompression limit” (NDL) or “no-stop limit” , is the time interval that a diver may theoretically spend at a given depth without having to perform any decompression stops while surfacing.