1 / 18

Dive Planning Workshop

Dive Planning Workshop. Dive Plan – Profile. Dive: 30m using EAN 34 Bottom Time: 40 minutes ppO 2 = 1.36 MOD of EAN34 = 31m EAD = 23.4m Decompression: 8 minutes @ 4.5m using EAN 50 MOD of EAN50 = 22m. Dive Plan - Steps. Oxygen Tracking Deep Stops, Decompression Stops

paloma
Download Presentation

Dive Planning Workshop

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Dive Planning Workshop

  2. Dive Plan – Profile • Dive: 30m using EAN 34 • Bottom Time: 40 minutes • ppO2 = 1.36 • MOD of EAN34 = 31m • EAD = 23.4m • Decompression: 8 minutes @ 4.5m using EAN 50 • MOD of EAN50 = 22m

  3. Dive Plan - Steps • Oxygen Tracking • Deep Stops, Decompression Stops • Run Times – Write up Slate • Gas Management • Bottom Gas • Deco. Gas • Safety

  4. Dive Plan – Oxygen tracking CNS% Oxygen Tracking: CNS% at 30m (EAN34) ppO2 = 1.36 CNS% per min = 0.62 (Table 4) Total CNS% = 0.62 x 40 = 24.8% for bottom mix

  5. Dive Plan – Oxygen tracking CNS% at 4.5m (EAN50) ppO2 – 0.725 CNS% per min = 0.19 (Table 4) Total CNS% = 0.19 x 8 = 1.52% for deco mix Total CNS% for dive = 24.8 + 1.52 = 26.32% OK

  6. Dive Plan – Oxygen tracking Pulmonary Oxygen Tracking: (Demonstration Only) OTU’s at 30m (EAN34) OTU Table 1 30m on EAN 34 = Q OTU Table 2 Letter Q, 40 min = 64 OTU (Bottom Mix)

  7. Dive Plan – Oxygen tracking OTU’s at 4.5m (EAN50) OTU Table 1, Inset table 4.5m on EAN 50 = E OTU Table 2 Letter E, 8 min = 5 OTU (Deco mix) Total OTU for dive = 64 + 5 = 69 OTU’s OK

  8. Dive Plan – Pyle stops Calculate Pyle Stops & Run Times for Dive Start Ascent – 36 min Ascent 30m to 4.5m Pyle Stop – 17m for 2 min Pyle Stop – 11m for 2 min Total bottom time – 40min Ascent – 3 min Decompression – 4.5m for 8 min

  9. Dive Plan - Run times Depth Stop Run Time Gas 30 m 36 min EAN 34 17 m 2 min 39 min 11m 2 min 42 min 4.5m 8 min 51 min EAN 50 Surface 52 min Depth - 30m BT - 40 mins (2 Pyle Stops)

  10. Dive Plan – Gas management RMV = 18 l/min 30m = 4bar RMV at 30m = 18 x 4 = 72 l/min

  11. Dive Plan – Gas management Bottom Mix: Descent & Bottom Phase: Gas Required = RMV at depth x Time = 72 x 36 = 2,592 litres

  12. Dive Plan – Gas management Bottom Mix: Ascent & Deep Stops: RMV at Depth = RMV x Pressure Avg. Pressure = (4 Bar + 1 Bar)/2 = 2.5 Bar RMV at Depth = 18 x 2.5 = 45 l/min Time = Actual Ascent + Deep Stops = 3 + 4 = 7 minutes

  13. Dive Plan – Gas management Bottom Mix: Ascent & Deep Stops: Gas Required = RMV at depth x Time = 45 x 7 = 315 litres Total Bottom Mix = 2592 + 315 = 2,907 litres of EAN 35

  14. Dive Plan – Gas management Rule of Thirds Two thirds = 2907 litres Total gas required = 4361 litres Require: 2 x 12 litre cylinders @ 182 bar

  15. Dive Plan – Gas management Decompression stop at 4.5m RMV on stop = 18 x 1.45 = 26.1 l/min Stop 8 min = 26.1 x 8 = 209 litres Gas rule 1.5x usage = 209 x 1.5 = 314 litres Require: 3 litre cylinder EAN 50 @ 105 bar

  16. Dive Plan – Safety profiles • Calculate deeper depth and longer time • Calculate using bottom mix as decompression gas • Information on slate • Compare with buddy • Check all figures

  17. Summary • Extra details for dive plan • Pre-dive plan • Support platform • Group selection • Gas availability • Emergency • Support divers • Whole dive plan

  18. Questions?

More Related