Asia Divers Limited Document Title : Air Diving Procedures Manual Doc. No : DIV-MA-0002 Page : 1 of 43 Rev : 0 Date : 06 th July 2001 Asia Divers Limited Air Diving Procedures Manual DIV-MA-0002 Copyright Copy No. Distributed to: W.P. No. Revision Description Date Prep QA Check Approved Accepted 0 Issue for Review 06/07/01 ANG
0.1 Record Of Amendments Rev Pages Details Revised Check Date Table Of Contents
0.1 Record Of Amendments... 2 0.2 References... 6 0.3 Abbreviations... 6 1.0 Administration... 8 1.1 Air Dive Reporting & Documentation... 9 1.1.1 Air Dive Report Sheet... 9 1.1.2 Diving Log... 9 1.1.3 Surface Decompression Chamber Log... 9 1.1.4 Monthly Consolidated Surface Dive Report... 10 1.1.5 Appendix 1 Surface Dive Sheet... 11 1.1.6 Appendix 2 Air Decompression Work Sheet... 11 1.1.7 Appendix 4 - Details to be Entered in Supervisor Deck Log... 13 1.2 Manning Levels & Operating Hours... 15 1.2.1 Manning Levels... 15 1.2.2 Operating Hours... 16 1.2.3 Diving Rota... 17 2 General Air Diving Procedures... 19 2.1 Introduction... 19 2.2 Maximum Depth... 19 2.3 Dive Plan... 19 2.3.1 On Site Planning (Dive Plan)... 19 2.4 Sea State & Wind Speed... 20 2.5 Fog & Poor Surface Visibility... 20 2.6 Current & Tidal Limitations... 21 2.7 Diver & Team Briefing... 21 2.8 Warning Displays... 21 2.9 Temporary Unfitness Of Diver To Dive... 21 2.10 Supervisor Diving... 22 3 DIVING OPERATIONS... 23 3.1 General... 23 3.2 Scuba Diving... 23 3.3 Surface Supplied Diving... 24 3.3.1 Maximum Depth... 24 3.3.2 Mixed Gas... 24 3.4 Live Boating Or Diving From A Craft Under Way... 24 3.5 Platform Diving... 24 3.6 Diving At Altitudes Greater Than Sea Level... 25 3.7 Means Of Entering & Leaving The Water... 25
3.8 Communications... 25 3.9 Personal Equipment... 26 3.10 Diver Tending... 26 3.10.1 Emergency Line Signals... 27 3.11 Back To Back Diving... 29 3.11.1 Introduction... 29 3.11.2 Availability of Deck Decompression Chamber... 30 3.11.3 Diving Procedures... 30 4 Minimum Quantities Of Air & Oxygen... 32 4.1.1 Air... 32 4.1.2 Oxygen... 32 4.1.3 Diving Gas Purity... 32 4.1.4 Compressed Breathing Oxygen... 32 4.1.5 Compressed Air Purity... 33 4.2 Standby Diver... 33 4.3 Bailout Bottle Endurance... 33 5 Equipment... 34 5.1 Dive Control Panel... 34 5.2 Surface Compression Chambers... 34 5.3 Compressors... 34 5.4 Umbilicals... 34 5.4.1 Umbilical Markings... 35 5.5 Pre Dive Checks... 35 5.6 Deck Chamber Check Lists... 35 5.6.1 Internal Checks... 35 5.6.2 External Checks... 35 5.6.3 Valve Checks... 36 5.6.4 Chamber Function Test... 36 5.7 Deployment System Check... 36 5.8 Wet Bell Checks... 36 5.9 Dive Basket Checks... 37 5.10 Inflatable Craft Checks... 37 5.11 Dive Control Panel... 37 6 Methods Of Deployment & Recovery Of The Diver... 38 6.1 Guarding of Running Wires on Diving Equipment... 38 6.2 Inflatable or Work Boats... 38 6.3 Diving Ladder... 38 6.4 Diving Basket... 38 6.5 Wet Bell... 39
7 Deployment Of Tools To The Diver... 40 8 Equipment Testing & Certification... 41 9 Emergency Procedures... 42 9.1 Instruction... 42 9.2 Loss of Breathing Media... 42 9.3 Loss of Communications... 42 9.4 Fouled or Entrapped Diver... 42 9.5 Injured Diver in Water... 42 9.6 Severance of Diver s Umbilical - Gas Hose Only... 43 9.7 Severance of Complete Umbilical... 43 9.8 Fire in Equipment... 43 9.9 Equipment Failure - Diver In The Water... 43 9.10 Emergency Evacuation... 43
0.2 References General Safety Manual, DIV-MA-00003 of Asia Divers Limited Note 1 IMCA Guidance Note D 015 Mobile/Portable Surface Supplied Systems Note 2 IMCA Guidance Note D 010 Diving Operations From Vessels Operating In Dynamically Positioned Mode" & AODC 050 Guidance Note on Surface Orientated Diving from DP Vessels Note 3 Note 4 Note 5 DMAC Guidance Note 022 Proximity to a Recompression Chamber After Surfacing" DMAC Guidance Note 07 Recommendations for Flying After Diving" DMAC Guidance Note 013 Guidance on Assessing Fitness to Return to Diving Note 6 DMAC Guidance Note 09 Fitness to Dive After Neurological Decompression Sickness Note 7 Note 8 IMCA Guidance Note AODC 048 Offshore Diving Team Manning Levels IMCA Guidance Note AODC 014 Minimum Quantities of Gas Required Offshore 0.3 Abbreviations AGE ATA ATS CFM DCS DP fsw Ft. FV lpm min msw O 2 O.I.M. PO 2 PCO 2 Arterial Gas Embolism Atmospheres Absolute Atmospheres Cubic Foot Per Minute Decompression Sickness Dynamic Positioning Feet of Sea Water Feet Floodable Volume Liters per minute Minutes Meters of Sea Water Oxygen Offshore Installation Manager Partial Pressure of Oxygen Partial Pressure of Carbon Dioxide