Extended Range Diver Course
This course provides training and experience required to competently utilize air for dives up to 180 fsw I 55 msw that require staged decompression, utilizing nitrox mixtures or oxygen during decompression.
COURSE OBJECTIVES
The objective of this course is to train divers in the proper techniques, equipment requirements, and hazards of deep air diving to a maximum of 180 fsw / 55 msw and utilizing nitrox mixtures or oxygen for staged decompression.
QUALIFICATIONS OF GRADUATES
A. Upon successful completion of this course, graduates may engage in technical extended range diving activities without direct supervision so long as: 1 The diving activities approximate those of training 2 The area of activities approximate those of training 3 Environmental conditions approximate those of training B. Upon successful completion of this course, graduates are qualified to enroll in: 1 TDI Advanced Wreck Course 2 TDI Entry Trimix Gas Course 3 TDI Advanced Trimix Gas Course
STUDENT PRE-REQUISITES
A. Minimum age of 18 B. Minimum of 100 logged dives, of which 25 must be deeper than 100 fsw / 30 msw, or the equivalent at the discretion of the instructor. C. Certification as a TDI Advanced Nitrox Diver and TDI Decompression Procedures Diver (or equivalents) are required.
for more information contact the Diving Center
Marsa Shagra goes TEC !
REQUIRED COURSE MINIMUMS
A. Classroom / Briefing Hours - 8 B. Openwater Dives - 6 with a minimum accumulated bottom time of 100 minutes. All dives must be deeper than 100 fsw / 30 msw with four dives deeper than 130 fsw / 40 msw. (No more than 2 dives may be credited from previous training)
REQUIRED EQUIPMENT
The following equipment is required for each student A. Bottom Mix Cylinder(s) 1 Cylinder volume appropriate for planned dive and student gas consumption 2 Dual outlet valve, double manifold or independent doubles 3 Labeled in accordance with TDI Standards B. Travel Mix Cylinder(s) if used 1 Cylinder volume appropriate for planned dive and student gas consumption 2 Labeled in accordance with TDI Standards C. Decompression Mix Cylinder(s) 1 Cylinder volume appropriate for planned dive and student gas consumption 2 Labeled in accordance with TDI Standards D. Regulator(s) 1 Primary and primary redundant required on all bottom mix cylinders 2 Submersible pressure gauges are required on all primary / bottom mix cylinder(s) 3 A contingency use long hose second stage should be designated and appropriately rigged to facilitate air sharing at depth if necessary E. Buoyancy Compensator(s) adequate for equipment configuration F. Redundant Depth and Timing Devices Air decompression computers allowed for use as depth and timing devices. G. Redundant Light System if needed for site conditions H. Jon-line and other rigging lines as dictated by site conditions I. Ascent Reel with Lift Bag/Surface Marker Buoy 1 Adequate for maximum planned depth 2 Minimum of 25 lb. lift bag/surface marker buoy
for more information contact the Diving Center
Marsa Shagra goes TEC !
J. Exposure Suit adequate for the open water environment K. Line Cutting Device (2) L. Underwater Slate (for decompression/contingency tables)
REQUIRED OPEN WATER SKILLS
The following openwater skills must be completed by the student during open-water dives. The maximum depth for this course is 180 fsw /55 msw. A. Properly analyze all gas mixtures to be used B. Demonstrate adequate pre-dive planning 1 Limits base on personal and team gas consumption 2 Limits based on oxygen exposures at planned depths for actual mixes 3 Limits based on nitrogen absorption at planned depths for actual mixes C. Properly execute the planned dive within all pre-determined limits D. Demonstrate the proper procedures for switching and isolating a malfunctioning regulator. This skill is to be performed at a depth no deeper than 130 fsw/40 msw E. Demonstrate the proper navigational techniques for the specific dive F. On two dives, demonstrate an ascent with ascent reel and lift bag. Perform staged decompression G. On one of the dives, tow a simulated unconscious diver, while at depth, 30 ft to ascent line and simulate an emergency rescue ascent technique
GRADUATION REQUIREMENTS
In order to complete this course, students must: A. Satisfactorily complete the TDI Extended Range Course written examination B. Complete all openwater requirements safely and efficiently C. Demonstrate mature and sound judgement concerning dive planning and execution
for more information contact the Diving Center
Marsa Shagra goes TEC !
SUPPORT MATERIALS
A. TDI Student Record Folder B. TDI Extended Range Diver Manual Recommended additional reading: Deep Diving; An Advanced Guide to Physiology, Procedures and Systems, Revised 2nd edition 1995, by Bret Gilliam
picture by Willie
for more information contact the Diving Center
Marsa Shagra goes TEC !
