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Decompression Tech
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INFORMATION
NTEC
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Local Diving

Email
mastertrimix@mac.com
Telephone
718 384 1280

Not this Technical!

WHEN:   By appointment

LOCATION:   Classes are held in Manhattan or Stingray Divers-Brooklyn; Open Water location at Dutch Springs PA, or Forty Fathoms-Ocala FL. Note: The open water location can sometimes be tailored to meet desired dive site demands.

OVERVIEW: This course provides the EANx certified diver with the skills and knowledge needed to minimize the risks of utilizing optimal breathing gas EANx mixtures of 28% through 100% (oxygen) for dives to a maximum training depth of 130 fsw (40 msw) not requiring mandatory decompression. (This course may be combined with the Decompression Techniques Diver.)

Note: 100% oxygen is used for decompression and 28% to 50% EANx is used for bottom mix in shallow water applications.

QUALIFICATIONS OF GRADUATES: Upon successful completion of this course, graduates are considered competent to utilize EANx mixtures 28% through 100% (oxygen) without direct supervision provided the diving activities and the areas dived approximate those of training.

PREREQUISITES FOR ENTERING THE COURSE:
Minimum age: 18
Minimum certification: NAUI EANx Diver and Deep Diver (or equivalent)
Required dives: 50 logged dives with l0 dives on EANx
Other:   Dive instructor's approval, dive insurance and have signed medical and liability waivers

COURSE POLICIES:
Classroom hours: 12 estimated
Open water dives: 4 estimated (approximately 10 dives if combined with Decompression Techniques Diver course)

EQUIPMENT: NAUI Technical Equipment Configuration (NTEC).   This configuration is mandatory.

REQUIRED READING
Technical EANx Decompression Techniques and Extended Rangeby Jan G. Neal               
Can be purchased at Stingray Divers

CLASS TOPICS COVERED

Nitrox Review

1. Introduction/history-advantages and limitations of EAN
2. Oxygen Toxicity
3. Signs and symptoms of Oxygen toxicity
4. Gases and Gas properties-Boyles and Daltons law
5. Best EAN mix
6. Equivalent Air Depth (EAD)

Physiology

1. Oxygen Toxicity-in depth
2. Decompression Sickness
3. Bubble Theory History
4. Nitrogen Narcosis
5. Carbon Dioxide poisoning  

Equipment-NTEC

1. History of diving equipment configuration
2. Technical equipment-Hicks law-Hogarthian-DIR
3. EAN/Oxygen ready equipment
4. Oxygen analysis
5. Gas mixing procedures

Dive Planning

1. Gas consumption -SCR
2. Turn rules
3. Decompression models and rules--Pyle-stops and Gradient Factors
4. RGBM tables   
5. Dive Planning sheets and preparation
6. Diving method-decent, ascent, the dive

Contingencies

1. Altitude and flying
2. S-Drill, Check-stop, and Safety-stops
3. Missed decompression stops
4. Signals and communication
5. Emergency protocols

DIVE SKILL REQUIREMENTS

1. At least 4 dives are to be made using EANx, including at least one repetitive dive
2. Safety plan is to be written for each dive day/location
3. Student is to analyze their own gas mix and make a written Dive Plan in conjunction with Team Plan
4. Conduct a structured dive in full technical diving gear then calculate personal working SCR
5. Demonstrate the use of various kicking techniques-modified flutter, modified frog, helicopter turn, and backups
6. Show controlled decent and ascent rates with S-drill, Check-stop and safety-stops
7. With good buoyancy and trim student must be able to remove and replace cylinder stage bottle(s)
8.   Student must demonstrate the use of three different underwater communication/signal techniques
9. Student is to participate in an emergency gas supply loss scenario, i.e., switch to separate redundant system and ascend to the surface.
10. Save a simulated victim in blackout mask situation with long hose
11. Students will participate in a diver rescue simulation to include management of a diver experiencing oxygen toxicity