The SSI Extended Range Nitrox Diving program (Tec 40) provides divers with the training necessary to independently plan and conduct limited decompression dives to a maximum depth of 40 meters/130 feet, using Nitrox mixtures of up to 50% and recreational or Extended Range Total Diving Systems and procedures with an equally-qualifed dive buddy. 

Prerequisites:

• Certification Prerequisites: Deep Diving and Enriched Air Nitrox 40% certification
• Have logged at least 24 dives.
• Open Water Dives: 2 days
• Maximum Training Depth: 40m/130' 

All dives must be completed using one of the following configurations:

• A complete recreational Total Diving System, appropriate for single gas switch, non-accelerated decompression diving. One stage cylinder and stage regulator, oxygen cleaned as required. 
• A complete recreational Sidemount Total Diving System, appropriate for single gas switch, non-accelerated decompression diving.
  One stage cylinder and stage regulator, oxygen cleaned as required.

This course includes:

• Classroom sessions: You must complete an Extended Range Nitrox Diving  final exam with a passing score of 80% and be able to independently plan a full dive plan using the Extended Range Dive Planning sheet.
• Gear configuration sessions
• Confined water sessions
• The first 2 open water training dives must be conducted at depths no deeper than 30m/100'.
• The 3rd/4th training dives must be conducted at depths between 30m/100' and 40m/130'.
• One dive must be to minimum of 35m/115' for certification.