The SSI SCR Diving program provides divers with the knowledge and training necessary to independently plan and conduct semi-closed rebreather (SCR) dives to a maximum depth of 30 meters, using an SCR Total Diving System and SCR diving procedures with an equally- or more-qualified dive buddy.

MINIMUM INSTRUCTOR RATING

An active status, unit-specific SCR Extended Range Instructor may conduct the unit-specific SCR Extended

Range program

ADMINISTRATIVE REQUIREMENTS

Prior to training, students must have completed the program-specific Training Record, including:

• Statement of Understanding

• Privacy Statement

• Medical History form

• Waiver and Release of Liability and Risk Awareness Verification (where applicable)

STUDENT PREREQUISITES

Have logged at least:

• 24 total dives

Have the following SSI certifications or an equivalent from a recognized training agency:

• Enriched Air Nitrox 40

• Deep Diving

DURATION

• Recommended hours for completion: 32-40.

MATERIALS AND EQUIPMENT

Students participating in this program must use at least the following equipment configuration:

A complete SCR Total Diving System that:

Has CE-type approval Is approved by SSI

Two cylinders (minimum volume 5.7 liters) with:

Second stage with 1-2 meter hose and SPG Oxygen cleaned as required

A surface marker buoy (SMB) Surface signaling device Spool or reel appropriate for the planned dive depth

Cutting device Backup OC/SCR computer for bailout in the event of a system failure Backup mask Manufacturer and/or SSI Pre-Dive Checklist

DEPTH LIMITATIONS

• Maximum depth limit for Open Water Training Dive 1and 2: 12 meters.

• Maximum depth limit for Open Water Training Dive 3: 20 meters.

• Maximum depth limit for Open Water Training Dives 4 and 5: 30 meters.

• Maximum depth limit for Open Water Training Dive 6 and any additional training dives: 40 meters.

• At least one (1) dive must be to a depth of 35 meters.

REQUIREMENTS FOR COMPLETION

• Complete all academic sessions and assessments as outlined in the unit-specific instructor manual for SCR Extended Range.

• Complete an SCR Extended Range final exam with a passing score of at least 80%.

• Complete a unit-specific final exam with a passing score of at least 80%.

• Complete an equipment configuration session as outlined in the instructor manual for SCR Extended Range.

• Complete the XR Water Fitness Evaluation as outlined in the SSI Training Standards.

• Complete at least one (1) pool/confined water skill development session with a minimum cumulative time of at least one (1) hour as outlined in the instructor manual for SCR Extended Range.

• Complete at least six (6) open water training dives as outlined in the instructor manual for SCR Extended Range.

• Complete at least 420 minutes of in-water runtime on the applicable SCR unit.

NOTES

• Open Water Training Dives 1 and 2 must be planned within the no-decompression limits of the student’s dive computer, dive planning software, or the SSI Combined Air/EAN Tables.

• The total time for all required decompression stops on all training dives must not exceed 25 minutes per dive.

• The volume of the carried bailout gas should be based on each individual diver’s gas calculations plus 30% for reserve, and sufficient to complete a gas sharing ascent and all required decompression.

• The on-board nitrox bottom gas must not have a ppO2 higher than 1.6 bar at the deepest planned depth ofthe dive.

SEQUENCE

• Open Water Training Dives 1 and 2 may only be conducted after the student successfully completes the equipment configuration session, the XR Water Fitness Evaluation, and all pool/confined water skill development sessions.

• Open Water Training Dives 3 through 6 may only be conducted after the student successfully completes all academic sessions, the final exam, and Open Water Training Dives 1 and 2.

CERTIFICATION

The SCR Extended Range certification entitles the holder to dive with an equally- or more-qualified buddy, with the equipment configuration used during training and SCR diving procedures, to depths of up to 40 meters with a maximum of 25 minutes decompression, providing that dives are conducted in environments similar to those of the diver’s training and experience.

UPGRADES

Students upgrading from SCR Diving to SCR Extended Range must complete the following:

• All SCR Extended Range academic sessions and assessments as outlined in the instructor manual for SCR Extended Range.

• Complete an SCR Extended Range final exam with a passing score of at least 80%.

• At least one (1) additional pool/confined water skill development session lasting at least one (1) hour.

• Open Water Training Dives 5 and 6 as outlined in the instructor manual for SCR Extended Range.

• At least 120 minutes of open water runtime on the applicable SCR unit.

Students upgrading from a CCR Diving certification to SCR Extended Range must complete the following:

• All unit-specific theory and procedures, including a final exam with a passing score of at least 80%.

• At least one (1) additional pool/confined water skill development session with a cumulative time of at least one (1) hour.

• Open Water Training Dives 3 through 6 as outlined in the instructor manual for SCR Extended Range.

Students upgrading from the CCR Extended Range certification to SCR Extended Range must complete the following:

• All unit-specific theory and procedures, including a final exam with a passing score of at least 80%.

• At least one (1) additional pool/confined water skill development session with a cumulative time of at least one (1) hour.

• Open Water Training Dives 5 through 6 as outlined in the instructor manual for SCR Extended Range.