XR SCR Programs

SCR Extended Range

Intent

This program provides divers with the training necessary to:

Independently plan and conduct decompression rebreather dives,

In an XR SCR Total Diving System,

Using nitrox,

To a maximum depth of 40 meters,

For a maximum accumulated decompression time of 25 minutes,

With an equally- or more-qualified dive buddy.

Note | Beyond the SSI Training Standards, individual manufacturers may require additional prerequisites, experience, knowledge and skills. The instructor conducting this program must check with the applicable manufacturer for the latest standards and procedures.

Minimum Instructor Rating

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

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

Note | If the student does not have the Deep Diving certification, they must have at least ten (10) verified logged dives between 24-30 meters.

Duration

Recommended hours for completion: 32-40.

Minimum Equipment

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

A complete XR SCR Total Diving System.

In-Water Ratios

The student-to-instructor ratio is 3:1.

Depth Limitations

Maximum depth limit for Open Water Training Dive 1 and 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: 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 the program’s final exam.

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 General 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

Download all of the student’s logged training dives from their rebreather computer and retain for a minimum of ten (10) years. If the feature is not available on a rebreather, download the training dives from the student’s dive computer and retain for a minimum of ten (10) years.

Training Conditions

Breathing Gas and Decompression

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 based on the primary plan.

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.

Sequence

Open Water Training Dives 1 through 4 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 5 and 6 may only be conducted after the student successfully completes all academic sessions and Open Water Training Dives 1 through 4.

Certification

Upon completion of all academic and in-water requirements, the SSI Professional may issue the program’s digital certification card.

The SSI SCR Extended Range certification entitles the holder to dive autonomously:

In environments similar to those of the diver’s training and experience,

With the equipment configuration used during training,

To a maximum depth of 40 meters,

For a maximum accumulated decompression time of 25 minutes,

With an equally- or more-qualified dive buddy.