IANTD CCR Recreational Diver

Recreational Closed Circuit Rebreather Diver

A. Purpose
1. This Program is designed to train Recreational divers in the safer use and technology of basic CCR diving with no
decompression, up to 1.2 PO2 and to depths up to 70 fsw (21 msw). This course may be used as an entry-level course to
SCUBA diving if combined with the OW program in which case OC dives will be substituted with CCR dives.
2. A diver already qualified as OW Deep diver completing this program, can dive to a maximum depth of 100 fsw (30 msw) if they
are guided or supervised dive by a rebreather supervisor or instructor. The training requirements here in are IANTD minimums.
Other manufacturer’s requirements MAY APPLY for specific Rebreathers so consult manufacturers literature prior to
B. Prerequisites
1. This may be used as the entry level of diving or as a CCR course for experienced recreational divers, desirous of remaining at
recreational level.
2. Must be either an IANTD EANx Diver or equivalent or it may be taken in conjunction with the EANx Diver class.
3. Must be a minimum of 17 years of age.
C. Program Content
1. All lectures completed with IANTD Course-specific Slides pertaining to the theory in the IANTD OW Diver and Recreational
CCR diver CCR-specific Diver Student Kit.
2. This program must include a confined water session, followed by four (4) OW dives with a minimum of 300 minutes of in-water
training time on the specific rebreather for which the diver is being trained.
2. Students must pass the specific OW CCR test with a minimum score of 80%.
3. The student and instructor must carry sufficient gas to ascend safely to the surface in the event of a bailout to OC is required
and to adequately support the OC bailout practices.
D. Text & Equipment Requirements
1. IANTD Recreational CCR-specific Diver Student Kit, and to include the IANTD CCR “S” Drill sheet C-3401.
2. Approved specific Rebreather suitable for the training exposure. If the student does not take possession of, or have access to a
CCR within three (3) months of completion of training a refresher course will be required on the CCR that must include review
of operations of that CCR, and two (2) dives on the CCR.
3. Instructors must have the IANTD Waterproof Skills Sheets on all confined and OW dives.
E. Program Limits
1. There may be no more than 4 students per Instructor, except for when a CCR qualified Dive Supervisor is used at which time
the ratio may be increased to 6 students.
2. No dives may be conducted to depths greater than 70 fsw (21 msw).
3. The set point of the CCR must not exceed 1.2 PO2 for all dives within the class. All dives must be completed within the IANTD
oxygen CNS% limits with air or EANx (not to exceed 1.0 PO2 at max depth of dive) as the only diluents.
4. The instructor may use a Rebreather or OC during training sessions however it is recommended that the instructor use a
rebreather at all times to better demonstrate skills and monitor the student.

F. Water Skills Development – Open Water Training must include the following skills:
1. Complete all in water skills for OW diver if not already qualified as a diver.
2. Pre-dive checks including a pre-breathe. Must use the IANTD “S” Drill waterproof chart C-3401 during training.
3. Switch to low set point for descent and monitor the PO2 to ensure it remains within the planned PO2 range.
4. Switch to planned set point once the diver is at the planned dive depth or set point change depth.
5. In water leak and buddy leak check. If conditions prohibit this after entry this then immediately upon arrival at a stable depth.
Where practical this may be accomplished between just below the surface to 20 fsw (6 msw) deep.
6. Descend and ensure gas addition is made.
7. Open Circuit bailout practice for Hyperoxia, Hypoxia, Flooded loop, and Hypercapnia (including at least two [2] OC ascents
from approximately 60 fsw (18 msw).
8. Adjust buoyancy and trim.
9. Proper operation of computer controlling and secondary equipment.
10. PO2 gauge monitoring to be done no more frequently that once a minute and no less often than once every four (4) minutes.
11. Buoyancy and trim on the bottom during ascent and at safety stops.
12. Safety Stop practice.
13. Post dive briefing.
14. At least two (2) times on each dive, Instructor is to signal to student(s) that they have an emergency. On the last two (2) dives,
present the following situations. The student is to perform appropriate actions and write down the suspected problem. At least
once per dive perform complex (multi-part) scenarios such as Hypoxia or Hyperoxia drill for donor while gas sharing by handing
bailout cylinder or other bailout mechanism to an out-of-gas diver ascend.

Inhalation counterlung inflating rapidly Suspect solenoid failure open ; switch to OC
Feeling unusual Switch to OC
Buoyancy has changed to very negative Switch to OC
Difficult breathing counterlung at correct volume Switch to OC
Weakness in legs Switch to OC
Shortness of breath Switch to OC
Feeling of well being Switch to OC
Feel like you are about to blackout Switch to OC
Muscle twitching Switch to OC
Nausea Switch to OC
Ears ringing Switch to OC
Hearing or visual abnormalities Switch to OC
Feeling dizzy Switch to OC
Extreme quietness (absence of solenoid noise) Suspect electronics off, or solenoid defective
Solenoid fires but no oxygen injected Suspect oxygen supply empty or cylinder off (valve closed) or inline
valve closed
Diluent not being added Suspect diluent cylinder empty or cylinder off (valve closed) or inline
valve closed
2 cells read high but low cell checks with diluent PO2 Switch to OC
2 cells read high and check with diluent PO2 Switch to OC

CENA: 3900 PLN