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GUE CCR SOP문서는 GUE 공식 홈페이지에서 볼수 있습니다.
| 번호 | 항목 설명 | 수정사항 요약 | 비교 페이지 (v1.0 / v2.0) |
|---|---|---|---|
| 1 | Dive Profile 마지막 정지 깊이 | – 최종 감압 정지 깊이 6m → 3m | p8 / p7 |
| 2 | Oxygen Exposure Management | – GB 기준 pO₂ 1.3과 1.4 혼제 사용하지않고 pO₂ 1.3로 통일 – 고 pO₂ 사용 시, OC 가스를 활용한 저 pO₂ 브레이크 가능 명시 | p9, 10 / p8–9 |
| 3 | CCR 등급별 ACE 제한 | – GUE SCR 20L 명시 – CCR-F/T1은 200분 제한, T2/Cave는 추정 | p13 / p10 |
| 4 | Bailout 가스 계획 | – CCF-F safety factor 적용. – 최소 BMG 명시(825L) | p17–18 / p11–13 |
| 5 | HUD 교정 및 고도 보정 조건 추가 | – 산소 98% 이상 / 이하로 기준 완화 – 1.4.3 항목으로 신설: 고도/저산소 시 보정 필수 – 고도 환경(저기압)이나 98% 미만 산소 사용 시 HUD의 정확한 보정 절차를 공식화 | p23 / p15 |
| 6 | 비상 시나리오 상세화 (pO₂ runaway 등) | Runaway 별도 구분, Failure Cards | p41–49 / p33–42 |
1번 항목: Dive Profile 마지막 정지 깊이
* GUE의 권장 정지 깊이가 6m → 3m로 얕아짐.
📘 v1.0 원문 (p8)
When feasible and practical, the last stop should be conducted at 6 m / 20 ft, followed by a slow ascent of 1 m / 3 ft per minute to the surface.
📙 v2.0 원문 (p7)
When feasible and practical, the last stop should be conducted at 3 m / 10 ft, followed by a slow ascent of 1 m / 3 ft per minute to the surface.
2번 항목: Oxygen Exposure Management
- pO₂ 1.3과 1.4 혼재 사용하지않고 pO₂ 1.3로 통일. (p9/p8)
- 고 pO₂ 사용 시, OC 가스를 활용한 저 pO₂ 브레이크 가능 명시
- DecoPlanner에서 조정 시 반드시 검토 필요 명시
📘 v1.0 원문 (p10)
Gas breaks are introduced when the O2 exposure get close to or above 100 CNS%. 12 minutes is spent on high pO2 followed by 6 minutes of reduced pO2 exposure. The practice slows down the CNS% accumulation and allows for very long exposures. This is how a gas break can be performed on a rebreather:
The most practical method of managing oxygen exposure on a rebreather is to only use moderate pO2’s during the dive. If the total dive pO2 is equal to or lower than 1.3, there is no need to perform any gas breaks.
📙 v2.0 원문 (p8–9)
Gas breaks are introduced when the O2 exposure approaches or exceeds 100 CNS%. Traditionally on OC approximately 12 minutes is spent on high pO2 followed by 6 minutes of reduced pO2 exposure. The practice slows down the CNS% accumulation and allows for very long exposures.
The most practical method of managing oxygen exposure on a rebreather is to only use a moderate pO2 during the dive. If the dive’s total pO2 is equal to or lower than 1.3, there is no need to perform any gas breaks.
If a higher pO2 is used during decompression, gas breaks may be needed. These can be conducted with the low pO2 break done on an appropriate OC gas.
Any adjustments in decompression profiles should be done carefully and by verification in DecoPlanner.
3번 항목: CCR 등급별 Absorbent Canister Endurance (ACE) 제한
- CCR 레벨 분류: CCR-F, CCR-T1, CCR-T2, CCR Cave로 세분화됨
- ACE 시간 제한: CCR-F, T1 → 200분 제한
- ACE 추정 가능 대상: CCR-T2, CCR Cave → 추정 가능
📘 v1.0 원문 (p13)
1.2.3: GUE Absorbent Canister Endurance Estimations
• The following may serve as a guideline but MAY NOT replace proper planning and personal accountability.
• CCR level 1 divers are limited to an Absorbent Canister Endurance (ACE) of 200 minutes assuming unused Sofnolime 797.
• CCR level 2 divers are responsible for estimating the correct absorbent canister endurance based on the actual parameters encountered and expected CO2 production.
These divers must remain aware such estimations are complicated given the lack of predictable linearity in CO2 capture…
Divers MUST maintain sufficient bailout gasses and plan a switch to OC should emergencies or stressful encounters negate their previous assumption…
📙 v2.0 원문 (p10)
1.2.5: GUE Absorbent Canister Endurance Estimations
The following may serve as a guideline but DOES NOT replace proper planning and personal accountability.
● CCR-F and CCR-T1 divers are limited to an Absorbent Canister Endurance (ACE) of 200 minutes.
● CCR-T2 and CCR Cave divers may choose to extrapolate ACE based on the actual parameters encountered and expected CO2 production.
Divers are cautioned that any extrapolation is complicated given the inability to measure actual CO2 during a dive…
Divers MUST maintain sufficient bailout gasses and plan a switch to OC should the need arise…
1.2.5 GUE Absorbent Canister Endurance Estimations
…
○ Assuming a standard GUE SCR of 20 L / min (0.75 ft3 / min) a CO2 production of 0.8 L
/min can be estimated and a new ACE of 400 min extrapolated
4번 항목: Bailout 가스 계획
- 최소 기준을 명확히 강제
- Safety factor 적용
📘 v1.0 원문 (p17–18)
BMG (Bailout Minimum Gas) 관련 내용
BMG is the minimum amount of gas needed to reach the surface in an emergency.
The diver should calculate this gas based on experience and conservative assumptions.
➤ 계산식은 명시되어 있지 않으며, 경험 기반 또는 보수적 접근만 권장됨
📙 v2.0 원문 (p11–13)
1.3.4.2: CCR-F 안전 계수 및 최소 요구량
At the CCR F level, a 1.5x safety factor is applied to BMG.
Even if the calculation allows for less, divers are required to retain (round up) to a BMG of 825 L (32 ft³).
5번 항목: HUD 교정(HUD Calibration) – 고도/산소 농도 보정 조건
- 98% 이상 / 이하로 기준 완화
- 1.4.3 항목으로 신설: 고도/저산소 시 보정 필수
- 고도 환경(저기압)이나 98% 미만 산소 사용 시 HUD의 정확한 보정 절차를 공식화
📘 v1.0 원문 (p23)
1.5.1 – 1.5.3: Rebreather Calibration
- Pre-dive calibration of the controller (99.5 to 100%)
- Pre-dive calibration of the HUD
- Calibrating with less than 99.5% oxygen
When calibrating with less than 99.5% oxygen, the system will assume a lower reference value, which must be manually adjusted.
There is no specific mention of high altitude conditions or separate handling for the HUD under these conditions.
📙 v2.0 원문 (p14–15)
1.4.1 – 1.4.3: Rebreather Calibration
1.4.1: Calibrating with more than 98% oxygen:
→ HUD/handset must be verified to display 1.00 pO₂ at sea level.1.4.2: Calibrating with less than 98% oxygen:
→ A correction factor must be used in the controller settings.1.4.3: Calibrating the HUD at altitude or with less than 98% oxygen:
→ HUD must be calibrated using controller-adjusted reference values if barometric pressure is significantly different from sea level.
→ Specific instructions for altitude environments now provided.
6번 항목: 비상 시나리오 상세화 (특히 pO₂ runaway 등)
- “Safe vs Unsafe” 두 가지로 단순 구분 -> Hyperoxia vs Runaway 별도 분리, 반응 단계 차별화됨
- 팀 신호 → 수동 차단 → 즉시 bailout 등 단계적으로 상세화
- 4.1절에서 표 형태로 실패 상황별 대응 정리
- Handset failure, Sensor Voting Logic Failure 등 명시적 구분
📘 v1.0 원문 (p41–43)
3.4: Unintentional Oxygen Addition
- 3.4.1: Increasing but Safe pO₂
If pO₂ rises unintentionally but stays within safe limits, evaluate and stabilize buoyancy, consider flushing with diluent.
- 3.4.2: Hyperoxic Warning (Unsafe pO₂)
If oxygen continues to rise dangerously:
- Turn off solenoid
- Manually flush with diluent
- Go off-loop if pO₂ remains too high
- 3.4.3: Oxygen Supply Depleted or Interrupted
Treat depending on whether pO₂ drops slowly or critically (hypoxic condition)
📙 v2.0 원문 (p33–34, p40–41)
3.4: Unintentional Oxygen Addition
- 3.4.1: Increasing but Safe pO₂
Same as v1.0 – monitor, stabilize, flush with diluent
- 3.4.2: Unintentional O₂ Addition – unsafe (Hyperoxia)
Enhanced detail:
- Switch to OC if loop is unrecoverable
- Evaluate solenoid failure
- Check for loop volume trapping excess O₂
- Team communication emphasized
- 3.4.3: O₂ Runaway
New explicit scenario, separated from hyperoxia warning:
- Solenoid stuck open or handset failure
- pO₂ rapidly climbs above 1.6
- Immediate off-loop bailout required
- Flush loop aggressively or switch to OC
- Abort dive and signal team