Plongée sous-marine

Surface Decompression Using Oxygen

Tables of surface Decompression Using Oxygen. Can be applied in emergency only if no deco chamber transportation possible.

A possible alternative to in water - Re compression

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

52

1:36

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

5:36

K

90

1:36

 

 

 

 

 

3

10

15

1

50:36

N

120

1:36

 

 

 

 

 

3

10

23

2

63:36

0

150

1:36

 

 

 

 

 

3

10

31

2

71:36

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

180

1:36

 

 

 

 

 

3

 

10

39

2

 

79:36

Z

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

70 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

40

2:00

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

6:00

*

70

2:00

 

 

 

 

 

3

10

14

1

50:00

M

85

2:00

 

 

 

 

 

3

10

20

2

61:00

N

100

2:00

 

 

 

 

 

3

10

26

2

67:00

O

115

2:00

 

 

 

 

 

3

10

31

2

72:00

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

130

2:00

 

 

 

 

 

3

 

10

37

2

 

78:00

 

150

2:00

 

 

 

 

 

3

10

44

3

90:00

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

80 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

32

2:24

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

6:24

J

60

2:24

 

 

 

 

 

3

10

14

1

50:24

M

70

2:24

 

 

 

 

 

3

10

20

2

61:24

N

80

2:24

 

 

 

 

 

3

10

25

2

66:24

N

90

2:24

 

 

 

 

 

3

10

30

2

71:24

O

100

2:24

 

 

 

 

 

3

10

34

2

75:24

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

110

2:24

 

 

 

 

 

3

 

10

39

2

 

80:24

 

120

2:24

 

 

 

 

 

3

10

43

3

89:24

 

130

2:24

 

 

 

 

 

3

10

48

3

94:24

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

90 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

26

2:48

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

6:48

I

50

2:48

 

 

 

 

 

3

10

14

1

50:48

L

60

2:48

 

 

 

 

 

3

10

20

2

61:48

N

70

2:48

 

 

 

 

 

3

10

26

2

67:48

O

80

2:48

 

 

 

 

 

3

10

32

2

73:48

O

90

2:48

 

 

 

 

 

3

10

38

2

79:48

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

100

2:48

 

 

 

 

 

3

 

10

44

3

 

90:48

 

110

2:48

 

 

 

 

 

3

10

49

3

95:48

 

120

2:24

 

 

 

 

2

4

10

53

3

103:24

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

100 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

22

3:12

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

7:12

H

40

3:12

 

 

 

 

 

3

10

12

1

49:12

L

50

3:12

 

 

 

 

 

3

10

19

1

56:12

M

60

3:12

 

 

 

 

 

3

10

26

2

68:12

N

70

3:12

 

 

 

 

 

3

10

33

2

75:12

O

80

2:48

 

 

 

 

2

3

10

40

3

89:48

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

90

2:48

 

 

 

 

2

4

 

10

46

3

 

96:48

 

100

2:48

 

 

 

 

2

5

10

51

3

102:48

 

110

2:48

 

 

 

 

2

12

10

54

3

112:48

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

110 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

18

3:36

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

7:36

H

30

3:36

 

 

 

 

 

3

10

9

1

46:36

J

40

3:36

 

 

 

 

 

3

10

16

1

53:36

L

50

3:36

 

 

 

 

 

3

10

24

2

66:36

N

60

3:12

 

 

 

 

2

3

10

32

2

77:12

O

70

3:12

 

 

 

 

2

4

10

39

2

85:12

O

80

3:12

 

 

 

 

2

5

10

46

3

98:12

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

90

3:12

 

 

 

 

4

8

 

10

51

3

 

108:12

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

120 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

15

4:00

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

8:00

F

30

4:00

 

 

 

 

 

3

10

12

1

50:00

M

40

4:00

 

 

 

 

 

3

10

21

2

64:00

N

50

3:36

 

 

 

 

2

3

10

29

2

74:36

O

60

3:36

 

 

 

 

2

5

10

37

2

84:36

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

70

3:36

 

 

 

 

2

7

 

10

45

3

 

99:36

 

80

3:36

 

 

 

 

6

10

10

51

3

 

112:36

 

90

3:36

 

 

 

 

10

14

10

56

3

 

125:36

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

130 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

13

4:24

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

8:24

G

25

4:24

 

 

 

 

 

3

10

11

1

49:24

J

30

4:24

 

 

 

 

 

3

10

15

1

53:24

K

35

4:24

 

 

 

 

 

3

10

20

2

63:24

N

40

4:00

 

 

 

 

2

3

10

24

2

70:00

N

45

4:00

 

 

 

 

2

4

10

29

2

76:00

O

50

4:00

 

 

 

 

2

6

10

33

2

82:00

O

55

4:00

 

 

 

 

2

7

10

38

2

88:00

Z

60

4:00

 

 

 

 

2

9

10

43

3

100:00

Z

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

65

4:00

 

 

 

 

4

11

 

10

48

3

 

109:00

 

70

3:36

 

 

 

2

7

13

10

51

3

119:36

 

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

140 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

11

4:48

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

8:48

G

25

4:48

 

 

 

 

 

3

10

13

1

51:48

K

30

4:48

 

 

 

 

 

3

10

18

1

56:48

L

35

4:24

 

 

 

 

2

4

10

23

2

70:24

N

40

4:24

 

 

 

 

5

7

10

27

2

80:24

N

45

4:24

 

 

 

 

6

9

10

33

2

89:24

O

50

4:00

 

 

 

2

7

11

10

38

2

100:00

O

55

3:36

 

 

2

5

9

14

10

44

3

121:36

Z

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

150 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

9

5:12

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

9:12

F

20

5:12

 

 

 

 

 

3

10

11

1

50:12

J

25

5:12

 

 

 

 

 

3

10

16

1

55:12

K

30

4:48

 

 

 

 

2

4

10

21

2

68:48

M

35

4:48

 

 

 

 

4

7

10

26

2

78:48

N

40

4:24

 

 

 

3

6

9

10

32

2

92:24

N

45

4:00

 

 

3

4

8

12

10

38

2

108:00

Z

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

160 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

7

5:36

 

 

 

 

 

3

NOT TO EXCEED 5 MINUTES

 

 

 

10 MINUTES O2

**

9:36

F

20

5:36

 

 

 

 

 

3

10

13

1

52:36

J

25

5:36

 

 

 

 

 

3

10

19

1

58:36

L

30

5:12

 

 

 

 

5

7

10

23

2

77:12

M

35

4:48

 

 

 

4

6

9

10

29

2

90:48

O

40

4:24

 

 

4

4

8

13

10

36

2

108:24

O

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

170 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

 

Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

15

5:36

 

 

 

 

4

6

NOT TO EXCEED 5 MINUTES

10

20

1

10 MINUTES O2

**

59:36

NO REPET DIVES

30

4:48

 

 

2

3

5

10

10

40

2

88:48

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

45

4:00

2

 

4

6

12

18

 

10

50

2

 

120:00

 

NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

180 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

15

5:36

 

 

 

2

4

6

NOT TO EXCEED 5 MINUTES

10

20

1

10 MINUTES O2

**

61:36

NO REPET DIVES

30

5:12

 

 

3

5

8

12

10

50

2

103:12

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

45

4:24

2

 

5

10

18

26

 

10

50

2

 

145:24

 

NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

190 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

15

6:00

 

 

 

2

5

7

NOT TO EXCEED 5 MINUTES

10

20

1

10 MINUTES O2

**

64:00

NO REPET DIVES

30

4:48

2

 

4

6

10

16

10

50

2

112:48

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

45

4:45

2

 

5

12

20

30

 

10

70

3

 

167:48

 

NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

200 feet

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

15

6:24

 

 

 

3

4

8

NOT TO EXCEED 5 MINUTES

10

20

1

10 MINUTES O2

**

65:24

NO REPET DIVES

30

5:12

2

 

4

7

12

18

10

60

3

132:12

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

45

5:12

2

 

6

14

24

36

 

10

70

3

 

181:12

 

NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

210 FEET

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

 

 

 

Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS

 

BOTTOM TIME (MINS)

TIME TO 1ST STOP

IN WATER Stops (mins) at Depths (feet)

SURFACE INTERVAL

*

IN CHAMBER ON OXYGEN

NO OF AIR BREAKS

ASCENT

DECOMP TIME

(MINS)

REPET GROUP

Breathing Nitrox or Air

80

70

60

50

40

30

50

40

15

6:24

 

 

2

4

5

10

NOT TO EXCEED 5 MINUTES

10

20

1

10 MINUTES O2

**

91:24

NO REPET DIVES

30

5:36

2

 

5

9

14

20

10

60

3

139:24

SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT

45

5:36

2

 

6

16

30

42

 

10

70

3

 

195:36

 

NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES

 

 

DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops

 

 

 

 

IN WATER PHASE

 

CHAMBER PHASE

 

*  Ascent procedures

 

  • Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

 

  • 25 feet per minute to the first stop

 

 

  • Ascent time between stops & from 30 feet to surface is ONE MINUTE

 

  • Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

 

  • Decompression time as specified begins on arrival at the stop depth

 

  • On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

 

  • Do not include ascent time as part of stop times

 

  • Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks

 

  • Delays at earlier stops are not to be compensated for at later stops

 

 

 

 

 

 

*50/50 Nitrox Switch

 

ASCENT FROM 40 FEET

 

  • Switch to 50/50 Nitrox at 100 feet during ascent

 

  • ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

 

  • Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

 

 

  • On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

 

  • Diver to breath Oxygen during the entire ascent.

 

  • Umbilical flush is to be formally logged

 

 

 

 

 

LOSS OF NITROX

 

* REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

 

  • If there is a loss of Nitrox, switch diver to Air and decompress according to table

 

  • Previous bottom time must have been such that divers repet group was no greater than ‘O’

 

 

 

  • Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

 

 

 

  • Refer to Table 1-12 for new RGD at the end of the surface interval

 

 

 

  • Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)

 

 

220 Feet

 

 

 

 

 

* Surface Interval

 

 

 

  • Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber

 

 

 

 

 

 

NOTE:  On any occasion that the Depth  or Bottom Time falls within 2 feet or 2 minutes of a Depth  or Time increment of a schedule use the next Deeper and/or next longer schedule.

 

 

 

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