Over 35%

Over 40%

Over 20%

Over 25%

Within 12 hours

Immediately

Within 6 hours

Within 24 hours

Within 20 minutes travel for 4 hours and within 2 hours travel for 8 hours

24 hours for immediate treatment

12 hours for immediate treatment

Within 2 hours travel for 8 hours and within 6 hours travel for 4 hours

20 bar

30 bar

10 bar

40 bar

Maintain depth but ignore the leaks as it is within acceptable limits

Check for leaks

Inform Superintendent

Maintain depth and check for leaks

Connect hoses, pressure lines and check for leaks

Ensure you have enough Teflon tape to seal all threads

Ensure that all fittings in use are similar

80m³

90m³

120m³

60m³

73.5 KHz

40.0 KHz

37.5 KHz

55.5 KHz

25m

50m

18m

10m

2 years

yearly

5 years

6 months

9 months

yearly

6 months

3 months

12 hours before use

24 hours before use

7 days before use

LST

Divers in the DDC

The Supervisor

The Life Support Supervisor

12 months

3 years

6 months

2 years

Put the divers on BIBS then add the 2% for at least one full minute

Try and communicate with the divers before adding gas. If it is confirmed, add the 20% for at least one full minute then put the divers on BIBS

The 8% for at least one full minute then put the divers on BIBS