Over 25%

Over 35%

Over 40%

Over 20%

Within 24 hours

Within 6 hours

Within 12 hours

Immediately

12 hours for immediate treatment

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

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

24 hours for immediate treatment

30 bar

10 bar

40 bar

20 bar

Maintain depth and check for leaks

Inform Superintendent

Check for leaks

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

Ensure that all fittings in use are similar

Connect hoses, pressure lines and check for leaks

Ensure you have enough Teflon tape to seal all threads

80m³

120m³

60m³

90m³

73.5 KHz

37.5 KHz

55.5 KHz

40.0 KHz

50m

18m

10m

25m

5 years

6 months

yearly

2 years

3 months

6 months

yearly

9 months

24 hours before use

12 hours before use

7 days before use

The Life Support Supervisor

Divers in the DDC

LST

The Supervisor

3 years

12 months

2 years

6 months

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

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

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