DSO planning, Casualty control, diving operations Flashcards Preview

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Flashcards in DSO planning, Casualty control, diving operations Deck (32):
1

Data required for all diving Operations 6-4.4

Surface conditions, Underwater conditions, Equipment and personnel resources, Assistance in emergencies

2

Any vessel used for dive ops shall be secured by a _____ moor or _____ system

2 point, Dynamic position class 2/3

3

The exception to diving on a vessel not in a 2 point moor or utilizing DP system is

Moored alongside a pier or another vessel properly anchored, diving during open ocean transits cannot moor due to depth.

4

Tending personnel shall guard against

Sunburn, Hypothermia/frostbite, Heat exhaustion

5

Mk 21 SSDS current limitations

1.5 knots without difficulty, 2.5 knots with extra weight

6

Scuba diver is severely handicapped in currents greater than

1.0 knot

7

four main types of air diving equipment

Scuba, MK20, MK21, EXO BR

8

Factors in selecting dive medium

Duration and depth, Type of work, Environmental conditions, Time constraints

9

Depth limits shall not be exceeded without approval from

CNO

10

Scuba depth limits

130 normal, 190 CO/OIC approval

11

Scuba cylinder SCF to go deeper than 100

100SCF

12

DMO required on the side for all Air dives deeper than

190FSW

13

SSDS diving systems

Lightweight - MK20, Deep Sea - Mk21/KM-37

14

Review the following before diving

Diving safety and planning checklist, Ship repair safety checklist, SSD predives, support control of operations.

15

MK 21/ km 37 limits /EGS requirements

190 fsw, deeper than 60 EGS and when diving enclosed spaces

16

EGS length for enclosed space

50-150'

17

EGS relief valve setting

180 +/- 5

18

Mk 20 4 assemblies

FFM, Comms, Eqp harness, Umbilical assembly

19

Mk 20 depth limit

60

20

EGS topside Over Bottom

150 psig

21

MK 20 mod 0 flow @ over bottom requirements

1.4 acfm, 90psig

22

EXO flow and O/B requirements

less than 130' -135-165 PSIG, 60' - 90psig

23

EXO 130-190 FSW OB requirements

165-225 PSIG

24

SSD systems must have a _____ and ___ air system

Primary, secondary

25

3 line pulls not answered immediately

Diver to tender 4,4-4-4/ tender to diver 4

26

Ballast tanks must be flushed ___ and certified by a ___ and checked ___

twice, GFE, hourly

27

Advantages of SCUBA

Rapid deployment
Mobility
Excellent horiz/vertical movement
Portability
Minimum support req
Minimum borrow disturbances

28

Dis-Advantages of SCUBA

Limited endurance
Limited physical protection
Influenced by current
Lack of voice comms

29

Advantages of MK20

Unlimited air supply
Hood horizontal mobility
Voice/line pull comms

30

Advantages of KM-37/MK-21

Unlimited air supply
Head protection
Good horizontal mobility
Voice/line pull comms
Fast deployment

31

Five basic criteria for air supplied to the diver

Air shall conform to purity standards

Sufficient air flow to diver

Adequate over-bottom pressure

Adequate air supply

Secondary air supply shall be available for ssds

32

When can a Standby Diver be deployed as a working diver

SSDS no D dives less then 60'

Same job and location

Work area shall be determined free of hazards

If in ballasts or confined space both divers tended by a third outside the space

Standby shall remain on deck when diving salvage ops