DSO planning, Casualty control, diving operations Flashcards

1
Q

Data required for all diving Operations 6-4.4

A

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

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2
Q

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

A

2 point, Dynamic position class 2/3

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3
Q

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

A

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

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4
Q

Tending personnel shall guard against

A

Sunburn, Hypothermia/frostbite, Heat exhaustion

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5
Q

Mk 21 SSDS current limitations

A

1.5 knots without difficulty, 2.5 knots with extra weight

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6
Q

Scuba diver is severely handicapped in currents greater than

A

1.0 knot

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7
Q

four main types of air diving equipment

A

Scuba, MK20, MK21, EXO BR

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8
Q

Factors in selecting dive medium

A

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

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9
Q

Depth limits shall not be exceeded without approval from

A

CNO

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10
Q

Scuba depth limits

A

130 normal, 190 CO/OIC approval

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11
Q

Scuba cylinder SCF to go deeper than 100

A

100SCF

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12
Q

DMO required on the side for all Air dives deeper than

A

190FSW

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13
Q

SSDS diving systems

A

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

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14
Q

Review the following before diving

A

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

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15
Q

MK 21/ km 37 limits /EGS requirements

A

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

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16
Q

EGS length for enclosed space

A

50-150’

17
Q

EGS relief valve setting

A

180 +/- 5

18
Q

Mk 20 4 assemblies

A

FFM, Comms, Eqp harness, Umbilical assembly

19
Q

Mk 20 depth limit

A

60

20
Q

EGS topside Over Bottom

A

150 psig

21
Q

MK 20 mod 0 flow @ over bottom requirements

A

1.4 acfm, 90psig

22
Q

EXO flow and O/B requirements

A

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

23
Q

EXO 130-190 FSW OB requirements

A

165-225 PSIG

24
Q

SSD systems must have a _____ and ___ air system

A

Primary, secondary

25
Q

3 line pulls not answered immediately

A

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

26
Q

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

A

twice, GFE, hourly

27
Q

Advantages of SCUBA

A
Rapid deployment
Mobility
Excellent horiz/vertical movement
Portability
Minimum support req
Minimum borrow disturbances
28
Q

Dis-Advantages of SCUBA

A

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

29
Q

Advantages of MK20

A

Unlimited air supply
Hood horizontal mobility
Voice/line pull comms

30
Q

Advantages of KM-37/MK-21

A
Unlimited air supply
Head protection
Good horizontal mobility
Voice/line pull comms
Fast deployment
31
Q

Five basic criteria for air supplied to the diver

A

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
Q

When can a Standby Diver be deployed as a working diver

A

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