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Air Diving Supervisors QUESTIONS > Air Supervisors Regulations > Flashcards

Air Supervisors Regulations Flashcards

1
Q
  1. An air diver is on his wet stop prior to surdO2, a red alert occurs would you?
    a) bring him out and give him a therapeutic treatment
    b) continue dive until red alert status ceases
    c) carry out wet stops in DDC
    d) double wet stop times in DDC then normal DCI treatment
A

a) bring him out and give him a therapeutic treatment

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2
Q
  1. What is SI 2776-1997?
    a) U.K. diving regs 1997
    b) pipelines act 1997
    c) continental shelf act 1997
    d) petroleum and submarine pipelines act 1997
A

a) U.K. diving regs 1997

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3
Q
  1. How often should cylinders not used underwater, be overpressure tested?
    a)10 yearly
    b) 5 yearly
    c) 2 yearly
    d) 3 yearly
A

b) 5 yearly

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4
Q
  1. Gas cylinder or quads used in diving ops must have marked on them?
    a) weight
    b) wall thickness
    c) colour and chemical formula of content
    d) year of manufacture
A

c) colour and chemical formula of content

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5
Q
  1. Diving plant and diving equipment test certificates are normally in force for?
    a) 3 months
    b) 6 months
    c) 1 year
    d) 2 years
A

b) 6 months

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6
Q
  1. IMCA recommends periodic internal examination of bailout bottles for corrosion ?
    a) every 3 months
    b) every 6 months
    c) every year
    d) as often as thought necessary
A

b) every 6 months

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7
Q
  1. DMAC recommends not flying intercontinental after a Heliox dive for at least?
    a) 4h
    b) 12h
    c) 24h
    d) 48h
A

c) 24h

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8
Q
  1. Depth gauge should be tested every?
    a) 3 months
    b) 12 months
    c) 6 months
    d) 24 months
A

c) 6 months ‐ IMCA @ 0.25% Accuracy

HSE ‐ 3 Months

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9
Q
  1. How many standby divers are required for four divers in the water?
    a) 3
    b) 2
    c) 4
    d) 1
A

b) 2

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10
Q
  1. A copy of the project diving plan must supplied on request to? U.K. regs
    a) a radio operator
    b) IMCA
    c) a HSE inspector
    d) the OIM
A

c) HSE inspector

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11
Q
  1. Air samples should be taken undear BS EN 12021 for a breathing air compressor analysed every?

a) month
b) 4 months
c) 6 months
d) 12 months

A

c) 6 months - IMCA

HSE: BS EN 12021: UK REGS= 3 months

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12
Q
  1. Multi legged slings should generally be used with the legs at less than what angle to each other, when lifting load?
    a) 90°
    b) 120°
    c) 45°
    d) 180°
A

a) 90°

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13
Q
  1. Who must serious offshore incidents be reported to? U.K. regs
    a) HSE
    b) company safety officer
    c) operations manager
    d) project manager
A

a) HSE

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14
Q
  1. Any flexible hoses connected to O2 cylinder should be?
    a) HP rubber hoses
    b) MP hoses
    c) O2 approved hoses
    d) LP hoses
A

c) O2 approved hoses

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15
Q
  1. A diving umbilical require pressure testing at MWP every?
    a) 6 months
    b) 12 months
    c) 24 months
    d) 60 months
A

c) 24 months

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16
Q
  1. Static load testing of man-riding equipment takes place every?
    a) 3 months
    b) 1 year
    c) 6 months
    d) 2 years
A

c) 6 months

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17
Q
  1. U.K. territorial waters cover up to how far from the low water line? U.K. regs
    a) 6 nm
    b) 8 nm
    c) 12 nm
    d) 100 nm
A

c) 12 nm

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18
Q
  1. Risk assessment must be carried out prior to commencing diving under ?
    U.K. regs
    a) diving ops at work regulations 1990
    b) SI 2776/1997
    c) management of HSE at work regs 2004
    d) both b and c
A

d) both b and c

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19
Q
  1. Nitrox gas cylinders are usually coloured ?
    a) all blue
    b) grey body/black top
    c) grey body/black and white quarter top
    d) pink
A

c) grey body/black and white quarter top

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20
Q
  1. Minimum compressed air required for surface orientated air diving ?
    a) sufficient air to complete the dive with a reserve for deco if required
    b) sufficient air to complete the dive to work depth only
    c) sufficient air for 2 emergency dives to the full intended depth as a reserve
    d) sufficient gas to supply 2 divers at the intended working depth plus reserve
A

c) sufficient air for 2 emergency dives to the full intended depth as a reserve

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21
Q
  1. A minimum compressed air required for DDC surface Orientated ?
    a) sufficient air to pressurise the main lock to maximum possible work depth plus sufficient air for 3 surface deco cycles
    b) sufficient air to pressurise both DDC locks to the maximum treatment depth
    c) sufficient compressed air to complete 3 surface deco cycles and an emergency treatment.
    d) sufficient compressed air to pressurise both DDC locks to the maximum possible treatment depth, plus sufficient air for 3 complete surface deco.
A

d) sufficient compressed air to pressurise both DDC locks to the maximum possible treatment depth, plus sufficient air for 3 complete surface deco.

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22
Q
  1. Compressed air used for diving must comply with? U.K. regs
    a) DMAC 22
    b) IMCA 038
    c) BS 1319
    d) BS EN 12021
A

d) BS EN 12021

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23
Q
  1. The legal minimum dive crew for air diving offshore U.K. is?
    a) 3
    b) 4
    c) 5
    d) 6
A

c) 5

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24
Q
  1. Under IMCA international ACoPs, what’s the max depth and bottom time for surface supplied mixed gas wet bell dive?
    a) 50msw 30min
    b) 50msw 25min
    c) 75msw 30min
    d) 85msw 30min
A

c) 75msw 30min

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25
Q
  1. Define air purity standards?
A

Is BS EN 12021

Carbon monoxide CO - 5ppm
Carbon dioxide CO2 - 500ppm
Water - 25 to 50mg/m3
Oil - 0.5mg/m3

UK The CO is 3ppm

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26
Q
  1. What’s the minimum quantity of air and O2 required for offshore?
A
  • air to be in containers or come from 2 independent dedicated sources. Rig air not allowed.
  • 1 compression of twin lock chamber to maximum treatment depth 50msw
  • 2 emergency dives to full intended working depth
  • 3 complete surface decompression cycles ( surDO2)
  • PLUS 90m3 of O2 reserved for therapeutic use only
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27
Q
  1. What’s IMCA, DMAC, SOLAS, IMO, RIDDOR standards for?
A

IMCA - Internacional marine contractors association
DMAC - Diving medical advisory committee
IMO - International maritime organization
SOLAS - Safety offshore life at sea
RIDDOR - reporting injuries, diseases and dangerous occurrences regulations 1995

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28
Q
  1. State all the statutory instruments = laws of HSE at work act 1974.
A
  • SI 2002 - 1587: the merchant shipping (diving safety) regulations 2002
  • SI 1976 - 923: submarine pipelines ( diving ops) regulations
  • SI 1997 - 2776: the management of HSE at work regulations 1999 (for risk assessments)
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29
Q
  1. State the standard for Air purity and colour coding of gas cylinders .
A
  • BS EN 12021:1999 standard for Air purity
    ( oil 0.5mg/m3. CO 3ppm. CO2 500ppm. Water 25-50 mg/m3 )
  • BS EN 1089-3-2004 colour coding of gas cylinders
    Should be marked chemical formula and gas contents.
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30
Q
  1. What are the states of SI 2776/1997 diving at work regulations and approved code of practice ( ACoP) for “commercial diving projects offshore”?
A

a) diving ops should be carried out from a “safe and suitable place”
b) diving ops are deemed to be taking place when: the diver enters the water or any other liquid or chamber pressure that exceeds 100mb (1msw).
c) deco chamber required on all offshore/pipeline diving jobs.
d) deco chamber must be twin lock with enough room for 2 divers to lie down in comfort.
e) permission to platform within 500m range, wellhead and pipelines.
f) minimum divers qualification to work offshore.
g) maximum depth for surface diving 50msw
h) oxygen reduce at source to no more than 40 bar ( Norway - as low as possible)

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31
Q
  1. What’s the minimum required team for surface air, mixed gas and saturation diving?
A
  • surface diving: 5
  • surface mixed gas diving: 6
  • saturation diving: 9
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32
Q
  1. State colour code for gas cylinders.
A
  • helium: Brown
  • oxygen: white
  • nitrogen: black
  • carbon dioxide: grey
  • argon: dark blue
  • calibration gas: pink
  • inert gases: should be bright green

NOTE: mixture of these gases are colour code in quarters sections on the shoulder of the cylinder.

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33
Q
  1. What’s state IMCA D018 plant and equipment?
A

All plant and equipment used in a diving ops must be tested and examined 6 monthly by a competent person and certificate issue. The originals in the contractors office and a copy offshore.

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34
Q
  1. What’s the period for testing diving chambers and bells?
A
  • 6 monthly visual
  • 2.5 years working pressure leak test (1% max in 24h)
  • 5 years overpressure test
    View ports
  • 6 monthly visual
  • 2.5 years leak test
  • 5 year overpressure leak
  • 10 year renewal
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35
Q
  1. What’s the period for testing umbilicals and pipework?
A
  • 6 monthly function
  • 2 year MWP test and leak test
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36
Q
  1. What’s the period for testing man-riding winches?
A
  • 6 monthly Visual examination for damage/corrosion. Function test of system at working weight of the basket/bell.
  • independent 1year static load test on each brake system (primary and secondary) at 1.25x SWL. Cut back beyond first sheave and destruction test

Main wire should be rated 8:1. Cross haul 8:1

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37
Q
  1. What’s the period for testing lifting bags?
A
  • 6 monthly visual test
  • yearly load test swl
  • PRV opens at 2 Psi above ambient
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38
Q
  1. What’s the period for testing compressors?
A
  • 6 monthly test flow and purity BS EN 12021
    Note: UK 3 monthly
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39
Q
  1. What’s the period for testing cylinders NOT used u/w?
A
  • 6 monthly external visual
  • 2.5 yearly leak test MWP
  • 5 yearly leak test MWP if required MWP x 1.1
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40
Q
  1. What’s the period for testing cylinders used underwater?
A
  • 6 monthly external visual ( plus visual internal inspection)
  • 2.5 yearly internal/external visual, gas leak MWP (+ hydraulic test if required)
  • 5 yearly (as 2 years plus) 1.5 x MWP hydraulic test.
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41
Q

It is compulsory to have a surface compression chamber on site on offshore
installations for diving at what depth?
a) 10 msw
c) 30 ft
b) 5 msw
d) all offshore diving operations

A

d

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42
Q

In both UK and Norwegian legislation, depth gauges must be re-certified?
a) every 3 months
b) every 12 months
c) every 6 months
d) every 24 months

A

B - UK and Norway EVERY 12 months

IMCA - every 6 months

Note: if doesn’t specify anything in the question, go for the IMCA answer.

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43
Q

UK: Diving plant and equipment should be checked before a dive. Maximum
time between checks and dive is?
a) 4 hours
b) 6 hours
c) 5 hours
d) 12 hours

A

b Check where stated

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44
Q

Gas purity regulations state that compressor gas samples must be analysed every
six month. Which regulations?
a) SI 399
b) BS 4001 ( suppressed by BS EN 12021)
c) BS 23
d) BS 1780

A

b

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45
Q

Diving regulations states that a diver must have heat provided in the bell and in
the water beyond what depth?
a) 1.5 m
b) 40 m
c) 50 m
d) 150 m

A

c

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46
Q

Divers gas must be heated beyond what depth?
a) 40 m
b) 50 m
c) 150 m
d) 160 m

A

c

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47
Q

UK and Norway: Maximum level of O2 permitted in chambers is?
a) 23%
b) 25%
c) 24%
d) 50%

A

a

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48
Q

What is the minimum quantity of O2 recommended offshore for Treatment is

a) 60 m3
b) 90 m3
c) 80 m3
d) 120 m3

A

b

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49
Q

When should you not use PTFE thread tape.

A

Industry and HSE both stipulate that PTFE Tape should not be used on O2
systems
(nb DVIS 3 – Production of Phosgene Gas is nonsense)

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50
Q

Name the current diving regulations.

A

Diving at Work Regulations 1997 SI 2776

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51
Q

Cylinders taken underwater must be given a hydraulic overpressure test to 1.5 x MWP
every:
a 5 years
b 1 year
c 4 years
d 6 months

A

A

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52
Q

Plant and equipment, (other than cylinders and pressure vessels) used in diving
operations, must be tested by a competent person every:
a 6 months
b 2 months
c 3 months
d year

A

a

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53
Q

What is the maximum allowable depth breathing air, in a normal diving operation?
a 60 msw
b 45 msw
c 50 msw
d 55 msw

A

c

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54
Q

Beyond what depth is it compulsory to use a diving bell?
a 50 msw
b 200 fsw
c 45 msw
d 60 msw

A

a

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55
Q

The difference in quad makings between Air and Nitrox is?
a They have different colour markings
b There is no difference, analysis is the only way of telling apart
c Air marked “21%” and Nitrox marked “Nitrox”
d Air marked “ AIR DIVING QUALITY” and Nitrox marked
“%OXYGEN and %NITROGEN DIVING QUALITY”

A

d

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56
Q

Gauges which directly affect the diver, (i.e., depth gauge, gas supply, pressure
gauge) must be tested every:
a 3 months
b 6 months
c 9 months
d 1 month

A

B - IMCA 6 months

U.K. and Norway: 12 months

Note: if doesn’t specify anything in the question, go for the IMCA answer.

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57
Q

The Master of a vessel, or OIM, has the authority to:
a Commence a dive
b Commence and terminate a dive
c Terminate a dive only
d No authority at all

A

c

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58
Q

Other than test pressures, WP, FV, test date, etc., what information must be
displayed on a cylinder containing gas?
a Type and per cent of gas inside
b Per cent of gasses
c Proper colour coded
d Proper colour code, chemical formula, percentages of gases contained.

A

d

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59
Q

A wet bell or basket used for transporting a diver to the worksite must meet
the following minimum requirements:
a Be capable of carrying two fully dressed divers and safety chain fitted
b Have an emergency gas supply fitted
c Be fitted with overhead protection and used with proper lifting gear
d All of the above

A

d

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60
Q

All plant and equipment must be inspected by a competent person:
a 24 hours before diving commences
b 12 hours before diving commences
c immediately before use
d 7 days before diving commences

A

c

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61
Q

As a reportable disease, decompression sickness must be reported, in writing,
to the Health and Safety Executive:
a Within 3 months
b Within 3 days
c Within 28 days
d Within 10 days

A

d

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62
Q

The Supervisor should not “hand over” to his relief without:
a Fully brief him of the dive
b Making him a cup of coffee
c Signing his personal log book
d Fully briefing his relief and signing over his command in the dive
log book.

A

d

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63
Q

Prior to commencement of any diving operation it is the Supervisor’s duty to:
a Fully brief his dive team
b Check all plant and equipment
c Check weather forecast, diver’s logs, certificates, gas supplies
d Check shipping movements, underwater hazards
e All of the above and more

A

e

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64
Q

During any diving operation you must have at least:
a One gas supply for the diver
b Two supplies from the same source for the diver
c Two independent supplies
d Three independent supplies, two for the diver, one for the standby
diver

A

d

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65
Q

What is the minimum qualification for a diver to work offshore:
a Part I
b Part II
c Part III
d Part IV

A

a

66
Q

hyperbaric doctor who visits a diving site due to an accident:

a Has legal responsibility
b Advises the supervisor only
c Has control of the treatment table
d Relieves the supervisor on the panel and enters details in the dive log.

A

b

67
Q

A diving supervisor can also dive if:
a He has an in date medical
b He hands over responsibility to the standby diver
c He has in date medical and hands over to another supervisor who has a letter of appointment and signs hand over in the log
d Supervisor is not allowed to dive

A

c

68
Q

The minimum amount of compressed air required for surface oriented air
diving is:
a Sufficient air to complete the dive with a reserve for decompression if required
b Sufficient air to complete the dive to work depth only
c Sufficient air for two emergency dives to the full intended depth as a reserve
d Sufficient gas to supply two divers at the intended working depth plus reserve

A

c

69
Q

The minimum amount of compressed air required for surface oriented diving
with a DDC is:
a Sufficient air to pressurise the main lock to maximum possible work depth plus sufficient air for three surface decompression cycles
b Sufficient air to pressurise both DDC locks to maximum treatment depth
c Sufficient compressed air to complete three surface decompression cycles and an emergency treatment
d Sufficient compressed air to pressurise both DDC locks to the maximum possible treatment depth, plus sufficient air for three complete surface decompressions

A

d

70
Q

Compressed air used for diving must comply with:
a SI399/966
b AODC
c BS1319
d BS4001 ( suppressed by BS EN 12021)

A

d

71
Q

HSE Diving Information Sheet recommends that oxygen quad pressure be
reduced at source to:
a 20 bar
b 35 bar
c 40 bar
d 50 bar

A

c

72
Q

Who must, under UK regulations, inform the HSE of any Type I or Type II
DCS?
a Dive Supervisor
b Diving Contractor
c OIM
d Client

A

b

73
Q

In the UK an air sample must be taken from a compressor and analysed every:
a Month
b 3 months
c 6 months
d 12 months

A

B - in the U.K. 3 months

IMCA : Every 6 months

Note: if doesn’t specify anything in the question, go for the IMCA answer.

74
Q

The maximum allowable CO in an air supply for diving in the UK is:
a 1 ppm
b 3 ppm
c 40 ppm
d 500 ppm

A

b

75
Q

In the UK, umbilicals must be tested to their maximum working pressure
every:
a 3 months
b 6 months
c 1 year
d 2 years

A

d

76
Q

What particulars must be entered in the diving operations record?
a Type of diving suit being used
b Seawater temperature
c Type of breathing apparatus being used
d Vessel master’s name

A

c

77
Q

For safety purposes, what minimum percentage of oxygen in a mix is handled
as pure oxygen?
a 25%
b 100%
c 21%
d 50%

A

a

78
Q

Who is responsible for ensuring a risk assessment is carried out prior to the
diving project commencing?
a HSE
b Dive Supervisor
c Offshore Manager
d Diving Contractor

A

d

79
Q

Who as a minimum in the dive team should be qualified to diver medic
standard?
a Dive Supervisor
b One dive team member, other than the diver in the water
c Ships Medic
d Life Support Supervisor

A

b

80
Q

In the UK who is responsible for enforcing the Diving Regulations?
a. AODC
b. HSE
c. IMCA
d. DOE

A

b

81
Q

IMCA and HSE recommend that oxygen be reduced at source to:
a. 30 Bar
b. 35 Bar
c. 40 Bar
d. 60 Bar

A

c

82
Q

Only the minimum amount of gas acceptable for safe diving is onboard, do
you?
a Keep quiet. you can cover it in the gas figures
b The divers reclaim is working so it’ll be okay
c Diving must cease until gas stocks are replenished
d The job should finish soon so continue

A

c

83
Q

Regulations state that depth gauges are to be tested and certified every:
a. 3 months
b. 6 months
c. 12 months
d. 24 months

A

IMCA: 6 months

U.K. and Norway 12 months

Note: if doesn’t specify anything in the question, go for the IMCA answer.

84
Q

Who has final responsibility for all checks on diving plant and equipment prior
to the commencement of a dive:
a. Bellman
b. Dive Supervisor
c. Standby Diver
d. The Surface Crew

A

b

85
Q

A supervisor needs to have been a qualified diver unless:
a. He was supervising prior to 1984
b. He has successfully passed all the relevant IMCA examinations
c. He was supervising for a 2 year period prior to 1981
d. He has a letter of appointment from a diving contractor

A

c

86
Q

Bailout taken U/W must be (1) tested and (2) internally inspected every:
(1) (2)
a. 6 months a. 3 months
b. 5 years b. 30 months
c. 10 years c. 12 months
d. 12 years d. 24 months

A

a and b

87
Q

Recording during diving operations should be kept:
a. For a minimum of 8 hours
b. For a minimum of 12 hours
c. For a minimum of 24 hours
d. For a minimum of 48 hours

A

IMCA 24h

U.K. 48h

Note: if doesn’t specify anything in the question, go for the IMCA answer.

88
Q

Closed bell diving techniques should be used when diving deeper than:
a. 30 metres
b. 50 metres
c. 60 metres
d. 75 metres

A

b

89
Q

Diving chambers and bells must have a pressure leak test every:
a. 30 months
b. 6 months
c. 12 months
d. 24 months

A

a

90
Q

Who has the main responsibility for ensuring that a diving project is safely managed:
a. Diving Supervisor
b. HSE
c. The Operator
d. The Diving Contractor

A

d

91
Q

A Dive Supervisor is supervising a job he considers unsafe, does he?
a Stop the job until he feels it safe to continue
b Continue as the Dive Superintendent says to
c Continue as the job has already been risk assessed
d Continue after asking the divers if they want to

A

a

92
Q

The divers suffer some bad burns from a previously unspecified seabed chemical, should?
a It be ignored, it’s just an everyday hazard of the job
b The job is behind schedule so best ignored
c The client should supply details and the job be Re-Risk Assessed
d Dress the wounds and continue using PPE

A

c

93
Q

What is SI 1997 2776?

1) UK Diving regulations 1997.
2) Continental Shelf Act 1997.
3) Pipeline Act 1997.
4) Petroleum & Submarine pipelines Act 1997.

A

1) UK Diving regulations 1997.

94
Q

No man-riding lifting gear-forming part of the diving plant must be tested to 1.5x max SWL….
A) every 6 months
B) every year
C) every 2 years
D) every 5 years

A

B) every year

95
Q

A DP DSV is on a 4 point mooring 6 miles offshore in U.K. waters salvaging a helicopter at 58 msw depth. Which diving regulation/ACoPs covers this operation and why?

A) inshore diving regulations because only 6 miles offshore
B) offshore diving regulations because oilfield type of work
C) offshore diving regulations because DP DSV
D) offshore diving regulations because 58msw operations

A

D) offshore diving regulations because 58msw operations

96
Q

A DSV is on DP in a Scottish loch. Water depth is 200msw. The divers are at 25msw. Which diving regulations/ACoPs covers this operation and why?

A) inshore diving regulations because 25msw working depth
B) inshore diving regulations because location inside 12 miles limit
C) offshore diving regulations because the max possible depth is 200msw
D) offshore diving regulations because vessel on DP

A

D) offshore diving regulations because vessel on DP

97
Q

An air diver-training course is using a close mini-bell in a flooded Yorkshire mineshaft at 45msw. Which diving regulation/ACoPs covers this operation and why?

A) inshore diving regulation because less than 50msw and using air.
B) inshore diving regulation because location not offshore
C) media diving regulation because BBC are making a film of course
D) offshore diving regulation because close bell being used

A

D) offshore diving regulation because close bell being used

98
Q

What’s the recommended minimum breaking strain of a bell winch wire?
a) 1.5 x the working load
b) 1.25 x the working load
c) 1.1 x the working load
d) 8 x the working load

A

d) 8 x the working load

99
Q

The lowering system for the diving bells should be controlled by?
a) the drive system of the winch
b) an air motor
c) the secondary break tension spring
d) a pawl or ratchet mechanism

A

a) the drive system of the winch

100
Q

The upper limit for Co2 in breathing air under BS EN 12021 is?
a) 1 mg/m3
b) 50ml.m3
c) 0.05 ml.m3
d) 500 ml.m3

A

d) 500 ml.m3

101
Q

When using a cross-haul wire on a bell, the wire must be?

a) 1.5 x swl of main wire
b) sufficient strength to lift bell to interface
c) 8:1 safety factor
d) 6.5 x swl of main wire

A

c) 8:1 safety factor

102
Q

When should diving plant be examined before diving?
a) 24h before
b) before diving commences
c) 30 days before
d) within 6h before diving

A

b) before diving commences

103
Q

UK territorial waters reach how far from the low water line?
a) 7 nautical miles
b) 12 nautical miles
c) 30 nautical miles
d) 4 nautical miles

A

b) 12 nautical miles

104
Q

Diving plant electrical equipment should be retested every?
a) 3 months
b) 6 months
c) 2 years
d) 60 months

A

b) 6 months

105
Q

Gas pipe work on a diving system needs pressure testing at max W.P. Every…?
a) 6 months
b) 12 months
c) 24 months
d) 60 months

A

c) 24 months

106
Q

Bell hydraulic winches should be tested ?
a) primary brake dynamically, secondary brake statically
b) primary brake dynamically, secondary brake dynamically
c) primary brake statically, secondary brake dynamically
d) primary brake statically, secondary brake statically

A

a) primary brake dynamically, secondary brake statically

107
Q

Under BS EN 12021 what is the max limit for CO in a breathing air?
a) 1ml.m3
b) 500ml.m3
c) 3ml.m3
d) 15ml.m3

A

c) 3ml.m3

108
Q

Hydraulic power units used for man riding winches should have there hydraulic fluid analyzed or replaced every….?
a) 6 months
b) 18 months
c) 15 months
d) 12 months

A

d) 12 months

109
Q

All chambers and bells will have a MWP leak test every?
a) 2 years
b) 6 months
c) 2 1/2 years
d) 4 years

A

c) 2 1/2 years

110
Q

Umbilicals are tested every 2 years at?
a) normal working pressure
b) max rate working pressure
c) 1.1 times mwp
d) 1.25 times mwp

A

b) max rate working pressure

111
Q

Hydraulic overpressure retesting is applied to bailout cylinders used underwater how often ?
a) 6 months
b) 2 yearly
c) 5 yearly
d) 10 yearly

A

c) 5 yearly

112
Q

Diving helmets are functioning tested every?
a) 6 months
b) 3 months
c) 3 months gas/ air 6 months comms
d) 1 year

A

a) 6 months

113
Q

A diving project could finish?
a) after the last man leaves the water or chamber
b) when the client declarer complete
c) after the bend watch period
d) when the supervisor runs out of tea

A

c) after the bend watch period

114
Q

With regard to record keeping, what must a diver do?

A

keep for 2 years
update daily logbook

115
Q

What defines “ the contractor”?

A

Is the company in overall control of the diving operations. Defines a management structure in writing.

116
Q

What must a client inform the contractor of?

A

-details of risk assessments of any possible substance likely to be encountered by the diving team that could be a hazard to their health
- drill cuttings on the sea bed
- contaminated effluent
- chemicals and petroleum products
- hydrogen sulphide
- info about any impressed current system
- radiations sources, details and risk assessments
- keep divings supervisor informed of any changes of may affect the diving ops

117
Q

What information should be in the dive plan?

A
  • Risk management process, JSAs, toolbox, management and responsibilities of the relevant personnel
  • national and international and flag state standards, regulations, guidelines
  • health and environmental requirements of the country
  • health and security precautions
  • Project safety management system (SMS)
  • personnel roles and responsibilities
  • diving crew familiarization plan and sign off sheets
  • weather working policy
  • diving operating maintenance procedures
  • mob and demob plans
  • detailed step by step work procedures
    -SIMOPS procedures
  • contractors manuals and docs
  • code, standards and reference documents
  • accident/ near-miss investigations procedures
  • deployment of divers and standby divers
  • equipment tool and materials to be used and their deployment
  • equipment audit report and certies
  • permit to work system
  • lift plans
  • minimum gas/breathing mixtures requirements
  • any locations specific hazards identified by the client
  • suitable emergency and contingency plans
118
Q

Whose responsibility is to ensure divers have indate medicals, diver training and first aid certificate?
a) the superintendent
b) the client
c) the diving supervisor
d) the ops manager

A

c) the diving supervisor

119
Q

Under the U.K. ACoP for offshore diving, how long should recorded communications be retained for ?
a) 48h
b) 24h
c) 12h
d) not necessary

A

a) 48h

Remember: 24h IMCA
48h U.K.

120
Q

According to ACoPs, a dive basket used to deploy a standby diver should be?

A) large enough to carry 2 divers in an un-cramped condition
B) fitted with 3 sets of emergency breathing equipment
C) fitted with a rigid ladder which extends 2m below the skip
D) fitted with emergency telephone

A

A) large enough to carry 2 divers in an un-cramped condition

121
Q

Do any of following come under the SI 2776/1997?
a) clean rooms
b) submersible craft
c) exposure less than 100mb
d) none of the above

A

d) none of the above

122
Q

How long should a voice recordings should be kept assuming no incident occurred during diving ops ? ( EXAM )
a) 8h
b) 12h
c) 24h
d) 48h

A

c) 24h - IMCA reg
d) 48h - UK reg

123
Q

The diving work regulation 1997 would apply to?
a) the care of patients in hospital
b) emergency treatment in the ambulance
c) a patient in a transfer under pressure DDC in a helicopter
d) none of the above

A

d) none of the above

124
Q

How long must diving records (logs) be kept for, from a date of the last entry?

a) 2 years
b) 5 years
c) 1 year
d) end of the contract

A

a) 2 years

125
Q

Any gas mixture containing more than what percent oxygen should be handled as for pure oxygen?

a) 21%
b) 25%
c) 50%
d) 100%

A

b) 25%

126
Q

Who has the main responsibility to ensure a diving project complies with SI 2776/1997?
a) the client
b) the license holder
c) the senior dive supervisor or supt
d) the diving contractor

A

d) the diving contractor

127
Q

Man riding winches should be tested 6 monthly to what value of the working load?
a) 1.5 times
b) normal working load
c) 1.1 times
d) 1.25 times

A

b) normal working load

128
Q

Under what circumstances could Bell winch brakes be tested together on the same test?
a) if there are air on the air winch
b) if they are hydraulic over centre valve operated
c) under no circumstances
d) if they are mechanical

A

c) under no circumstances

129
Q

2% O2 must always be a helium used in diving ops. What’s the minimum required for n2?
a) 100n2
b) 10% O2
c) 2%N2
d) 5%O2

A

c) 2%N2

130
Q

What’s the minimum quantity of 100% O2 should retained for therapeutic use only?
a) 10 bars
b) 90m3
c) enough for table 6
d) 60m3

A

b) 90m3

131
Q

How long is a divers first aid Certificate valid?
a) 3 years
b) 3+ years, if booked refresher course
c) 2 years unless 02 trained
d) unlimited if outside 12 mile limit

A

a) 3 years

132
Q

On an air job if all the personnel except the supervisor dived, how many diver medics are required?
a) 1 + supv
b) 1 + ships medic
c) 2
d) 1 + first aider

A

c)

133
Q

Whats the minimum lenght of hose required per jetting gun per unit?

A

1.5 times the antecipate working depth

134
Q

What is the safe working pressure SWP, used in the offshore industry to removal of marine growth?

A

245 - 690 bar (5.000 - 10.000 psi)

note:
IMCA recommends 210 - 500 (4.000 to 8.000 psi) to clean SA 2 ½.

135
Q

What are the states of SI 2776/1997 diving at work regulations and approved code of practice ( ACoP) for “commercial diving projects offshore”?

A

a) diving ops should be carried out from a “safe and suitable place”
b) diving ops are deemed to be taking place when: the diver enters the water or any other liquid or chamber pressure that exceeds 100mb ( 1msw).
c) deco chamber required on all offshore/pipeline diving jobs.
d) deco chamber must be twin lock with enough room for 2 divers to lie down in comfort.
e) permission to platform within 500m range, wellhead & pipelines.
f) minimum divers qualification to work offshore.
g) maximum depth for surface diving 50msw
h) oxygen reduce at source to no more than 40 bar ( Norway - as low as possible)

136
Q

What is de difference between SWL and WLL? and what the stands is for?

A

WLL is the ultimate permissible load assigned by the manufacturer of the item. The SWL may be the same as the WLL but may be of a lower value assigned by an independent competent person taking account of particular service conditions.

SWL: Safe Working Load
WLL: Working Load Limit

137
Q

A certified ADS training can supervise Mixed gas and Nitrox diving job.

True or False?

A

False!

Examination and training for air diving supervisor does not include surface supplied mixed gas or nitrox diving techniques.
(IMCA D014)

138
Q

Does a tender need to be a qualified diver?

A

No!

Some tenders will be fully qualified, but less experienced divers. In such cases their competence will be
able to be verified easily. In cases where the tender is not a diver, however, and may in fact be a member
of the deck crew,then their competence will need to be established on the basis of previous experience
supplemented, where appropriate, with any additional training which the diving contractor or supervisor
feel is necessary.

(IMCA D014)

139
Q

Regards to Divers certificates and qualifications, what you should you know?

A
  1. should hold a diving qualification suitable for the work they intend to do;
  2. will need to have the original certificate in their possession at the site of the diving project
    – copies should not be accepted
140
Q

There are 4 divers in the water, how many standby divers should be ready?

A

2

There will need to be one standby diver for every two divers in the water.
The standby diver who normally remains on the surface needs to have a dedicated tender.

141
Q

What is the longest period that someone can be asked to work ?

A

The longest period a person will be asked to work, and only in exceptional circumstances, will be 16 hours before being given eight hours
of unbroken rest.

142
Q

Working periods should be planned so each person is normally asked to work for a maximum of….

a) 8h
b) 12h
c) 16h
d) 24h

A

B) 12h

Work should be planned so that each person is normally asked to work for a maximum of 12 continuous hours, and is then given a 12-hour unbroken rest period between shifts.
(IMCA D014)

143
Q

A repetitive dive is not considered when a diver re-enter the water after ?

a) 4h
b) 6h
c) 8h
d) 12h

A

d) 12h

any subsequent dive within 12 hours of surfacing (repetitive diving)

144
Q

For diving operations only DP vessels with IMO equipment class 2 or 3 should be used.

True or False

A

True

145
Q

The maximum noise level for hooded and unhooded divers near sonar transmissions is?

A

Hooded: 185db @ 10m away

Unhooded: 175db @ 30m away

146
Q

The use and storage of radioactive materials is governed by ….

A

'’The Ionising Radiation Regulation 1999’’

147
Q

What is RPS stands for?

A

Radiation Protection Supervisor

148
Q

Activate Alumina absorbs…

a) Helium
b) Air
c) CO2
d) Water

A

d) Water

149
Q

In the UK sector it is a requirement under the ACoP that the divers have their original
certificate in their possession at the work site.

True or False?

A

True

150
Q

The UK ACoP requires that the diving operations record be retained for …

a) 1 year
b) 2 years
c) 3 years
d) 4 years

A

b) 2 years

151
Q

What is the component part whose failure could cause or contribute substantially to a major accident, normally considered to be safety critical equipment?

A

Computer Software

152
Q

Who should be responsable for safeguarding any pipeline inlets under lower pressure than surrounding water?

A

Responsibility of the pipeline owner.

153
Q

Umbilicals should be marked for length at least every …………. meters using a recognised system which allows easy visual identification of the length paid out.

A. 5
B. 10
C. 33
D. 1

A

B

154
Q

Umbilicals should be marked for length at least every ………… feet using a recognised system which allows easy visual identification of the length paid out.

A. 5
B. 10
C. 33
D. 1

A

C

155
Q

OBGs on wet bell should have enough air to last a diver for ………… at his deepest depth.

a. 10 minutes
b. 20 minutes
c. 30 minutes
d. 1 hours

A

C. 30 minutes

156
Q

Internal pressure test of all valves, pipework, fittings, etc. to 1.5 times maximum working pressure when new.

True or False

A

True

157
Q

Drum Capacity The winch drum must be able to accept the full length of wire being used.
This means that there should be a clear space between the outside of the top layer of wire and the edge of the drum flange of at least ……….. the wire diameter.

a. 1 times
b. 2 times
c. 2.5 times
d. 4 times

A

c. 2.5 times

158
Q

Hydraulics and pneumatic hoses must be appropriately supported and secured at intervals not exceeding ……….

a. 1 meter
b. 2 meters
c. 3 meters
d 5 meters

A

b. 2 meters

159
Q

In a which category a classification society or insurance company surveyor, or Chief Engineer certificated falls in ?

a. Category 1
b. Category 2
c. Category 3
d. Category 4

A

c. Catergory 3

160
Q

A competent person in category 4 is?

a. Diving supervisor
b. Technician
c. Classification Society
d. Manufacture

A

d. Manufacture

161
Q

You are transferring gas via a flexible hose. What categories of competent person are qualified to perform a visual inspection of the hose?

a. Category 1
b. Category 1 and 2
c. Category 3 and 4
d. Category 1,2,3 or 4

A

d

162
Q

IMCA does not approve or recognise any doctors for diving medicals.

True or False

A

True

Air Diving Supervisors QUESTIONS (12 decks)

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