Chapter 2

Question 1

Where is smoking not allowed

Answer 1

On the open deck

Question 2

Galley equipment must be approved and the galley location assessed in
relation to the possibility of what?

Answer 2

hydrocarbon gas entering.

Question 3

What must portable electric equipment be if it is to be used on open deck

Answer 3

Of an approved type

Question 4

Flashlights and other portable battery operated equipment must be of a what?

Answer 4

Approved type

Question 5

Radios, cameras containing batteries, mobile phones etc. must not be used
where?

Answer 5

Outside of accommodation

Question 6

Main radio installation and radars may induce what?

Answer 6

electrical potentials in unearthed metallic ‘receivers’(rigging,
derricks etc.) up to 500 metres for MF & HF transmissions

Question 7

GMDSS equipment is not normally considered a problem due to what?

Answer 7

transmission frequency used

Question 8

Main radio transmitters should be earthed in?

Answer 8

Port and not used

Question 9

Radars should not be used where?

Answer 9

In port

Question 10

VHF radio transmissions are not considered hazardous on what setting?

Answer 10

Low power setting

Question 11

The hazardous area is the full width of the cargo tank deck and its’ full
length plus what?

Answer 11

a distance of 3 metres forward and aft of this area,
also for a height of 2.4 metres above the tank deck and within 3 metres of any
opening or potential opening in or on the tank deck

Question 12

Guidance on electrical equipment approvals is given where?

Answer 12

in the International Electrotechnical Commission Standard 60092-502.

Question 13

For the purposes of approval the ship is assessed in three zones (0,1 & 2)
depending on what?

Answer 13

the likelihood of flammable gas being present

Question 14

All approved electrical equipment must be tested by an __________ ____________
and issued with a certificate. The equipment will be marked accordingly

Answer 14

Approved authority

Question 15

What can static electricity produce?

Answer 15

Large voltages

Question 16

What creates static charge

Answer 16

Two dissimilar materials coming into contact with each other
Large static charges are created when the materials are then separated

Question 17

Accumulation of static charge depends on what?

Answer 17

Level of impurities The more
the number of impurities the easier the charge decays or relaxes

Question 18

Clean oil products have fewer __________ than dark oils and so are static accumulates.

Answer 18

Impurities

Question 19

What happens to a static charge over time

Answer 19

It decays

Question 20

What must happen to the accumulated static charge in order for it to make a spark?

Answer 20

It must be discharged

Question 21

A double electrode discharge is more __________ than a single electrode
discharge as the discharge is more ________

Answer 21

Dangerous
Focused

Question 22

Precautions against static electricity

_______ initial flow rates for static accumulator cargoes – less than _ m/sec

Answer 22

Reduce
1

Question 23

Precautions against Static
Metal sounding tapes should be __________ to the ships structure before
inserting into tanks

Answer 23

grounded

Question 24

Precautions against static electricity
Metal _______ on lengths of hose or pipelines should be bonded __________
by means of a wire or a bonding strap

Answer 24

Flanges
Electrically

Question 25

_________-__________ charged mists can be created by agitating oil in cargo tanks

Answer 25

Electro-statically

Question 26

Operating in ________ conditions avoids a static charge igniting a flammable Atmosphere

Answer 26

Inerted

Question 27

All tankers are now constructed with the accommodation and engine room ___ of the cargo tanks and pump room

Answer 27

aft

Question 28

The ship is divided into two areas:

Answer 28

The hazardous and gas safe areas. The boundary between the two is the front of the accommodation

Question 29

It is essential that hydrocarbon gas is prevented from entering where?

Answer 29

the gas safe area due to the presence of oxygen and sources of ignition

Question 30

Sources of ignition must be avoided in the cargo tanks and pumproom due to what?

Answer 30

the possible presence of hydrocarbon vapour and air

Question 31

The above deck area must be kept free of hydrocarbon gas due to what?

Answer 31

the possibility of ignition sources and the toxic gas effect on personnel

Question 32

The pump room is a particularly sensitive area as it is what?

Answer 32

the interface between the hazardous and gas safe area

Question 33

When preparing steel work for painting on the deck of a loaded tanker can a chipping hammer be used?

Answer 33

Yes, but not on pipelines

Question 34

You are in an enclosed space on an oil tanker. Your personal gas monitor starts beeping. What do you do?

Answer 34

Leave the space and tell everybody else to leave too

Question 35

When installing electrical equipment on tankers the regulations refer to Zones 0, 1 and 2. Which of these zones represents the greatest hazard level

Answer 35

Zone 0

Question 36

I nside a cargo tank on a tanker what could cause an electrically charged mist in the atmosphere?

Answer 36

Tank washing

Question 37

If a tank is inerted to less than 5% Oxygen what precautions are required against static when gauging and sampling equipment can be lowered into the tank?

Answer 37

None

Question 38

An accumulation of static charge can discharge and cause a spark. The type of discharge most likely to ignite a flammable atmosphere is called a

Answer 38

Double electrode discharge

Question 39

Which type of extinguishing medium does an oil tanker typically have on deck?

Answer 39

Foam

Question 40

The ship and the shore are at different electrical potentials. When the shore pipeline is connected to the ship there is a risk of a spark. This is controlled by the use of:

Answer 40

Insulation flange

Question 41

Hot work may include operations which require. what?

Answer 41

Heat Sparks Grinding Open flames

Question 42

Any metallic equipment which is to be lowered into a tank, such as an ullage tape, must be

Answer 42

Earthed before it enters the tank

Question 43

Charge accumulation in pipelines can be prevented doing what?

Answer 43

Bonding pipelines together and to the deck

Question 44

Which convention describes the safety aspect of required construction and design standards on oil tankers?

Answer 44

SOLAS Chapt ii

Question 45

All for the requirements for a spark to occur from static

Answer 45

Discharge Separation Accumulation

Question 46

EX approval types vary based on hazard level. Which 'zone' is the most hazardous?

Answer 46

Zone 0

Question 47

How do you identify electrical equipment which is suitable for use in a hazardous area?

Answer 47

'Ex' markings

Question 48

Which publication would you refer to for further guidance on loading static accumulating oils?

Answer 48

ISGOTT

Question 49

ISGOTT defines hot work on tankers Select all of the following options which would be considered as hot work

Answer 49

Welding Grinding Burning with oxyacetylene

Question 50

Hot work is not permitted

Answer 50

There is an alternative method of repair A work permit has not been completed

Question 51

Charge accumulation depends of the conductivity of the liquid. Which cargo loses it's accumulated charge the fastest?

Answer 51

Crud oil

Question 52

Which type of anodes are permitted in cargo tanks on tankers?

Answer 52

Zinc

Question 53

Charge separation occurs when dissimilar materials move against each other. Select all of the following examples which could cause charge separation on a tanker

Answer 53

Running a man made fibre rope through rubber gloves Liquid flowing through a pipeline