Тест по Bilge Water Separator (CES v5.0)

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Правильные ответы:
1

A coalescing filter is used in many bilge water separators. But what do we mean by “coalescing”? Select the ONE correct answer:

Ваш ответ правильный:

Small droplets join together and unite to form one larger droplet.
2

According to IMO requirements, how accurate must a 15 ppm bilge monitor be? Select the ONE correct answer:

Ваш ответ правильный:

A 15 ppm bilge alarm must be accurate to within plus or minus 5 ppm.
3

According to IMO requirements, how often must the accuracy of a 15 ppm bilge monitor be checked? Select the ONE correct answer:

Ваш ответ правильный:

At every IOPP Certificate renewal survey.
4

According to IMO requirements, what should happen when using a separate clean water supply to zero the 15 ppm bilge monitor? Select the ONE correct answer:

Ваш ответ правильный:

The alarm should sound, and this in turn implies, that the overboard discharge will be stopped.
5

According to IMO requirements, who should check and certify the accuracy of a 15 ppm bilge monitor? Select the ONE correct answer:

Ваш ответ правильный:

Only the manufacturer or a person appointed by them.
6

According to the IMO, what are you allowed to check or adjust on a bilge water discharge monitor? Select the ONE best answer:

Ваш ответ правильный:

You should have access to zero the monitor and to check its readings.
7

Can you pump machinery space bilges whilst at anchor? Select the ONE best answer:

Ваш ответ правильный:

No, because the vessel is not en-route.
8

Can you pump machinery space bilges whilst in a special area? Select the ONE best answer:

Правильный ответ:

Sometimes. Machinery space bilges cannot be discharged in the Antarctic area, and there may also be local restrictions.

Ваш ответ:

Yes, provided that you have a modern bilge water separator, meeting all requirements.
9

Flocculation is a process used in some bilge water separators. But what do we mean by “flocculation”? Select the ONE correct answer:

Ваш ответ правильный:

Two or more particles aggregate (stick together), without losing their individual boundaries.
10

In your view, what should be the aim of bilge water treatment? Select the ONE best answer:

Ваш ответ правильный:

To produce the cleanest discharge into the sea that we can get, and to comply with local and international rules.
11

Let’s check how much you already know. Complete the sentence. Current international legislation requires, that the bilge water discharged by ships should contain no more than ___ parts per millions of oil in water.

Ваш ответ правильный:

15.
12

On a modern vessel, can you transfer any of the contents of the sludge tank into the bilge separator tank? Select the ONE best answer:

Ваш ответ правильный:

Yes, we can strip water from the sludge tank, but this must be via an open hopper or sight glass, so that we can check, that it is only water.
13

Should bilge water separators be capable of handling emulsions and bilge water with a very high oil content? Select the ONE correct answer:

Ваш ответ правильный:

Yes, but we can improve the separation process by proper management of bilge water in the engine room.
14

The 15 ppm Bilge Alarm should record the date, time and alarm status, and operating status of the 15 ppm Bilge Separator. How long must it keep this data for? Select the ONE correct answer:

Ваш ответ правильный:

At least eighteen months.
15

What is the best way to use the bilge holding tank? Select the ONE correct answer:

Ваш ответ правильный:

Keep the bilge water there for enough time at a fairly high temperature.
16

What is the main principle of operation of a centrifugal bilge water separator? Select the ONE correct answer:

Ваш ответ правильный:

Separation of particles using the force due to gravity is replaced by separation due to a much larger centrifugal force.
17

What is the main purpose of the so-called “white-box” system, fitted with some bilge separators? Select the ONE correct answer:

Ваш ответ правильный:

To help protect the crew and ship-owner by providing evidence, that operations have been legal and that there has been no tampering with the equipment.
18

What is the purpose of the aeration chamber in a flocculation type bilge separator? Select the ONE correct answer:

Ваш ответ правильный:

To help the flocculation process.
19

What is the purpose of the filter fitted to the inlet of most bilge separators? Select the ONE best answer:

Ваш ответ правильный:

To prevent blockages in the separator due to large solid impurities.
20

What sort of cleaning chemicals and detergents should we use in the engine room? Select the ONE best answer:

Ваш ответ правильный:

Cleaning agents, that are quick-separating, environmentally friendly and non-toxic.
21

Where would you find regulations for discharging machinery space bilge water? Select the ONE correct answer:

Ваш ответ правильный:

MARPOL Annex I.
22

Which one of the following is the best description of a “PSSA” as described in MARPOL? Select the ONE best answer:

Ваш ответ правильный:

A PSSA is a Particularly Sensitive Sea Area, given special protection through action by IMO.
23

Which TWO of the following are most likely to affect the accuracy of a modern 15 ppm bilge monitor? Select the TWO correct answers:

Ваш ответ правильный:

Fouling of any optical surfaces.; The type of oil and oil droplet size.
24

Who is required sign the Oil Record Book Part One for pumping machinery space bilges? Select the ONE correct answer:

Ваш ответ правильный:

The officer(s) in charge of the operation and the Master.
25

Why do we add some chemical agents to the bilge water in a flocculation type bilge separator? Select the ONE correct answer:

Ваш ответ правильный:

To increase the alkalinity and to help the flocculation process.
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