Topic 9 Finals

Question 1

OWS meaning

Answer 1

Oily Water Separator

Question 2

a piece of equipment specific to the shipping or marine industry

Answer 2

Oily Water Separator

Question 3

used to separate oil and water mixtures into their separate components

Answer 3

Oily Water Separator

Question 4

any combination of a separator, a coalescer or other means

Answer 4

15 ppm Bilge Separator

Question 5

also a single unit designed to produce an effluent with oil content not exceeding 15 parts of oil per million parts of water by volume

Answer 5

15 ppm Bilge Separator

Question 6

Type of vessels required to have an oil discharge monitoring and control system along with an oil filtering equipment known as the Oily Water Separator

Answer 6

All Vessels

Question 7

OWS has always been a preferred choice of machinery on the ship for inspection even for who?

Answer 7

PSC inspectors and surveyors

Question 8

As per maritime regulations, what must be the oil content in the water processed from the OWS

Answer 8

less than 15 parts per million of oil (15 ppm)

Question 9

What annex and under what regulation says that any direct discharge of oil or oily water mixture into the sea shall be prohibited

Answer 9

Annex 1 of MARPOL under Reg. 4

Question 10

Ships with how much GT can discharge oil mixture under the following conditions:
1. The ship is en route.
2. The oily mixture is processed through an oil-water separator filter meeting the requirements of regulation 14 of this Annex.
3. The oil content of the effluent without dilution does not exceed 15 parts per million.
4. The oily mixture does not originate from cargo pump-room bilges on oil tankers.
5. In oil tanker ship, the oil-water mixture is not mixed with oil cargo residues.

Answer 10

400 GT and above

Question 11

When the ship is plying in the Antarctic area, any discharge into the sea of oil or oily mixtures from any vessel shall be

Answer 11

Prohibited

Question 12

MEPC meaning

Answer 12

Marine Environment Protection Committee

Question 13

A sampling point should be provided in a vertical section of the water effluent piping as close as practicable to the 15-ppm bilge separator

Answer 13

Resolution MEPC.107(49)

Question 14

One of the main causes of oily water filtering equipment malfunction

Answer 14

effect of bilge water containing cleaning agents

Question 15

Stages of OWS

Answer 15

First-stage filter
Second-stage filter

Question 16

removes physical impurities present and promotes some fine separation

Answer 16

First-stage filter

Question 17

uses coalescer inserts to achieve the final de-oiling

Answer 17

Second-stage filter

Question 18

the breakdown of surface tension between oil droplets in an oil/water mixture which causes them to join and increase in size

Answer 18

Coalescence

Question 19

will ensure that any oily mixture discharged into the sea after passing through the system has an oil content not exceeding 15 parts per million

Answer 19

Oil Filtering Equipment

Question 20

provided to ensure that any discharge of oily mixtures is automatically stopped when the oil content of the effluent exceeds 15 parts per million

Answer 20

Oil Filtering Equipment Arrangement

Question 21

a separate unit whose input comes from the discharge of the first unit

Answer 21

Filter Unit

Question 22

3 Stages of Filter Unit

Answer 22

1. Filter Stage
2. Coalescer Stage
3. Collecting Chamber

Question 23

where the impurities and particles are separated and are settled at the bottom for removal

Answer 23

Filter Stage

Question 24

where the coalescer induces coalescence process in which oil droplets are joined to increase the size by breaking down the surface tension between oil droplets in the mixture

Answer 24

Coalescer Stage

Question 25

where the large oil molecules rise above the mixture and are removed when required

Answer 25

Collecting Chamber

Question 26

output from this unit should be less than 15 ppm to fulfill legal discharge criteria

Answer 26

Collecting Chamber

Question 27

What shall be done if oil content in water is more than 15 ppm

Answer 27

maintenance work such as filter cleaning or renewal of filters

Question 28

a device for real time sampling and measuring of the oil content in a moving stream of water

Answer 28

Oil Content Monitor

Question 29

performs several functions including preventing illegal “over limits” discharges that occur when the oil content is above 15 ppm, by either shutting down the separator or by putting the separator into a recirculation or recycle mode where the oily bilge water is sent back to the oily wastes holding tanks

Answer 29

Oil Content Monitor

Question 30

used to separate immiscible liquids such as water from fuels and oils with different densities

Answer 30

Coalescing Filter Elements

Question 31

used to separate liquid aerosols such as water and oil from air or gas streams

Answer 31

Coalescing Filter Elements

Question 32

have a hydrophilic core to condense liquid aerosols into droplets that are large enough to be drained away via gravity

Answer 32

Coalescing Filter Elements

Question 33

– dual function product
– also remove submicron solids

Answer 33

Coalescing Filters