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ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS A VIDEOTEL PRODUCTION i n assoc iation w ith

THE STEAMSHIP MUTUAL UNDERWRITING ASSOCIATION [BERMUDA] LTD The Producers would like to acknowledge the assistance of THE MASTER, OFFICERS AND CREW OF ARKLOW WIND THE STAFF OF THE NATIONAL MARITIME COLLEGE OF IRELAND A&P Falmouth Arklow Sh ipping Ltd The Baltic and International Maritime Council [BIMCO] BW Shipp ing Managers Dobson Fleet Management Dorchester Atlantic Marine Ltd Essar Sh ipping Lim ited Fafalios Ltd Fairmont Shipping [UK] Ltd Hamworthy plc Hanseatic Shipping Company Hong Kong Shipowners Association International Maritime Org anization (I MOI ISM Solutions Inc The Institute of Marine Engineering [IMarEST] INTERTANKO The Maersk Company Ltd Maritime and Coastguard Agency [MCA] OC IMF OM! Corporati on Paris MOU Shell International Trading & Shipping Co . Ltd Tanker Pa cific Man agement (Sing apore] Pte Ltd United States Coast Guard (USCG ] Vela International Marine Ltd V Ships UK Ltd Wallem Ship Management

CONSULTANTS: Sir William Codrington, Professor Jon Wonha m , Bill Coo per PRODUCER: Peter Wilde WRITER : Pat Mitchell DIRECTOR: Chris Setchell

WAR NING Any unauthorised copying, lending, exhibition, diffusion, sa le, public perfo rma nce or oth er exploitation of the accompa nyi ng video is strictly prohibi ted and may res ult in prosec ution .

© COPYRIGHT Videotel 2007 This vi deo and accompanying workbook training package is intended to reflect t he best available techniques and practi ces at th e time of prod ucti on. It is intended pu re ly as com ment. No res ponsi bility is accepted by Vid eotel, or by any f ir m, corporation or or ganisation who or which has been in any way concerned with the production or authorised translation , supply or sale of this video for accuracy of any information given hereon or fo r any omission heref ro m .

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SE PARATORS

VIDEOTEL PRO DUCTIONS

INTRODUCTION

4

HOW TO RUN THE PROGRAMME - PART 1

8

Introduction

8

2 The video

8

3 Points from the video

9

4 Sources - leaks etc

9

5

Sources - cleaning

6 Summary

HOW TO RUN THE PROGRAMME - PART 2 Introduction

10

10

11 11

2 The video

11

3 How the separator and oil content monitor work

12

4 Operation of the separator

15

5 Maintenance

16

6 Security

16

7 The new generation of separators

17

8 Summary

18

HELPFUL QUESTIONS - PART 1 AND 2

19

APPENDIX

20

RESOURCES AND FURTHER READING

20

3

ENGINE ROOM WASTE MANAGEMEN T OILY WATER AN D SEPARATORS

VIDEOTEL PRODUCTIONS

THE ENGINE ROOM WASTE MANAGEMENT SERIES This training programme on Oily Water and Separators is one of a series of four covering different aspects of engine room waste management. The other three cover, The Oil Record Book, Sewage and Waste Water Treatment, and Sludge and the Incinerator respectively. Each of the four programmes consists of a video and an accom panying guide.

TARGET AUDIENCE AND FORMAT Th e programm e is designed for all engin e room perso nn el. It is in two parts, each of whi ch is led by a seni or enginee r officer. Each part begins with a brief introduction. The group then w atch a vid eo whi ch lasts about fifteen minutes. They then di scuss the points raised in the video and relate these to the particular circumstances of their own ship.

4

ENGINE ROO M WASTE MANAGEMENT OILY WATER AND SEPARATORS

VIDEOTEL PRO DUCTIONS

OBJECTIVES Those taking part in the training programme will :

• Identify typ ical sources of oily water • Know how to minimise the amount of oily water reaching the bilges and control its content so that the oily water separator [OWS] and oil content monitor [OCM) are able to work properly • Understand the working principles of the OWS and the OCM • Understand important features of operating and ma inta ining the OWS, including some simp le security precautions • Learn about the new generation of separators designed to meet the standards specified in MEPC.107(49) MEPC stand s for ··Marine Environment Prote ction Committee ·'. This is a committe e of the International Maritime Organization - the IMO. The numbers simply tell us that this is the Committee's 107'h resolution, passed at their 491hsession . The full title of the resolution is: "Revised guidelines and speci fi cation s for pollutio n prevention equipment for machinery spaces of ships". In addition to th e usual introduction, explanation of th e background and definitions, th e resoluti on contains: • Technical specification s • Specifications for type approval testing of pollution prevention equipment • Insta llation require ments • Relate the issues covered in the programme to their own shi p

THE PROGRAMME • PART 1 covers where oily water comes from, how to min imise the quantity reaching the bilges and how to control the content of the water so that the OWS and the OCM are able to function correctly • PART 2 covers how the separator and the DCM work, how to operate and maintain them, simple security precautions and an outline of the new generation of separators Ea ch part of th e programm e is divid ed into sec tion s. If you don't have tim e to run all of either part, you ca n run som e section s separately. Fo r exa mple, you could di sc uss oper atin g th e se parator in one short trai ning session and m aintaining it in anoth er. If you d o, show th e vid eo in th e f irst session and don 't leave too m uch of a gap between sessions.

THE VIDEO Th e video show s a co nversa tion between an experienced engineer and a stu dent who is nea rin g the end of her un iver si ty degree in mech ani ca l enginee ring and is co nsiderin g a ca ree r at sea . The exper ienced eng in ee r explains and disc usses why it is im portant to handle oily w ater proper ly and how t hat is done. Th e vid eo is in two pa r ts, each lasting approximately 15 minutes .

5

EN GINE ROO M WASTE MANAGEMENT OILY WATER AN D SEPARATORS

VID OTEL PROD CTIONS

THE REGULATIONS The appendix to the guide contains copies of the following regulations from MARPOL, Annex I:

• Regu lation 4: Exceptions • Regulation 14 : Oil filtering equipment • Regulation 15: Control of the discharge of oi l • MEPC 54/2 1, Annex 17

6

ENGINE ROOM WASTE MANAGEMENT OILY WATER AN D SEPARATORS

VIDEOTEL PRODU CTIONS

PREPARATION FOR PART 1 If you will be leading the prog ra mme:

• Watch PART 1 of the video • Read the detailed notes suggesting how to run the programme • Think about how the points raised relate to your ship (for example, procedures for disposing of gas oil used for cleaning! • Read MARPOL, Annex I, Regulations 14 and 15 • Identify any specific actions which you would like those taking part to take once the programme is over. When you are leading the discussion, try to avoid telling the group what these are. Encourage them to come up with ideas. Add anything they have missed once they have done so. We have included examples of questions wh ich you may want to use to encourage discussion

PREPARATION FOR PART 2 If you will be leading the progra m me :

• Watch PART 2 of the video • Read the detailed notes suggesting how to run the programme • Think about how the points raised relate to your ship (for example, the procedure to be followed for cleaning the OWS once discharge is completed] • Section 5 of the programme covers the planned maintenance system [PMS) for your ship 's separator. Decide how much detail you want to go into about this • Review the fault list in your separator's manual and decide which items are a prio r ity to discuss w ith those you will be training • Identify any stand ing orders for the treatment of oily water which are specific to your sh ip • If your company is Likely to be installing new generation separators in the near future , find out what type these will be so that you are able to discuss them during the programme • Identify any specific actions which you would like those taking part to take once the programme 1s over • As with PART 1, try to make this session a discussion rather than a lecture, using the examples of questions which we have provided if you think that these are helpful

7

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS

VIDEOTEL PRODUCTIONS

1 INTRODUCTION Explain that:

• This short training programme is about oily water • It is in two parts. This part is about where oily water comes from , how to minimise its quantity and how to control its content so that the separator and oil content monitor are able to work properly. Part 2 covers how the separator and oil content monitor work, how to operate and maintain them, simple security precautions and an outline of the new generation of separators • You will show them a video lasting about 15 minutes • You will then lead a discussion about the points raised in the video. The main objective of this discussion is to identify and agree ways of handling oily water better on your ship. Stress that you want their ideas and suggestions Remind the group that the discharge of oily water, whether through the separator or to shore based facil.ities, is strictly controlled by internationally agreed regulations and it is in spected by port state authorities . The limit for discharge at sea is 15ppm !parts per million] and the ship must be en route during discharge.

Ask them if they know what 15ppm means. It is roughly a coffee cup of oil in 20m3 of water.

2 THE VIDEO Explain that the video shows a conversation between an engineer officer and a student who is nearing the end of her university degree course in mechanical engineering and is has been asked by her professor to do a project on " real engineering". Show the video .

8

ENGINE ROOM WASTE MANAG EMENT OILY WATER AND SEPARATORS

VIOEOTE L PRODUCTI ONS

3 POINTS FROM THE VIDEO Ask the group what they thought were the important points from the video. In summa ry the se are:

• There are many sources of oily water - such as leaks, spills, overflows and condensation • Good housekeeping can reduce the quantity of oily water coming from many of these sources. A leak that drips every second can put 30 or 40 litres into the bilges in a day • Cleaning is a particular issue • Controlling the content, as well as the quantity, of the oily water that reaches the bilges is important. If it contains too much oil the separator may struggle to cope with it. If it contains impurities such as soot, the OCM may not work properly

4 SOURCES - LEAKS ETC • Ask the group for suggestions about how to reduce the amount of oily water from leaks, spills and overflows • Check that they understand and are following the procedures for handling items contaminated with oil - filters, oily rags and so on. Ask for any ideas about how to do this better • Stress the importa nce of keeping as much oil as possible out of the bilges by, for example, carefully emptying drip trays • Add any points for improvement which the group have not suggested

9

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS

VI DEOTE L PRODUCTIONS

5 SOURCES - CLEANING Discuss and identify improvements in the procedures for the following cleaning tasks:

• Keeping bilges and holding tanks as clean as possible • Preventing emulsifiers getting into the bilge water • Cleaning the air cooler in the charge air receiver • Disposing of gas oi l used for clea ning • Handling water contaminated with soot from pressure washing the waste heat recovery unit in the funnel, wh ile in port

6 SUMMARY Summarise the action points which you have agreed. Agree a timescale fo r implementation.

10

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS

VIDEOT EL PRODUCTIONS

1 INTRODUCTION Explain that:

• PART 2 of this short training programme covers how the separator and DCM work, how to operate and mainta in them, including tackling faults, simple security precautions and an outline of the new generation of separators • As in PART 1, you will show them a video lasting about 15 m inutes, followed by a discussion about the points raised in the video . The main objective of t his discussion is to identify and agree ways of handling oily water better on your ship. Stress that you want their ideas and suggestions

2 THE VIDEO Remind the group that the video shows a conversation between an engineer officer and a student who is nearing the end of her university degree course in mechanical engineering and is considering a career at sea. In PART 1 they discussed the sources of oily water. In this part they talk about how oily water is dealt with. Show the video.

11

ENGINE ROOM WASTE MANAGEMENT OILY WATE R AN D SE PARATORS

VID EOTE L PRODUCTIO NS

3 HOW THE SEPARATOR AND OIL CONTENT MONITOR WORK Check that those taking part understand the principles of how the separator and OCM wo rk . Answe r any questions they may have. Points to stress are:

• Separation starts in the holding tank. Because oil and water have a different specific gravity, the static mixture of the two liqu ids in the tank will separate, with oil rising to the top, wh ich from there can be drawn off into a waste oil tank. This lowers the concentration of oil in the water towards the bottom of the tank, making it eas ier for the separator to deal with • The present generation of separators contain two stages:

12

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS

VIDEOTEL PRODUCTIONS

13

ENGINE ROOM WASTE MANAGEMENT OILY WATER ANO SEPARATORS

14

VIDEOTEL PRODUCTIONS

ENGINE ROOM WAS TE MANAG EMENT OILY WATER AN D S PARATORS

VIDEOTE L PRODUCTI ONS

4 OPERATION OF THE SEPARATOR The details t o cover in th is secti on will obvi ously depend on the make and mode l of the separato r on your sh ip. Find out wh ether t he group ever experience any proble ms w hen running the equ ipm ent. Ask for any suggestions th ey may have for im provem ents .

You may wish to stress the following general points which were covered in the video :

• It is good practice to put the manufacturer's operating instructions in an easily visible position near the separator. Encourage those who operate the equipment to check the instructions, even if they have used it before . Sometimes even experienced operators can overlook something important • At the end of each cycle whoever is operating the separator should back-flush the equ ipment with clean water. This cleans the filters in Stage 2 and removes any remaining oil from Stage 1. The separator should be left full at clean water so that it is ready for the next time it is used • At the beginning of each separation cycle it is important to zero test the OCM with clean water • At the beginning and end of each cycle it is essential to check the ship 's exact position as th is information must be entered in the Oil Record Book • On many ships [yours?] there is a float in the bilge holding tank wh ich will stop the sepa r ator running before the concentration of oil in the water becomes too great for it to cope with . If this is not the case on your sh ip, stress that the operator should estimate the amount of pumpable water in the system so that it can be shut down before the separator is flooded with concentrated oi l. It is not acceptable practice to run t he equipment until the alarm sounds Explain and discuss any standing orders on your ship which are additional to the procedures called for in the statutory regulations .

15

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS

VIDEOTEL PRODUCTIONS

5 MAINTENANCE Discuss the PMS for your separator with the group.

• Check that they understand the important points which it covers • Find out whether they have any problems maintaining the equipment or ideas for improvement • Expla in how you verify that maintenance schedules are being followed • Stress the importance of keeping sufficient spares on board Explain the key points from the fault list for your separator. Stress that when faults occur:

• They must stop the separator runn ing as soon as the fault develops, rather than waiting until they have identified the problem. There must never be any r isk that water with an oil content above the 15 ppm Limit could be discharged overboard . • They must avoid any temptation to break or bend the rules. If a problem arises which can only be solved by doing something illegal, that is an issue for the shore office to sort out.

6 SECURITY The video highlighted the use of:

• White boxes. These prevent anyone tampering with the OCM. • Seals on valves and flanges in the engine room. These ensure that no one can interfere with any pipe work containing oil or oily wastes. Some seals are plastic, so that they can be removed quickly in an emergency. Others are chains secured by padlocks. The numbers of plastic seals are recorded in the engine room logbooks and the Chief Engineer keeps the keys to any padlocks Di scuss with the group the steps taken on your ship to protect the security of the equipment for handling oily water.

16

ENGINE ROOM WASTE MANAGEMENT OILY WATER AND SEPARATORS

VIDEOTEL PRODUCTIONS

7 THE NEW GENERATION OF SEPARATORS As the student pointed out to the engineer in the video, the current generation of separators have some important disadvantages and limitations. They cope badly with dirt, soot, emulsifiers , and oil at too high a concentration. Rough sea conditions lower the efficiency of separation. For these reasons, it is often difficult for even the most experienced engineers to make them work properly.

That is why the IMO has introduced a revised set of gu idelin es and specifications for separators. These are set out in M EPC.107[491. MEPC stands for "Marine Environment Protection Committee". This is a committee of the International Maritime Organization - the IMO. The numbers simply tell us that this is the Committee 's 107th resolution, passed at their 49th session. The full title of the resolution is:

"Revised guidelines and specifications for pollution prevention equipment for machinery spaces of ships" In addition to the usual introduction, explanation of the background and definitions, the resolution contains:

• Tech nical specifications • Specifications for type approva l testing of pollution prevention equipment • Installation requirements

17

ENGINE ROOM WASTE MANAGEMENT OILY WATER ANO SEPARATORS

VIOEOTEL PRODUCTIONS

These new requirements apply to :

• "Installations fitted to ships, the keel of which are Laid or which are at a similar stage of construction on or after 1 January 2005; and

• To new installations fitted on or after 1 January 2005 to ships, the keel of which were laid or which were at a similar stage of construction before 1 January 2005 in as far as is reasonable and practicable" The requirements for design, manufacture, testing, type approval and so on are very detailed, but tell the group that the good news for ships' engineers is contained in the following single paragraph :

"It should be understood that a 15ppm Bilge Separator must be capable of handling any oily mixtures from the machinery space bilges and be expected to be effective over the complete range of oils which might be carried on board ship, and deal with oil of very high relative density, or with a mixture presented to it as an emulsion. Cleansing agents. emulsifiers, solvents or surfactants used for cleaning purposes may cause the bilge water to emulsify. Proper measures should be taken to minimise the presence of these substances in the bilges of a ship. With the possibility of emulsified bilge water always present the 15ppm Bilge Separator must be capable of separating the oil from the emulsion to produce an effluent with an oil content not exceeding 15ppm .. Explain that a number of manufacturers have already risen to this challenge using a variety of technical approaches, including centrifuges, sophisticated membranes, biological systems and evaporation. If your company is introducing new generation separators, explain the approach on which they will be based .

8 SUMMARY Summarise the action points which you have agreed . Agree a timescale for implementation.

18

ENGINE ROOM WAST E MANAGEMENT OILY WATER AND SEPARATORS

VIDEOTEL PRODUCTIONS

PART 1 Name three sources of oily water 2

Name three different types of impurities which may prevent the OWS or the OCM from working properly

3

Oil and water separate because of differences in what?

4

Why must we avoid using cleaners that contain emulsifiers?

5

Why are heating coils used in the bilge holding tank and the separator?

6

How should gas oil used for cleaning be disposed of?

7

Why do some companies put their OCM in a lockable white box?

8

What should you do if the separator develops a fault while you are operat ing it?

9

What should you do to the OCM before starting separation?

10 What should you do to the separator once you have completed a cycle of separation?

PART 2 1

What happens in the first separat ion stage of the separator?

2

What happens in the second coalescing stage of the separator?

3

Why do some companies put the ir OCM in a lockable white box?

4 Why are heating coils used in the bi lge holding tank and the separator? 5

How is the discharge of oil and water contro lled in the first stage of the separator?

6

How does the oil content monitor work?

7

What should you do if the separator develops a fault while you are operating it?

8

What should you do to the OCM before starting separation?

9

What should you do to the separator once you have completed a cycle of separation?

10 Name two of the principles on wh ich the design of the new generation of separators is based 11 Why is it necessary to check the ship's posit ion at the beginning and end of separation? 12 Why is it good practice to lock flanges and valves w ith plastic seals and padlocks?

19

EN GINE ROO M WASTE MANAGEMEN T OI LY WATER AND SEPARATORS

MARPOL, ANNEX I CHAPTER 1 GENERAL Regulation 4: Exceptions CHAPTER 3 REQUIREMENTS FOR MACHINERY SPACES OF ALL SHIPS PART B - Equipment Regulation 14: Oil filte r ing equ ipment PART C - Control of operational discharge of oil Regulation 15: Control of the discharge of oil A: Discharges outside special areas B: Discharges in special areas C: Requirements for ships of less than 400 gross tonnage in all areas except the Antarctic area D: General requirements

RESOURCES AND FURTHER READING Shipping Industry Gu idance on the use of Oily Water Separators Publi shed by: MARITIME I

20

VIDEOTEL PRODUCTIONS

ine Room Waste Managem

Oi y Water and Separator Appendices

extracts have photocopying.

included in this format

Extracts from MARPOl (IMO, 2006), with thanks to the International me Organization. Always use the most up date copy of , which should be available on board. Annex I Chapter 1 - General Regulation 4 Regulations 15 and 34 1 the discharge into securing the .2 the discharge into

this Annex shall not apply to: sea of oil or oily mixture necessary a

purpose of

or saving life at sea; or

sea of oil or oily mixture resulting

or its equipment: .2.1 provided that all damage or discovery of discharge; and

precautions have been taken the occurrence of the discharge for the purpose of preventing or minimizing the

.2.2 except if owner or recklessly and with

master acted either with intent to cause damage, or that damage would probably or containing

.3

Administration,

used for the purpose

incidents in order to minimize shall be subject to contemplated the

approval of any Government in will occur.

Chapter 3 - Requirements for Machinery Spaces of all

Part B - Equipment Regulation 14 - Oil filtering equipment SEE INTERPRETATION 18

"'"''r1t1orl in paragraph 3 of this tonnage and than 10,000 gross equipment complying with paragraph 6 of this discharge into the sea water retained in fuel 16.2 shall comply with paragraph 2 of this regulation.

jurisdiction it is

SEE INTERPRETATIONS 19.1 AND 19.2 AND 20

2 Except as specified in paragraph 3 of this regulation, any ship of 10,000 gross tonnage and above shall be fitted with oil filtering equipment complying with paragraph 7 of this regulation. SEE INTERPRETATION 20

3 Ships, such as hotel ships, storage vessels, etc. , which are stationary except for non-cargo-carrying relocation voyages need not be provided with oil filtering equipment Such ships shall be provided with a holding tank having a volume adequate, to the satisfaction of the Administration, for total retention on board of the oily bilge water. All oily bilge water shall be retained on board for subsequent discharge to reception faci lities. 4 The Administration shall ensure that sh ips of less than 400 gross tonnage are equipped, as far as practicable, to retain on board oil or oily mixtures or discharge them in accordance with the requirements of regulation 15.6 of this Annex . 5 The Administration may waive the requirements of paragraphs 1 and 2 of this regulation for: .1

any ship engaged exclusively on voyages within special areas, or

.2

any ship certified under the International Code of Safety for High-Speed Craft (or otherwise within the scope of this Code with regard to size and design) engaged on a scheduled service with a turn-around time not exceeding 24 hours and covering also non-passenger/cargo-carrying relocation voyages for these ships,

.3

with regard to the provision of subparagraphs .1 and .2 above, the following

conditions shall be complied with : .3.1 the ship is fitted with a holding tank having a volume adequate, to the satisfaction of the Administration, for the total retention on board of the oily bilge wate r; .3 .2 all oily bilge water is retained on board for subsequent discharge to reception facilities; .3.3 the Administration has determined that adequate reception facilities are available to receive such oily bilge water in a sufficient number of ports or terminal s th e ship calls at; .3.4 th e International Oil Pollution Prevention Certifi cate , when required, is endorsed to the effect that the ship is exclusively engaged on the voyages within special areas or has been accepted as a high-speed craft for the purpose of this regulation and the service is identified; and SEE INTERPRETATION 21

.3.5 the quantity, time, and port of the discharge are recorded in th e Oil Record Book Part I. SEE INTERPRETATION 7

6 Oil filtering equipment referred to in paragraph 1 of this regulation shall be of a design approved by the Administration and shall be such as will ensure that any oily mixture discharged into the sea after passing th ro ugh the syst e m ha s an oil co ntent not exce eding 15 parts per million. In considering th e design of such equipment, the Administration shall have regard to the specification re commended by the Organization .* 7

Oil filtering equipment referred to in paragraph 2 of this regu lation

shall comply with paragraph 6 of regulation. In addition, it shall provided with alarm to indicate when this level cannot also be provided with to ensure maintained. The system that any of oily mixtures is automatically stopped when the oil content of 5 per million. In the of such equipment and approvals, the Administration to specification by Organization.*

• Refer the Recommendation on international and test for oily-water equipment and ail content meters, by the by Assembly resolution A.393(X), or the Guidelines and for pollution prevention equipment for machinery space bilges ships. by the Marine Environment Protection Committee by resolution MEPC.60(33), or the Revised and for prevention equipment for machinery space of ships, Environment Protection Committee resolution MEPC. 07(49).

Chapter

for Machinery

Part

of

of the discharge of oil SEE INTERPRETATIONS 18, 22.1.1AND2212

to the of regulation 4 of this annex and paragraphs 2, 3, and 6 of any discharge into the sea of oil or oily mixtures from shall be

A

Discharges outside special areas

2 Any discharge into the sea and above shall be prohibited

oil or oily mixtures from ships of 400 gross all the following conditions are

en route;

is

.1

the

.2

the oily mixture is through an oil filtering equipment meeting the of regulation 14 of this Annex; not OVt•oc>f1 15 parts per million; oil content of without dilution

.3 .4 and .5

the oily mixture the

.2

on oil cargo

in special areas

d above shall

.1

from cargo pump-room

mixture, in case of oil tankers, is not mixed with

B

1 and

not

into the sea of

or oily mixtures

sh

when all of the following

prohibited

of 400 gross tonnage are

ship is proceeding en route; the oily mixture is

through an oil filtering equipment meeting

of regulation 14.7 of this Annex;

.3

oil content of

without dilution

not

15 parts per million;

.4 and

the oily mixture does not

.5

from

oily mixture, in case of oil

4 In any ship

is not mixed with oil cargo

of the Antarctic area, any discharge into the sea of oil or oily mixtures from be prohibited.

5 Nothing in this special area from this

shall prohibit a ship on a voyage only part of which is in a rging outside a special area in with paragraph 2 of

for

of less than 400 gross tonnage in all areas

6 In the case of a ship of than 400 either be on board for subsequent into the sea in accordance with the following .1

.2

pump-room bilges on oil

the is proceeding en route; the ship has in r.norrmn ensures that the oil content

the

tonnage, oil and all oily mixtures shall to facilities or discharged

of a

approved by the Administration that

the effluent without dilution

not

15 parts

per million; .3

the oily mixture does not originate from cargo pump-room

on oil

and

.4

the oily

in case

oil tankers, is not

with oil cargo residues.

ts Whenever visible traces of oil are observed on or below the surface of the water in the vicinity of a or its wake, Governments Parties to the Convention should, to extent they are reasonably able to do so, promptly investigate the bearing on the issue of whether there has been a violation of the provisions of this The should in particular, wind and sea conditions, the track and ship, sources of visible traces in the vicinity, and any records.

norman

into the sea shall contain chemicals or other substances in quantities or which are hazardous to marine environment or chemicals or introduced the purpose circumventing of in this regulation which cannot be retained on board