Rwo DEB 0.1 Installation guide

Installation, operating and maintenance manual SKIT/S-DEB 3rd print version
RWO GmbH ●Marine Water Technology●Bremen ●Germany Issue 2014-04-10
Installation, operating and maintenance
manual SKIT/S-DEB
acc. to IMO Resolution MEPC.107(49)

Installation, operating and maintenance manual SKIT/S-DEB 3rd print version page 2
Copyright
RWO GmbH ●Marine Water Technology●Bremen ●Germany Issue 2014-04-10
Copyright
© Copyright 2013 by RWO GmbH, Bremen, Germany
All rights reserved.
The contents of this manual are copyrighted.
Without a written approval by RWO GmbH, the manual must not be, partially or in full,
duplicated, circulated, used for the purpose of competition or made availableto third
parties.
This manual and all of its contents are property of RWO GmbH and have to be returned on
demand at all times.

Installation, operating and maintenance manual SKIT/S-DEB 3rd print version page 3
Contents
RWO GmbH ●Marine Water Technology●Bremen ●Germany Issue 2014-04-10
Contents
1General...............................................................................................................8
1.1 Design of the documentation 8
1.2 Location of the manual 8
1.3 Use of these documents 8
1.4 Guarantee 8
1.5 Contact information 9
2General safety notes..........................................................................................10
2.1 Responsibilities of the operator 10
2.2 Specific safety notes and symbols 11
2.3 Safety measures at the location of installation 11
2.4 Basic safety measures during normal operation 11
2.5 Basic safety measures during maintenance 12
2.6 Basic information on personal protection equipment (PPE) 13
2.7 Observe the environmental regulations 13
2.8 Risk potential of the bilge water oil separator 13
2.9 Sources of danger 14
3Design and function...........................................................................................15
3.1 Component overview 15
3.2 Standard scope of delivery 16
3.3 General function and proper use 17
3.4 Excerpt from the IMO Resolution MEPC.107(49) 18
3.5 MARPOL 73/78 Annex I 18
3.6 Regulation 16 (5) 18
3.7 MEPC.107(49 19
3.8 Equipment requirements 19
Bilge Separator 193.8.1
Bilge Alarm 193.8.2
Automatic stopping device 193.8.3
3.9 Installation requirements 20
3.10 Instructions 20
3.11 Training 21
3.12 Applicability 21
3.13 Separation-friendly cleaning agents 21
3.14 Technical data 21
Capacity, dimensions and weight 213.14.1
Electric data 213.14.2
Pipe connections 223.14.3
3.15 Operating instructions for programmable oil separator control 23
Elements of the control and display field 233.15.1
LED 243.15.2
Keys 243.15.3
LCD display 253.15.4
3.16 Control functions 25
Oil detection and oil discharge 253.16.1
3.17 Oil monitor 26
Alarms 273.17.1
System status message 273.17.2
3.18 Optional control functions 27
Oil separator remote control 273.18.1
Oil tank overflow 273.18.2
Monitor flow controller Option 283.18.3

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Contents
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
Oil alarm by means of capacitive probe in the oil separator Option 283.18.4
Pressure difference switch Option 283.18.5
Dry run protection Option 283.18.6
3.19 Identification of type 28
3.20 Type tests 29
3.21 Environmental requirements 30
Voltage 303.21.1
Feed water 303.21.2
Connections 303.21.3
Cleaning facilities 303.21.4
Oil detection and oil discharge 303.21.5
Protection 303.21.6
Humidity 303.21.7
Temperature 303.21.8
3.22 Noise 31
3.23 Vibrations 31
4Important terms and definitions for bilge water oil separator................................32
4.1 Test and certificates of the unit 32
4.2 Structural measures to prevent sea pollution by oil 32
4.3 Adsorption 32
4.4 Emulsion 32
4.5 Coalescence 32
5Storage.............................................................................................................33
5.1 Transport 33
5.2 Unpacking 33
5.3 Storage 33
5.4 Packaging disposal 34
5.5 Safety aspects before use 34
5.6 Installation 34
5.7 Requirements for putting the unit out of service over a longer period of time 35
6Preparation for commissioning...........................................................................36
6.1 Compressed air 36
6.2 Flushing water 36
6.3 Supply unit consumption list 36
6.4 Electricity 37
6.5 Valve terminal 37
Plug connections 386.5.1
Measures before commissioning 386.5.2
7Commissioning..................................................................................................39
7.1 Pump 39
7.2 Suction line 39
7.3 Flushing water inlet 40
7.4 Oil outlet 40
7.5 Flushing water outlet 40
7.6 Clean water outlet 40
7.7 Pipelines 41
7.8 Automatic - control box 42
7.9 Electrical connections of oil separator control system 43
8Installation plan .................................................................................................44
8.1 P&ID (pipeline and instrument diagram) 44
8.2 Installation scheme – suggestion 44
9Process description...........................................................................................45

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Contents
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
9.1 Oil water separation 45
9.2 Adsorber bypass 45
9.3 Flushing 48
9.4 Bilge alarm monitor OMD 48
10 Operation..........................................................................................................50
10.1 Before commissioning 50
10.2 Before each startup 51
10.3 Commissioning the SKIT/S-DEB 52
10.4 Meaning of the message lights 53
10.5 Menu structure 54
Start message 5410.5.1
Operation display 5410.5.2
Displays initiated by menu control 5610.5.3
Language selection 5710.5.4
Notes on input mapping 5710.5.5
Notes on output mapping 5810.5.6
Branching to the user settings 5810.5.7
Changing user settings 5910.5.8
11 Maintenance......................................................................................................62
11.1 Monthly inspections 62
11.2 Semi-annual inspections 62
11.3 Annual inspections 62
11.4 Mounting the coalescer non-return flap 63
11.5 Changing the coalescer 64
Dismounting 6411.5.1
Mounting the coalescer package for oil separators up to 2.5 m³/h 6511.5.2
Mounting the coalescer package for oil separators 5.0 m³/h and 10.0 m³/h 6511.5.3
Mounting the oil separator lid 6611.5.4
Commissioning the oil separator 6611.5.5
11.6 Replacing the adsorber plugs 66
Open adsorber housing. 6711.6.1
Take out the adsorber plugs 6711.6.2
Inserting new adsorber plugs 6711.6.3
Close adsorber housing. 6811.6.4
11.7 Replacing the solenoid valves 69
12 Troubleshooting.................................................................................................70
12.1 Warning notes 70
12.1 Table of faults 70
13 Spare parts.......................................................................................................74
13.1 Spare parts for SKIT/S-DEB 0.1 m³/h 74
13.2 Spare parts for SKIT/S-DEB 0.25 m³/h 75
13.3 Spare parts for SKIT/S-DEB 0.5 m³/h 77
13.4 Spare parts for SKIT/S-DEB 1.0 m³/h 78
13.5 Spare parts for SKIT/S-DEB 1.5 m³/h 80
13.6 Spare parts for SKIT/S-DEB 2.5 m³/h 81
13.7 Spare parts for SKIT/S-DEB 5.0 m³/h 83
13.8 Spare parts for SKIT/S-DEB 10.0 m³/h 84
13.9 Optional spare parts 86
13.10 Tools 86
13.11 Spare parts for control box 87
14 Drawings...........................................................................................................89
14.1 Adsorber (second stage) 89
14.2 Piston valve pos. 4, pos. 5 and pos. 15 SKIT/S-DEB 0.1 - 5.0m³/ 90

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Contents
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
14.3 Piston valve pos. 4 / Pos. 5 SKIT/S-DEB 10.0 m³/h 90
14.4 Sensor electrode pos. 9 91
14.5 3/2-way piston valve pos. 23 and pos.58 at SKIT/S-DEB 0.1 - 1.0 m³/h 91
14.6 3/2-way piston valve pos. 23 and pos. 58 at SKIT/S-DEB 1.5 – 10.0 m³/h 92
14.1 Coalescer pos. 34 SKIT/S-DEB 0.1 m³/h – 2.5 m³/h 92
14.2 Coalescer pos. 34 SKIT/S-DEB 5.0 m³/h – 10.0 m³/h 93
15 Annex ...............................................................................................................94
15.1 Checklist for commissioning 94
15.2 Record of the maintenance and repair works 97
List of tables
Tab. 1 Contact information...............................................................................................9
Tab. 2 Component overview ..........................................................................................16
Tab. 3 Component overview on pressure gauge board...................................................16
Tab. 4 Capacity, dimensions and weight, electric data....................................................21
Tab. 5 Electric data........................................................................................................21
Tab. 6 Component overview, pipe connections...............................................................22
Tab. 7 Pipe connections.................................................................................................23
Tab. 8 Type test certificates ...........................................................................................29
Tab. 9 Supply unit consumption list................................................................................36
Tab. 10 Valve terminal...................................................................................................38
Tab. 11 Component overview of control box...................................................................42
Tab. 12 Component overview, installation scheme .........................................................44
Tab. 13 Process overview..............................................................................................48
Tab. 14 Meaning of the message lights..........................................................................53
Tab. 15 Factory settings.................................................................................................60
Tab. 16 Table of faults...................................................................................................73
Tab. 17 Spare parts for SKIT/S-DEB 0.1 m³/h ................................................................75
Tab. 18 Spare parts for SKIT/S-DEB 0.25 m³/h...............................................................77
Tab. 19 Spare parts for SKIT/S-DEB 0.5 m³/h ................................................................78
Tab. 20 Spare parts for SKIT/S-DEB 1.0 m³/h ................................................................80
Tab. 21 Spare parts for SKIT/S-DEB 1.5 m³/h ................................................................81
Tab. 22 Spare parts for SKIT/S-DEB 2.5 m³/h ................................................................83
Tab. 23 Spare parts for SKIT/S-DEB 5.0 m³/h ................................................................84
Tab. 24 Spare parts for SKIT/S-DEB 10.0 m³/h...............................................................86
Tab. 25 Optional spare parts SKIT/S-DEB 0.1 m³/h to 10.0m³/h......................................86
Tab. 26 Tools ................................................................................................................87
Tab. 27 Component overview of control box...................................................................88
Tab. 28 Checklist...........................................................................................................96
List of figures
Fig. 1 Component overview............................................................................................15
Fig. 2 OMD and measuring cell......................................................................................16
Fig. 3 Automatic stop device..........................................................................................20
Fig. 4 Pipe connections..................................................................................................22
Fig. 5 Potentiometer ......................................................................................................25
Fig. 6 Lifting eyes X and Z.............................................................................................33
Fig. 7 Maintenance space of oil separator......................................................................34
Fig. 8 Maintenanceheight of oil separator......................................................................35
Fig. 9 Valve terminal......................................................................................................37

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RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
Fig. 10 Control box........................................................................................................42
Fig. 11 Installation scheme.............................................................................................44
Fig. 12 Delivery condition...............................................................................................63
Fig. 13 Cap....................................................................................................................63
Fig. 14 Non-return flap...................................................................................................64
Fig. 15 Adsorber plug replacement.................................................................................67
Fig. 16 Replacing the solenoid valves ............................................................................69

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1 – General
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
1 General
1.1 Design of the documentation
This document includes all important information for the
user of the described plant / unit:
·Safety notes
·Instructions for commissioning, handling and
maintenance
·Technical data
Should you require further information or should problems
occur which are not treated in detail in these operation
instructions, please contact RWO GmbH directly.
(à1.5 Contact information)
Figures, diagrams, and tables are only intended for
general understanding, they do normally reflect the RWO
standard but can differ in case of special systems,
additional options and technical changes. For detailed
information to the RWO system you purchased, refer to
the provided drawings.
1.2 Location of the manual
A copy of the manual must be kept easily accessible for
the operating and supervising staff.
1.3 Use of these documents
·Descriptions are given in the running text.
·Enumerations are marked with (●).
·Steps are marked with (1), 2), 3)…).
·Notes and links are marked with (à).
·Highlights in the running text indicate security
advices.
1.4 Guarantee
·Any warranty in terms of our sales and delivery
conditions as well as RWO’s confirmation of order
are only granted if:
·The plant / unit is used corresponding to these
operation instructions.
·The operating log is updated daily in full.
·The plant / unit is not used improperly.
·Repairs are carried out by authorised specialised
personnel only (such training can be booked
through the service department (à1.5 Contact
information)).
·Only original parts or spare parts and chemicals
approved by RWO GmbH are used for repair.
·No unauthorised alterations are carried out on the
whole plant.
Excluded from the guarantee are typical wear and tear
parts, like e. g.
·all rotating parts, gaskets, filters etc.

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1 – General
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
1.5 Contact information
Department
Telephone
Fax
E
-
mail
Repair and
service [phone] [phone]
[e-mail]
Spare parts
service [phone]
[phone]
[e-mail]
Sales [phone]
[phone]
[e-mail]
Internet www.rwo.de
Postal address RWO GmbH
Marine Water Technology
Thalenhorststrasse 15A
28307 Bremen
Germany
Note
When ordering spare parts, please provide us with the serial number of
the plant / unit (see cover page of these operation instructions or name
plate of the plant / unit).
Tab. 1 Contactinformation

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2 – General safety notes
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
2 General safety notes
2.1 Responsibilities of the operator
The plant / unit has been constructed and manufactured
considering the applicable resolutions, standards and
technical specifications. It corresponds to state-of-the-art
technology and guarantees highest possible safety in all
operation states.
The safety of the plant / unit can only be guaranteed if all
the required measures are fulfilled. The operator of the
plant has to plan these measures according tothe
instructions.
Especially, the operator must make sure that:
·The plant / unit is operated in perfect, functional
condition only. The safety devices should be
checked regularly to ensure correct function.
·Required personal protection equipment (PPE) is
available and used when required.
·The operation instructions are always complete,
readable and available on site for use on the plant /
unit.
·The operating log is updated daily in full.
·Only qualified and authorized personnel are
permitted to operate, maintain and repair the plant /
unit (such training can bebooked through the
service department (à1.5 Contact information)).
·The personnel are instructed regarding all
questions of working safety and environmental
protection, and know the contents of the operation
instructions and the safety notes contained therein.
·All safety and warning notes attached to the plant /
unit are visible and readable and have been neither
removed nor covered.
·Modifications are to be carried out by authorised
specialised personnel only and in coordination with
the supplier.

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2 – General safety notes
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
2.2 Specific safety notes and symbols
The operation instructions contain specific safety notes.
These are to avoid dangers to:
·Persons
·Product and plant / unit
·Environment
The symbols used in the operation instructions shall draw
the attention to the following issues!
DANGER
DANGER denotes an immediate danger. Non-
observance of the instruction can result in most
severe or fatal injuries.
WARNING
WARNING denotes a potentially dangerous situation.
Non-observance of the instruction could result in
most severe or fatal injuries.
CAUTION
CAUTION denotes a potentially dangerous situation.
Non-observance of the instruction can cause injuries.
IMPORTANT
Denotes important information and steps, non-
observance of which can cause damages and/or
functional faults of the plant / unit.
Note
Denotes application help, tips and other useful
information about the respective topic.
2.3 Safety measures at the location of installation
The plant / unit must be placed onto an even and solid
base and befixed or welded onto the ship fundament at
the designated points.
Danger
To overthrow the plant / unit means mortal danger!
2.4 Basic safety measures during normal operation
The plant / unit must be operated by specially trained and
authorized persons only, who know the operation
instructions (such training can be booked through the
service department (à1.5 Contact information)).

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2 – General safety notes
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
Check and make sure before starting the plant / unit that:
·Only authorized persons are allowed to stay in the
working area of the plant / unit.
·Nobody can be injured when plant / unit is started!
Check plant / unit for visible damage before starting and
make sure that it is operated in perfect condition only! Any
damage to the plant / unit must be reported immediately!
2.5 Basic safety measures during maintenance
·Ensure the intervals and activities for inspection and
maintenance are observed as stated in the operating
instructions!
·Observe maintenance and repair instructions
regarding the single components in the appendix!
·Before starting maintenance or repair works, close the
access to the plant / unit by unauthorized persons!
Provide signs mentioning that maintenance or repair
works are carried out!
·Depressurize the system, interrupt the feed to the
plant / unit and protect against restart!
·Switch-off main switch of power supply before starting
maintenance and repair works!
·When exchanging heavy plant / unit parts, use
suitable and functionable lifting devices only!
·Make sure before starting maintenance and repair
works that all parts are at room temperature.

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2 – General safety notes
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
2.6 Basic information on personal protection equipment (PPE)
Change your clothes before performing any kind of
maintenance or other work at the unit.
Wear:
Disposable single-use boiler suits
Rubber boots
Rubber coated textile gloves
Eye protection
Safety harnass
After work, dispose of the single-use clothes
properly and clean the other parts with fresh water
before storing them.
2.7 Observe the environmental regulations
Legal regulations for e. g. avoiding waste have to be taken
into consideration during all works carried out at the plant /
unit.
Especially during installation, repair and maintenance
works, water endangering materials such as:
·lubricants and oils
·hydraulic oil
·coolants
·acids and lyes
·cleaning agents
are not to be discharged into the soil or the drain!
These substances must be collected in suitable tanks,
transported and disposed of according to valid regulations!
2.8 Risk potential of the bilge water oil separator
The bilge water oil separator has been subject to a safety
inspection and acceptance test. Faulty operation or
misuse may result in severe health risks for the user and
damage to the environment. Additionally, the bilge water
oil separator and other assets of the ship can suffer
permanent damage.
All persons involved in the installation, the electric and
hydraulic connection and the operation of thebilge water
oil separator must be qualified accordingly (the relevant
training sessions can be booked in our service department
(à1.5 Contact information)) and must pay close attention
to these installation and operating instructions.
Your safety is concerned!

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2 – General safety notes
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
2.9 Sources of danger
DANGER
Voltage > 42 Volts. Direct contact with live parts may
cause serious injury or death. Before working on
electric equipment, interrupt the voltage supply
externally and turn themain switch (1Q1, à7.8
Automatic control panel) to "0".
Any wiring at the unit
only by trained staff!
DANGER
Danger of explosion!
Standard plants must not be operated in explosive
areas.
WARNING
The bilge water oil separator operates with an
eccentric spiral pump. Do not put your hands into the
area of the transmission bell housing - stuffing box
packing at the rotating shaft! Danger of most severe
finger and hand injuries.
CAUTION
Risk of injuries when working at lines under
pressure.
Before taking up the work, check water and
compressed air lines and make sure that they are not
under pressure.
Warning
All pneumatic valves are closed by a pre-tensioned
spring. On dismounting the valve drive, the spring
can eject forcefully and cause injuries.
CAUTION
If the bilge water oil separator is heated to the upper
range with an electric heater or a steam heater,
temperatures up to approx. 60 degreed celsius can
occur. Risk of burns.

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3 – Designand function
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
3 Design and function
3.1 Component overview
Fig. 1 Component overview Pos.
Description
1 Non-return valve
2 Power supply
3 Control box
9 Sensor electrode
10 Electric heating 2KW
11 Orifice
12 Safety valve (1.1 bar)
14 Mono pump
28 Funnel
29 Coalescer vessel (1st stage)
36 Pressure reducer
41 Zinc anode
42 Sampling valve
43 Safety valve (3.3 bar)
47 Adsorber (2nd stage)
57 3-way solenoid valve
58 Bypass valve
59 Venting

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3 – Designand function
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
Pos.
Description
60 Non-return flap
Tab. 2 Componentoverview
Fig. 2 OMD and measuring cell
Pos.
Description
7 Pressure gauge 0-10 bar compressed air
8.1 Vacuum pressure gauge -1/+5 bar coalescer input
8.2 Vacuum pressure gauge -1/+5 bar coalescer
output
17.1 Oil monitor OMD
17.2 Measuring cell
25 3-way ball cock
36 Pressure gauge of pressure reducer
37 Nameplate
54.1 Pressure gauge 0-10 bar adsorber input
54.2 Pressure gauge 0-10 bar flushing water input
76 Non-return valve
Tab. 3 Component overview on pressure gauge board
3.2 Standard scope of delivery
The standard version of the oily water separator type
series SKIT S-DEB is marked by the following
characteristics:

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3 – Designand function
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
The entire oil separator system (as of type SKIT S-DEB
0,25) is screwed to a base (pos. 16) which can be welded
in the engine room of the ship.
The second stage is equipped with adsorber cartridges.
The pump (pos. 14) (as of type SKIT S-DEB 0,25) is
attached to the container, connected by tubes and cables.
All piston valves (fig. 4, pos. 4, 5, 15, 23, 58) are
controlled by a valve terminal with the tube connections
ready upon delivery.
The automatic control box (pos. 3) is connected to the
system and wired to the sensor electrode, the electric
heater, the pump and the oil monitor OMD.
The oil monitor OMD is attached to the oily water
separator. The sample water lines and the electric system
are ready installed.
The plant (as of type SKIT S-DEB 0,25) is equipped with
an electric heater (pos. 10) in the upper part of the oil
separator which keeps the separated oil in a liquid state. A
thermo element limits the temperature; by defaults it is set
to 40°C. It is controlled by a contactor in the automatic
system control box (pos. 3). The heater can also be
switched off manually using a switch àFig. 10 Control
box.
The first stage is equipped with a drain valve (pos. 27) and
a pressure reducer valve (pos. 36).
Optionally, the oil separator system can be equipped with
a steam or thermal heater instead of the electric heater
and with a temperature control valve.
The oil separator systems are coated with a two-
components epoxy resin on the inside.
The outer coating consists of a universal primer and a
machine varnish.
(Any differing scope of delivery can be found in writing in
our order confirmation.)
3.3 General function and proper use
The IMO Resolution MEPC.107 (49) has been brought
into force on July 18th, 2004, and refers to all bilge water
oil separators and 15ppm alarm systems installed aboard
ships after January 1st, 2005.
IMO Resolution MEPC.107 (49) describes the details of
the type test for oil separators and 15ppm oil content
alarm systems. The main different to the old Resolution
MEPC.60 (33) consists in that the new MEPC.107 (49)
includes an oil in water emulsion. This emulsion is
generated by mixing thedifferent test oils with a specified
emulsifying chemical and an iron oxide powder for an hour
under controlled conditions using a centrifugal pump with
high speed. The bilge water oil separator must be able to
split the emulsion and to separated oil residues.
An emulsion is a mixture of two or more components. In
this case it includes oil and water. This mixture contains

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3 – Designand function
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
small oil particles which, however, do not form larger
drops or connect to such. Generating an emulsion
requires mechanical energy. This can be achieved by a
rotary pump or by higher pressure and turbulent flow
speed in a pipe system. In this process, present oil drops
are divided into many very small oil particles. This type of
mechanical emulsion can easily be separated by means of
an efficient coalescer. But if emulsifying chemicals are
present, the oil particles become hydrophobe by means of
ionic and anionic tensides on the oil particle surface. The
same micro-electric load of all particles in a stable
chemical emulsion renders agglomeration impossible.
Mechanic emulsions can normally be easily separated by
means of a mechanic coalescer. However, this does not
refer to stable chemical emulsions which can be separated
by means of:
·heat treatment in a vaporiser
·chemical processes by using an adequate
coagulation agent
·membrane - ultrafiltration which retains the oil
molecules
·adsorption by means of suitable materials
3.4 Excerpt from the IMO Resolution MEPC.107(49)
Excerpt from the IMO Resolution MEPC.107(49)
The following contains an excerpt from the IMO Resolution
MEPC. 107 (49). The excerpts are quoted in the original
language (English).
Revised Guidelines and Specification for Pollution
Prevention Equipment for Machinery Space Bilges of
Ships: Background
3.5 MARPOL 73/78 Annex I
The requirements of Annex I of the International
Convention for Prevention of Pollution from ships
MARPOL 73/78 relating to pollution prevention equipment
for ships are set out in regulation 16, which stipulates that
shops of 400 gross tonnage and above should be installed
with approved equipment
3.6 Regulation 16 (5) Regulation 16(5) stipulates that the oil content of the 15
ppm Bilge Separators should not exceed 15 ppm. The 15
ppm Bilge Alarm shall activate to indicate when this level
cannot be maintained and initiate automatic stop of
overboard discharge of oily mixtures where applicable.
3.8.1 15 ppm Bilge Separator;
3.8.2 15 ppm Bilge Alarm
3.8.3 Automatic stopping device

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3 – Designand function
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
3.7 MEPC.107(49 The Resolution MEPC.107(49) supersedes the
recommendations contained in Resolution MEPC.60 (33).
3.8 Equipment requirements
Bilge Separator3.8.1 15 ppm Bilge Separators are considered to be applicable
for use in conjunction with oily bilgewater and ballast water
from fuel oil tanks, as these are of a low or medium
capacity, and are conditioned by the need to avoid
discharging oil mixtures with an oil content more than 15
ppm of the mixture. It should beunderstood that a 15 ppm
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
satisfactorily 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 thebilge water to emulsify. Proper
measures should be taken to minimize the presence of
these substances in the bilges of a ship. With the
possibility of emulsified bilge water always present the 15
ppm Bilge Separator must be capable of separating the oil
from the emulsion to produce an effluent with an oil
content not exceeding 15 ppm.
Bilge Alarm3.8.2 The 15 ppm Bilge Alarm should record date, time and
alarm status, and operating status of the 15 ppm Bilge
Separator. The recording device should also store data for
at least eighteen months and should be ableto display or
print a protocol for official inspections as required. In the
event the 15 ppm Bilge Alarm is replaced, means should
be provided to ensure the data recorded remains available
on board for 18 months (computer unit).
To avoid wilful manipulation of 15 ppm Bilge Alarms, the
following items should be included:
1. very access of the 15 ppm Bilge Alarm beyond the
essential requirements of paragraph 4.2.8 requires the
breaking of a seal and
2. the 15 ppm Bilge Alarm should be so constructed
that the alarm is always activated whenever clean water is
used for cleaning or zeroing purposes.
Automatic stopping device3.8.3 The automatic stopping device is a device used, where
applicable, to automatically stop any discharge overboard
of oily mixture when the oil content of the effluent exceeds
15 ppm. The automatic stopping device should consist of
a valve arrangement installed in the effluent outlet line of
the 15 ppm Bilge Separator which automatically diverts
the effluent mixture from being discharged overboard back

Installation, operating and maintenance manual SKIT/S-DEB 3rd print version page 20
3 – Designand function
RWO GmbH ●Marine Water Technology ●Bremen ●Germany Issue 2014-04-10
to the ship's bilges or bilge tank when the oil content of the
effluent exceeds 15 ppm.
The accuracy of the 15 ppm Bilge Alarms should be
checked at IOPP (International Oil Pollution Prevention)
Certificate renewal surveys according to the
manufacturers instructions. Alternatively the unit
(measuring block) may be replaced by a calibrated 15
ppm Bilge Alarm. The calibration certificate for the 15 ppm
Bilge Alarm, certifying date of last calibration check,
should be retained onboard for inspection purposes. The
accuracy checks can only be done by the manufacturer or
persons authorized by the manufacturer.
3.9 Installation requirements
Fig. 3 Automatic stop device
For future inspection purposes on board ship, a sampling
point should be provided in a vertical section of the water
effluent piping as close as is practicable to the 15 ppm
Bilge Separator outlet. Re-circulating facilities (manual 3
way valve) should be provided, after and adjacent to the
overboard outlet of the stopping device to enable the 15
ppm Bilge Separator system, including the 15 ppm Bilge
Alarm and the automatic stopping device, to be tested with
the overboard discharge closed (seeàFig. 3 Automatic
stop device).
The re-circulating facility should be so configured as to
prevent under all operating conditions any by-ass of the
oily-water-separator. 15 ppm Bilge Separator should be
based in a non-hazardous area.
3.10 Instructions A vessel fitted with a 15 ppm Bilge Separator should, at all
times, have onboard a copy of the Operating and
Maintenance manuals.
All routine and repair maintenance to be recorded, see
“Routine and repair maintenance record” Tabelle in
“Operation and maintenance instruction”.
15 ppm
Bilge alarm
Automatic
stop
device
to the bilge
to the bilge
Outboards
Recirculation device for
Test and port control authorities
Oil
separator