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ATTACHMENT NO. 01 02 - - NUMBER OF PAGES 3 2 - - DOCUMENT NO. DOC. NO. 12 - 42 09 050 - BG 02 09/5/12 Categorizing Eq. Gusti N. Dirgantar 01 04/4/12 Document Format REV. DATE DESCRIPTION PREPARED BY CHECKED BY APPR DESIGN-IV: MACHINERY BASIC DESIGN DESIGN-IV: MACHINERY BASIC DESIGN TECHNICAL SPECIFICATION OF WATER SEPARATOR (OWS) SYSTEM Ir. Dwi Priyanta, MSE. Ir. Prastow
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Page 1: BOOK 12 [BGO]

ATTACHMENT NO. 01 02 - -

NUMBER OF PAGES 3 2 - -

DOCUMENT NO. DOC. NO. 12 - 42 09 050 - BG

02 09/5/12 Categorizing Eq.I Gusti N. Dirgantara Ir. Dwi Priyanta, MSE. Ir. Hari Prastowo, MSc.

01 04/4/12 Document Format

REV. DATE DESCRIPTION PREPARED BY CHECKED BY APPROVED BY

DESIGN-IV: MACHINERY BASIC DESIGN

DESIGN-IV: MACHINERY BASIC DESIGN TECHNICAL SPECIFICATION OF OILY WATER

SEPARATOR (OWS) SYSTEM

Page 2: BOOK 12 [BGO]
Page 3: BOOK 12 [BGO]

- -

- -

DOC. NO. 12 - 42 09 050 - BG

Ir. Hari Prastowo, MSc.

APPROVED BY

DESIGN-IV: MACHINERY BASIC DESIGN

DESIGN-IV: MACHINERY BASIC DESIGN TECHNICAL SPECIFICATION OF OILY WATER

SEPARATOR (OWS) SYSTEM

Page 4: BOOK 12 [BGO]
Page 5: BOOK 12 [BGO]

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 02

Type : Table of Contents

TABLE OF CONTENTS

PHILOSOPHY DOCUMENTS

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. DESIGN PARAMETER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 The summary of Doc. No. 11 - 42 09 050 - BG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Main Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. DESIGN REQUIREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 VALVE AND FITTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ATTACHMENT NO. 01 - CALCULATION

1. Oily Bilge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Pump Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Power of Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Volume of Bilge Well . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Volume of Oily Waste Collecting Tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. Volume of Slude Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ATTACHMENT NO. 02 - BILGE OIL PUMP SPECIFICATION

1. Application and Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Performance and Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

Page 6: BOOK 12 [BGO]

: DESIGN IV

: 12 - 42 09 050 - BG

: 02

: Table of Contents

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Page 7: BOOK 12 [BGO]

Page 7 of 30

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

1 INTRODUCTION

1.1 Description

1.2 Objective

2 REFERENCES

a. Germanischer Lyoid Rules and Guidelines 2011

b. Marine Engineering, Roy L. Harrington, "Chapter XX - Piping System" :1971

3 ABBREVIATIONS

vs = Velocity of fluid

dm = Inside diameter

t = Wall thickness and time

Q = Qapacity

Rn = Reynold number

n = viscocity

hs = head static

hp = head pressure

hv = head velocity

hf = head friction

hl = head losses

H = head total

4 DESIGN PARAMETER

4.1 The summary of Doc. No. 11 - 42 09 050 - BG

NO CALCULATION SYMBOL RESULT

1 inside diameter of bilge pipe dH 8.75 inches

2 inside diameter branch bilge line dZ 4.97 inches

3 capacity of bilge pump Q 283.83

4 head total pump H 24.46 m

Bilge Pump Specification

Merk = Hyundai

Type = HCP300

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

In this document, we will design a bilge system in the engine room. In the engine room, we will find an leakage of oil that became from any machinery and pipe. Therefore, the oily bilge system is designed automatically operate as the primary bilge system in the engine room spaces. We need to consider about the mixed of oil and water in the engine room. We can not sent the water out if that has an oil, according to Marine Pollution statutory. And then we need a Oily Water Separator (OWS). Where, its function is to separate the water from oil content up to 15 ppm. In OWS it has an oily content monitor to control the content of oil in the water. If the content of oil in the water less than 15 ppm, we can sent the water out thorugh the overboard, if more than 15 ppm, the OWS system will sent the mixed to the sludge tank to have a circulating again, and the oil that sent to the sludge tank will be sent to the shore.

The purpose of this document is to design the bilge system in the engine room with oily water separator (OWS) system.

m3/h

Page 8: BOOK 12 [BGO]

Page 8 of 30

Qapacity = 1800 m3/h

Head = 150 m

Frequency = 60 Hz

Power = 125 kW

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

4.2 Main Engine

1. BHP = 6320 kW

2. SFOC = 173 gr/kWh

= 0.991

4. Time 1 trip = 4 days

5 DESIGN REQUIREMENT

5.1 PUMP

- Oily Bilge Pump

i. head static

ii. head pressure (the pressure in the suction and discharge has the same value)

iii. head velocity (the velocity in the suction and discharge has the same value)

iv. head losses

viscocity (n) = 1.1

=

= 0.0000011

Reynold number (Rn)

Rn = (vs*ds)/n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(1)

l = 0.02+0.0005/D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(2)

Mayor losses (hf)

hf = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(3)

Minor losses

hl = k total*v2/(2g). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(4)

Therefore, the total of Heads are:

H = hs+hv+hp+hf1+hf2+hl1+hl2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(5)

- Pump Capacity

The capacity of bilge pump to be arranged = 50

Volume of Slude Tank

V = K x C x D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(6)

CFO = P main engine x SFOC x T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(7)

VDO = 0.15 X CFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (8)

- Type of Pump

Gear Pump

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

3. ρ HFO ton/m3

cst in 50oC n/106

m2/s

l*L*v2/(D*2g)

m3/h

Accroding to ANEX I MARPOL 73/78 chapter II Regulation 17, the sludge tank capacity can be calculated by the following formula below:

This is the simple rotary positive displacement pumps. It consist of two meshed gears rotating in a closely fitted casing. Fluid is pumped around the outer periphery by being trapped in the tooth spaces. It does not travel back on the meshed part, since the teeth mesh closely in the centre. The example will be given by Figure 1.1 Gear Pump below.

Page 9: BOOK 12 [BGO]

Page 9 of 30

Figure 1.1 Gear Pump

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

5.2 Valve and Fitting

a. Type

In oily-water bilge system will be used valve and fitting such as;

1. Butterfly Valve

Figure 5.3 Butterfly Valve

2. Remotely Butterfly Valve

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk, which allows for quick shut off. Butterfly valve are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. Used for stop valve only, for low working pressure. In this system, butterfly valve used in order before the pump, and as a connecting to another equipment to make a standby function. Below is the example of butterfly valve, shown in Figure 5.3 Butterfly Valve.

Remotely Butterfly Valve has the same function with butterfly valve but in this valve has remote as an automation control. It can be controled from another place to make it work automatic. This valve need another system in automation and cost especialy. In this system, remotely butterfly valve used in stripping system in each cargo oil tank. Because the hard acces situation and then need an automation system according to the safety conditon.

Page 10: BOOK 12 [BGO]

Page 10 of 30

3. Non Return Valve

4. Three Way Valve and Angle Valve

As a connect of pipe with simple used.

5. Filter

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

Figure 5.4 Centrifugal Filter

b. Class Recommendation

- Bilge Suction and Strums

Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-36, 1.3

- Bilge Valves

Remotely Butterfly Valve has the same function with butterfly valve but in this valve has remote as an automation control. It can be controled from another place to make it work automatic. This valve need another system in automation and cost especialy. In this system, remotely butterfly valve used in stripping system in each cargo oil tank. Because the hard acces situation and then need an automation system according to the safety conditon.

Has same function with globe valve, working in very high pressure and just has one-way direction. Usually this valve is used in order after the pump and another lines that the fluids shall not back through the same line or just one-way direction.

Hyraulic filters are very useful for removing solid contamination from lube and fuel oil system of marine machinery. Withous filters in the lube or fuel oil system, the machinery internal parts, bearing, piston, rings, liners etc. can get damaged, which will result in inefficient working of the machinery. In this system will be used Centrifugal Filter. These filters work on the principal of centrifugal force removing high density fluids and impurity from the oil. It is normally used for lube oil systems. Most of the auxiliary engines have attaced centrifugal filters. The example will be shown in Figure 5.4 Centrifugal Filter below.

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

Bilge suction are to be arranged as not to impede the cleaning of bilges and bilge well. They are to be fitted with easily detachable, corrosion resistant strums. Emergency bilge suction are to be arranged such that they are accesible, with free flow and at suitable distance from the tank top or the ship's bottom. For the size and design of bilge well, will refer to GL Rules for Hull Structure (I-1-1), Section 8, B.5.3. Bilge wells shall have a capacity of more than 0,2 m³.Small holds may have smaller bilge wells. For the use of manhole covers or hinged covers for the access to the bilge suctions, see Chapter 2 – Machinery Installations, Section 11.

Page 11: BOOK 12 [BGO]

Page 11 of 30

Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-36, 1.4

- Reverse-Flow Protection

Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-36, 1.5

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

6 SUMMARY

NO CALCULATION SYMBOL RESULT

1 Head Total H 27.228 m

2 Inside Diameter Dm 97.18 m

3 Volume Bilge Well 1.08

4 Volume Oil Waste Tank 4.5

5 Volume Sludge Tank 1.83

Pipe selection according to ANSI

Inside diameter (dm) = 97.18 mm

Thickness = 8.5598 mm

Outside diameter = 105.7398 mm

Nominal pipe size = 4

Oily Bilge Pump

Merk = Iron Pump

Type = ON-V : 50/10

Capacity = 53

Head = 35 m

Rpm = 950 rpm

Power = 12 HP

= 8.82 kW

Valves in connecting pipes between the bilge and the seawater and ballast water system, as well as between the bilge connections of different compartments, are to be so arranged that even in the event of faulty operation or intermediate positions of the valves, penetration of seawater through the bilge system will be safely prevented. Bilge discharge pipes are to be fitted with shut-off valves at the ship's shell. Bilge valves are to be arranged so as to be always accessible irrespective of the ballast and loading condition of the ship.

A screw-down non-return valve or a combination of a non-return valve without positive meansof closing and a shut-off valve are recognized as reverse flow protection.

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

m3

m3

m3

m3/h

Page 12: BOOK 12 [BGO]

Page 12 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 02

: Philosopy

In this document, we will design a bilge system in the engine room. In the engine room, we will find an leakage of oil that became from any machinery and pipe. Therefore, the oily bilge system is designed automatically operate as the primary bilge system in the engine room spaces. We need to consider about the mixed of oil and water in the engine room. We can not sent the water out if that has an oil, according to Marine Pollution statutory. And then we need a Oily Water Separator (OWS). Where, its function is to separate the water from oil content up to 15 ppm. In OWS it has an oily content monitor to control the content of oil in the water. If the content of oil in the water less than 15 ppm, we can sent the water out thorugh the overboard, if more than 15 ppm, the OWS system will sent the mixed to the sludge tank to have a circulating again, and the oil that sent to the sludge tank will be sent to the shore.

The purpose of this document is to design the bilge system in the engine room with oily water separator

Page 13: BOOK 12 [BGO]

Page 13 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 02

: Philosopy

(the pressure in the suction and discharge has the same value)

(the velocity in the suction and discharge has the same value)

Accroding to ANEX I MARPOL 73/78 chapter II Regulation 17, the sludge tank capacity can be calculated

This is the simple rotary positive displacement pumps. It consist of two meshed gears rotating in a closely fitted casing. Fluid is pumped around the outer periphery by being trapped in the tooth spaces. It does not travel back on the meshed part, since the teeth mesh closely in the centre. The example will be given by

Page 14: BOOK 12 [BGO]

Page 14 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 02

: Philosopy

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk, which allows for quick shut off. Butterfly valve are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. Used for stop valve only, for low working pressure. In this system, butterfly valve used in order before the pump, and as a connecting to another equipment to make a standby function. Below is the example of butterfly valve, shown in Figure

Remotely Butterfly Valve has the same function with butterfly valve but in this valve has remote as an automation control. It can be controled from another place to make it work automatic. This valve need another system in automation and cost especialy. In this system, remotely butterfly valve used in stripping system in each cargo oil tank. Because the hard acces situation and then need an automation system according to the safety conditon.

Page 15: BOOK 12 [BGO]

Page 15 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 02

: Philosopy

Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-36, 1.3

Remotely Butterfly Valve has the same function with butterfly valve but in this valve has remote as an automation control. It can be controled from another place to make it work automatic. This valve need another system in automation and cost especialy. In this system, remotely butterfly valve used in stripping system in each cargo oil tank. Because the hard acces situation and then need an automation system according to the safety conditon.

Has same function with globe valve, working in very high pressure and just has one-way direction. Usually this valve is used in order after the pump and another lines that the fluids

Hyraulic filters are very useful for removing solid contamination from lube and fuel oil system of marine machinery. Withous filters in the lube or fuel oil system, the machinery internal parts, bearing, piston, rings, liners etc. can get damaged, which will result in inefficient working of the machinery. In this system will be used Centrifugal Filter. These filters work on the principal of centrifugal force removing high density fluids and impurity from the oil. It is normally used for lube oil systems. Most of the auxiliary engines have attaced centrifugal filters. The example will

Bilge suction are to be arranged as not to impede the cleaning of bilges and bilge well. They are to be fitted with easily detachable, corrosion resistant strums. Emergency bilge suction are to be arranged such that they are accesible, with free flow and at suitable distance from the tank top or the ship's bottom. For the size and design of bilge well, will refer to GL Rules for Hull Structure (I-1-1), Section 8, B.5.3. Bilge wells shall have a capacity of more than 0,2 m³.Small holds may have smaller bilge wells. For the use of manhole covers or hinged covers for the access to the bilge

Page 16: BOOK 12 [BGO]

Page 16 of 30

Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-36, 1.4

Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-36, 1.5

: DESIGN IV

: 12 - 42 09 050 - BG

: 02

: Philosopy

Valves in connecting pipes between the bilge and the seawater and ballast water system, as well as between the bilge connections of different compartments, are to be so arranged that even in the event of faulty operation or intermediate positions of the valves, penetration of seawater through the bilge system will be safely prevented. Bilge discharge pipes are to be fitted with shut-off valves at the ship's shell. Bilge valves are to be arranged so as to be always accessible irrespective of the

A screw-down non-return valve or a combination of a non-return valve without positive meansof closing and a shut-off valve are recognized as reverse flow protection.

Page 17: BOOK 12 [BGO]

DESAIN-IV: MACHINERY BASIC DESIGN

ATTACHMENT NO. 01

CALCULATION

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

Page 18: BOOK 12 [BGO]
Page 19: BOOK 12 [BGO]

DESAIN-IV: MACHINERY BASIC DESIGN

ATTACHMENT NO. 01

CALCULATION

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

Page 20: BOOK 12 [BGO]
Page 21: BOOK 12 [BGO]

Page 21 of 30

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 01

Type : Attachment No. 01

1. Oily Bilge Pump

i. head static = 9.55 m

ii. head pressure = 0 m (the pressure in the suction and discharge has the same value)

iii. head velocity = 0 m (the velocity in the suction and discharge has the same value)

iv. head losses

a. suction

viscocity (n) = 1.1

=

= 0.0000011

Reynold number (Rn)

Rn = (vs*ds)/n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(1)

= (2.5*(222.176*10^-3))/0.0000011

= 504945.5

l = 0.02+0.0005/D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(2)

= 0.02+0.0005/222.176*10^-3

= 0.022

Mayor losses (hf)

hf = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(3)

where,

L = the length of suction pipe

= 17 m

for the result

hf =

= 0.022*17*(2.5^2)/((222.176*10^-3)*2*9.8)

= 0.54 m

Minor losses (hl)

No Types n k nxk

1 anggle v/v 1 1.05 1.05

2 butterfly v/v 6 0.86 5.16

3 17 0.57 9.69

4 Filter 7 1.5 10.5

5 SDNRV 6 1.23 7.38

6 T connection 4 1.14 4.56

7 Three way valve 4 0.57 2.28

total 40.62

minor losses = k total*v2/(2g) . . . . (4)

= 40.62*(2.5^2)/(2*9.8)

= 12.953 m

b. discharge

Minor losses (hl)

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

cst in 50oC n/106

m2/s

For the frictional losses (l) will be determned if the value of reynold number <2300 will be used formula Re/64, and if not the following formula is 0.02+0.0005/D

l*L*v2/(D*2g)

l*L*v2/(D*2g)

Elbow 90o

Page 22: BOOK 12 [BGO]

Page 22 of 30

No Types n k nxk

1 anggle v/v 2 1.05 2.1

2 butterfly v/v 6 0.86 5.16

3 0 0.57 0

4 Filter 0 1.5 0

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 01

Type : Attachment No. 01

No Types n k nxk

5 SDNRV 2 1.23 2.46

6 T connection 1 1.14 1.14

7 Three way valve 1 0.57 0.57

total 11.43

minor losses = k total*v2/(2g)

= 11.43*(2.5^2)/(2*9.8)

= 3.645 m

Therefore, the total of Heads are:

H = hs+hv+hp+hf1+hf2+hl1+hl2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(5)

= 9.55+0+0+0.54+0.54+12.953+3.645

= 27.228 m

2. Pump Capacity

The capacity of bilge pump to be arranged = 50

= 0.0138888889

Inside diameter (dm) = (50*(10^3)/5.75)^0.5

= 93.25 mm

Pipe selection according to ANSI

Inside diameter (dm) = 97.18 mm

Thickness = 8.5598 mm

Outside diameter = 105.7398 mm

Nominal pipe size = 4

3. Power of Pump

Oily Bilge Pump

Merk = Iron Pump

Type = ON-V : 50/10

Capacity = 53

Head = 35 m

Rpm = 950 rpm

Power = 12 HP

= 8.82 kW

4. Volume of Bilge Well

The design of dimension

Legth = 0.6 m

Breadth = 0.6 m

Depth = 0.5 m

Volume = 0.18

Elbow 90o

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

m3/h

m3/s

m3/h

m3

Page 23: BOOK 12 [BGO]

Page 23 of 30

Will be planned 6 bilge wells, therefore the total volume = 1.08

5. Volume of Oily Waste Collecting Tank

The design of dimension

Legth = 1.8 m

Breadth = 2.5 m

Depth = 1 m

Volume = 4.5

6. Volume of Slude Tank

V = K x C x D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(6)

Project : DESIGN IV

Doc. No : 12 - 42 09 050 - BG

Rev.No : 01

Type : Attachment No. 01

where,

K = 0.015,that used HFO fuel and purifier

0.005, that used MDO fuel or HFO without purifier

C = daily fuel consumption

γ FO = 0.991. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(7)

CFO = P main engine x SFOC x T

= 6320*173*24*10^-6

= 26.24064 ton

VFO = 26.47895

VDO = 0.15 X CFO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(8)

= 0.15*26.479

= 4

volume total = VFO+VDO

= 26.479+4

= 30.48

D = the day time of one trip

for the result:

V = K x C x D

= 0.015*30.48*4

= 1.8288

m3

m3

Accroding to ANEX I MARPOL 73/78 chapter II Regulation 17, the sludge tank capacity can be calculated by the following formula below:

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

[m3]

Ton/m3

m3

m3

m3

m3

Page 24: BOOK 12 [BGO]

Page 24 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 01

: Attachment No. 01

(the pressure in the suction and discharge has the same value)

(the velocity in the suction and discharge has the same value)

For the frictional losses (l) will be determned if the value of reynold number <2300 will be used

Page 25: BOOK 12 [BGO]

Page 25 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 01

: Attachment No. 01

Page 26: BOOK 12 [BGO]

Page 26 of 30

: DESIGN IV

: 12 - 42 09 050 - BG

: 01

: Attachment No. 01

Accroding to ANEX I MARPOL 73/78 chapter II Regulation 17, the sludge tank capacity can be calculated by the

Page 27: BOOK 12 [BGO]

DESAIN-IV: MACHINERY BASIC DESIGN

ATTACHMENT NO. 02

BILGE OIL PUMP SPECIFICATION

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

Page 28: BOOK 12 [BGO]
Page 29: BOOK 12 [BGO]

DESAIN-IV: MACHINERY BASIC DESIGN

ATTACHMENT NO. 02

BILGE OIL PUMP SPECIFICATION

TECHNICAL SPECIFICATION OF OILY WATER SEPARATOR (OWS) SYSTEM

Page 30: BOOK 12 [BGO]