book 11 (bgw)

ATTACHMENT NO. 01 02 - -

NUMBER OF PAGES 3 2 - -

DOCUMENT NO. DOC. NO. 11 - 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 BILGE SYSTEM

- -

- -

DOC. NO. 11 - 42 09 050 - BG

Ir. Hari Prastowo, MSc.

APPROVED BY


DESIGN-IV: MACHINERY BASIC DESIGN TECHNICAL SPECIFICATION OF BILGE SYSTEM

Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 01

Type : Table of Contents

TABLE OF CONTENTS

PHILOSOPHY DOCUMENTS

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

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

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

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

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

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

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

5.1 PIPING SYSTEM CLASS REQUIREMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 VALVE AND FITTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

LIST OF TABLES

Table 4.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ATTACHMENT NO. 01 - CALCULATION

1. Inside Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Branch Bilge Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Bilge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Head Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. The Power of Pump and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ATTACHMENT NO. 02 - PUMP SPECIFICATION

TECHNICAL SPECIFICATION OF BILGE SYSTEM

: DESIGN IV

: 11 - 42 09 050 - BG

: 01

: Table of Contents

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Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

1 INTRODUCTION

1.1 Description

Bilge system on tanker are divided on two parts, as follows :

a. Clean Bilge System

b. Oily Bilge System

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

dH = calculated inside diameter of main bilge pipe [mm]

l1 =

B = moulded breadth of ship [m]

H = depth of ship to the bulkhead deck [m]

dZ = inside diameter of branch bilge line [mm]

l = length of watertight compartment [m]

b = maximum breadth of cargo tanks [m]

h = maximum depth of cargo tanks [m]

lT = length of tanks in the watertight compartment [m]

Q = minimum capacity

4 DESIGN PARAMETER

The calculation summary based on document number : DOC. NO. 08 - 42 09 050 - CS

For the pump selection and spesification:


Bilge system is used as protection in ship, to solve problem that caused by leakage in every system that contains fluid. This system will needed an arrangement of bilge lines, pipe laid through tanks, bilge suction and sturms, bilge valves, reverse flow protection, and pipe layout.

To drain and sent out the water which caused of leaked in operation system or instllation. Those are usually from ships hull and condensation of air control. The water that doesn’t mix with oil can be pumped to overboard using bilge pumps.

While the process of loading and unloading in ship, the cargo pumps will not be able to sent out clearly the load in each tank. That will be need the operation of bilge system, in tanker the stripping system can be used as bilge system, because it has the same function. But for the oil that come out or leakage, we need to make a bilge system design such as in the engine room. That can be caused by the leakage of fuel pipe, lubricating pump or another system that has been installed in the engine room. All the leakage oil will be sent to bilge well and absorbed using separated pumps with bilge pump to clean the bilge system. Oil bilge pump will be used in this design.

The purpose of this document is to design the appropriate bilge system from the calculation of the needed equipments.

total length of spaces between cofferdam or pump-room bulkhead and stern tube bulkhead [m]

[m3/h]

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Merk = Hyundai Merk = Sterling

Type = HCP300 Type = TKH15302

Qapacity = 1800 Qapacity = 130

Head = 150 m Head = 30 m

Frequency = 60 Hz Frequency = 60 Hz

Power = 125 kW Power = 30 kW

Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

Table 4.3 Summary of Doc. No. 08 - 42 09 050 - CS

NO CALCULATION SYMBOL RESULT

LOADING AND UNLOADING SYSTEM

1 Area of pump A 0.193

2 Pump qapacity Q 1733.4003 Time for loading or unloading t 7.076 hours4 Head static hs 7.000 m5 Head pressure hp 0.000 m6 Head velocity hv 0.000 m7 Reynold number Rn 1125681.8188 Frictional losses l 0.0219 Head friction1 hf 1.690 m

10 Head losses1 hl 3.163 m11 Head friction2 hf 1.690 m12 Head losses2 hl 2.350 m13 Head total H 15.893 m

STRIPPING SYSTEM

14 Stripping volume vs 245.308

15 Stripping pump qapacity Q 122.65516 Inside diameter of pipe D 5.182 inches17 Frictional losses l 0.02218 Head friction1 hf 4.145 m19 Head losses1 hl 3.16 m20 Head friction2 hf 4.145 m21 Head losses2 hl 2.350 m22 Head total H 20.813 m

5 DESIGN REQUIREMENT

5.1 PIPING SYSTEM CLASS REQUIREMENT

a. Diameter

dH = 3.0*(((B+H)*l1)^0.5)+35 [mm]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(1)

where,


l1 =

m3/h m3/h


m2

m3/h

m3

m3/h

The diameter of the main bilge pipe in the engine rooms of tankers and bulk cargo/oil carriers is calculated using the formula:


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Germanisher Loyd, Chapter 2, Section 11 - Piping Systems, Valves and Pumps Page 11-37, 2.1

b. Branch bilge line are calculated as follows:

dZ = 2.15*(((B+H)*l)-(b+h)*lT)^0.5)+25 [mm]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(2)

where,





Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy


Table 4.1 Minimum wall thickness group


The inside diameter of main and branch bilge pipes is not to be less than 50 mm. For ships under 25 m length, the diameter may be reduced to 40 mm.

Germanisher Loyd, Chapter 2, Section 15 - Special Requirements for Tankers, Page 11-37, 3.1

Bilge lines and bilge suctions are to be so arranged that the bilges can be completely drained even under unfavourable trim conditions. Bilge suctions are normally to be located on both sides of the ship. For compartments located fore and aft in the ship, one bilge suction may be considered sufficient provided that it is capable of completely draining the relevant compartment. Spaces located forward of the collision bulkhead and aft of the stern tube bulkhead and not connected to the general bilge system are to be drained by other suitable means of adequate capacity. The require pipe thickness of bilge line is to be in accordance with table 4.1.

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Pipe Laid Through Tanks


Pipe Layout


Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

c. Material

d. Pipe Class and Thckness

Class II or III

Category M (located in cargo holds) and category D (located in ballast water tank)

5.2 PUMP

a. Type

Centrifugal Pump

Bilge pipes may not be led through tanks lubricating oil, thermal oilm drinking water or feed water. Bilge pipe from spaces not accessible during voyage if running through fuel tanks located above double bottom are to be fitted with a non return valve directly at the point of entry into the tank.

To prevent the ingress of ballast and seawater into the ship through the bilge system twomeans of reverse-flow protection are to be fitted in the bilge connections. One of such means of protection is to be fitted in each suction line. Where a direct seawater connection is arranged for attached bilge pumps to protect them against running dry, the bilge suctions are also to befitted with two reverse flow protecting devices. The discharge lines of oily water separators are to be fitted with a reverse flow protecting valve at the ship's side.


Steel Galvanized Pipe or Cast Iron accepted for temperatures up to 350 0C

A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure and flow rate of a fluid. Centrifugal pumps are the most common type of pump used to move liquids through a piping system. The fluid enters the pump impeller along a near to the rotating axis and is accelerated are typically used for large discharge through smaller heads. The example will be given by Figure 1.3 Centrifugal Pump below.

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Figure 1.3 Centrifugal Pump

b. Class Requirement

- Capacity of bilge pump

Q = 5.75*(10^-3)*dH^2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(3)

where,



Germanisher Loyd, Chapter 2, Section 11 - Special Requirements for Tankers, Page 15-4, 4.1.3

-


Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

5.3 VALVE AND FITTINGS

a. Butterfly Valve

[m3/h]

[m3/h]

Bilge pumping equipment is to be located in the cargo area to serve the cargo pump rooms and cofferdams. A cargo pump may also be used as a bilge pump. On oil tankers used exclusively for the carriage of flammable liquids with flash points above 60 °C, cargo pump rooms and cofferdams may be connected to the engine room bilge system. Where a cargo pump is used as bilge pump, measures are to be taken, e.g. by fitting screw-down non-return valves, to ensure that cargo cannot enter the bilge system. Where the bilge line can be pressurised from the cargo system, an additional non-return valve is to be fitted.


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.

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Figure 5.3 Butterfly Valve

b. Non Return Valve

c. Filter

Water Filter

- Bilge Line Filter

d. Class Requirements

- Bilge Suction and Strums


Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 02

Type : Philosopy

- Bilge Valves


- Reverse-Flow Protection


6 SUMMARY

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.

The sea water and fresh water systems on board ship are provided with line filters in order to trap the solid impurities flowing in the system. Normally the sea water sides has more number of filters incorporated in the line as compared to the fresh water system as the later is a closed system. The different applications for water filters are:

All the bilge well suctions are provided with a strainer as the well containts the maximum solid contamination. The filter may have a bucket screen or a plate screen to trap solid impurities.

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.


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.

of 34

NO CALCULATION SYMBOL RESULT

1 inside diameter of bilge pipe dH 8.747 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 = Taiko

Type = EHS251C

Qapacity = 285

Head = 25 m

RPM = 1800 rpm

Power = 37 kW

m3/h

m3/h

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: DESIGN IV

: 11 - 42 09 050 - BG

: 02

: Philosopy

calculated inside diameter of main bilge pipe [mm]

moulded breadth of ship [m]

depth of ship to the bulkhead deck [m]

Bilge system is used as protection in ship, to solve problem that caused by leakage in every system that contains fluid. This system will needed an arrangement of bilge lines, pipe laid through tanks, bilge

To drain and sent out the water which caused of leaked in operation system or instllation. Those are usually from ships hull and condensation of air control. The water that doesn’t mix with oil can be

While the process of loading and unloading in ship, the cargo pumps will not be able to sent out clearly the load in each tank. That will be need the operation of bilge system, in tanker the stripping system can be used as bilge system, because it has the same function. But for the oil that come out or leakage, we need to make a bilge system design such as in the engine room. That can be caused by the leakage of fuel pipe, lubricating pump or another system that has been installed in the engine room. All the leakage oil will be sent to bilge well and absorbed using separated pumps with bilge pump to clean the bilge system. Oil bilge pump will be used in this design.

The purpose of this document is to design the appropriate bilge system from the calculation of the needed

total length of spaces between cofferdam or pump-room bulkhead and stern tube

of 34

: DESIGN IV

: 11 - 42 09 050 - BG

: 02

: Philosopy

The diameter of the main bilge pipe in the engine rooms of tankers and bulk cargo/oil carriers is


of 34


: DESIGN IV

: 11 - 42 09 050 - BG

: 02

: Philosopy

Table 4.1 Minimum wall thickness group

The inside diameter of main and branch bilge pipes is not to be less than 50 mm. For ships

Germanisher Loyd, Chapter 2, Section 15 - Special Requirements for Tankers, Page 11-37,

Bilge lines and bilge suctions are to be so arranged that the bilges can be completely drained even under unfavourable trim conditions. Bilge suctions are normally to be located on both sides of the ship. For compartments located fore and aft in the ship, one bilge suction may be considered sufficient provided that it is capable of completely draining the relevant compartment. Spaces located forward of the collision bulkhead and aft of the stern tube bulkhead and not connected to the general bilge system are to be drained by other suitable means of adequate capacity. The require pipe thickness of bilge line is to be in accordance with

of 34




: DESIGN IV

: 11 - 42 09 050 - BG

: 02

: Philosopy

Category M (located in cargo holds) and category D (located in ballast water tank)

Bilge pipes may not be led through tanks lubricating oil, thermal oilm drinking water or feed water. Bilge pipe from spaces not accessible during voyage if running through fuel tanks located above double bottom are to be fitted with a non return valve directly at the point of entry into the tank.

To prevent the ingress of ballast and seawater into the ship through the bilge system twomeans of reverse-flow protection are to be fitted in the bilge connections. One of such means of protection is to be fitted in each suction line. Where a direct seawater connection is arranged for attached bilge pumps to protect them against running dry, the bilge suctions are also to befitted with two reverse flow protecting devices. The discharge lines of oily water separators are to be

A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure and flow rate of a fluid. Centrifugal pumps are the most common type of pump used to move liquids through a piping system. The fluid enters the pump impeller along a near to the rotating axis and is accelerated are typically used for large discharge through smaller heads. The example will be given

of 34




: DESIGN IV

: 11 - 42 09 050 - BG

: 02

: Philosopy

Bilge pumping equipment is to be located in the cargo area to serve the cargo pump rooms and cofferdams. A cargo pump may also be used as a bilge pump. On oil tankers used exclusively for the carriage of flammable liquids with flash points above 60 °C, cargo pump rooms and cofferdams may be connected to the engine room bilge system. Where a cargo pump is used as bilge pump, measures are to be taken, e.g. by fitting screw-down non-return valves, to ensure that cargo cannot enter the bilge system. Where the bilge line can be pressurised from the cargo system, an additional

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

of 34


: DESIGN IV

: 11 - 42 09 050 - BG

: 02

: Philosopy



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

The sea water and fresh water systems on board ship are provided with line filters in order to trap the solid impurities flowing in the system. Normally the sea water sides has more number of filters incorporated in the line as compared to the fresh water system as the later is a closed system. The

All the bilge well suctions are provided with a strainer as the well containts the maximum solid contamination. The filter may have a bucket screen or a plate screen to trap solid impurities.

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

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.

DESAIN-IV: MACHINERY BASIC DESIGN

ATTACHMENT NO. 01

CALCULATION


of 34

Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 01

Type : Attachment No. 01

1.

dH = 3.0*(((B+H)*l1)^0.5)+35 [mm]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(1)

where,


l1 =

= 122.8 m


= 20.2 m


= 11.5 m


for the result:

dH = 3.0*(((B+H)*l1)^0.5)+35 [mm]

= 3.0*(((20.2+11.5)*122.8)^0.5)+35

= 222.176 mm

= 8.747 inches

According to ANSI we can choose the pipe:

Inside diameter = 8.75 inches

Wall thickness = 1.1 inches

Outside diameter = 10.75 inches

Pipe size = 10 inches

Schedule no. = 140 inches

2. Branch bilge line are calculated as follows:

dZ = 2.15*(((B+H)*l)-(b+h)*lT)^0.5)+25 [mm] (2)

where,



= 82.6 m


= 18.2 m


= 10.1 m


= 14 m


for the result:

dZ = 2.15*(((B+H)*l)-(b+h)*lT)^0.5)+25 [mm]

= 2.15*(((20.2+11.5)*82.6)-(18.2+10.1)*14)^0.5)+25

= 126.35 mm


The diameter of the main bilge pipe in the engine rooms of tankers and bulk cargo/oil carriers is calculated using the formula:


The inside diameter of main and branch bilge pipes is not to be less than 50 mm. For ships under 25 m length, the diameter may be reduced to 40 mm.

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= 4.97 inches

According to ANSI we can choose the pipe:

Inside diameter = 5.047 inches

Wall thickness = 0.258 inches

Outside diameter = 5.563 inches

Pipe size = 5 inches

Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 01


3. Bilge Pump

Capacity of bilge pump

Q = 5.75*(10^-3)*dH^2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(3)

where,




for the result:

Q = 5.75*(10^-3)*dH^2

= 5.75*(10^-3)*(222.176)^2

= 283.833

4. Head Pump

i. Head static of pump (ha) from the general arrangement drawing we can find:

The distance between bilge suction well to overboard

hs = T+0.75 m

= 9.55 m

ii. Head pressure of pump (hp)

hp = 0 m

pressure in the both suction and discharge is to be arranged in the same value

iii. Head velocity (hv)

hv = 0 m

iv. Head in suction pipe

viscocity (n) = 1.1

=

= 0.0000011

Reynold number (Rn)

Rn = (vs*ds)/n

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

= 504945.5

l = 0.02+0.0005/D

= 0.02+0.0005/222.176*10^-3

= 0.022

Mayor losses (hf)

hf =

where,


[m3/h]

[m3/h]

[m3/h]

m3/h

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)

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L = the length of suction pipe

= 75 m

for the result:

hf =

= 0.022*75*(2.5^2)/((222.176*10^-3)*2*9.8)

= 2.37 m

Minnor losses (hl)

No Types n k nxk

1 Butterfly valve 5 0.86 4.3

2 4 0.57 2.28

3 Flange 7 0.87 6.09

4 Flexible coupling 6 0.46 2.76

Project : DESIGN IV

Doc. No : 11 - 42 09 050 - BG

Rev.No : 01


Minnor losses (hl)

No Types n k nxk

5 SDNRV 0 1.23 0

6 SDNRV remotely 1 1.35 1.35

7 Strainer 3 1.5 4.5

8 T connection 2 1.14 2.28

total 23.56

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

= 23.56*(2.5^2)/(2*9.8)

= 7.513 m

v. Head in discharge pipe

Minnor losses (hl)

No Types n k nxk

1 Butterfly valve 0 0.86 0

2 0 0.57 0

3 Flange 0 0.87 0

4 Flexible coupling 0 0.46 0

5 SDNRV 4 1.23 4.92

6 SDNRV remotely 0 1.35 0

7 Strainer 0 1.5 0

8 T connection 3 1.14 3.42

total 8.34

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

= 8.34*(2.5^2)/(2*9.8)

= 2.659 m

Therefore, the total of Heads are:

H = hs+hv+hp+hf1+hf2+hl1+hl2

= 9.55+0+0+2.37+2.37+7.513+2.659

= 24.46 m

5. The Power of Pump and Motor

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

Elbow 90o


Elbow 90o

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Required:

Head = 24.46 m

Capacity = 283.833

Merk = Taiko

Type = EHS251C

Qapacity = 285

Head = 25 m

RPM = 1800 rpm

Power = 37 kW

m3/h

m3/h

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: DESIGN IV

: 11 - 42 09 050 - BG

: 01

: Attachment No. 01


moulded breadth of ship [m]

depth of ship to the bulkhead deck [m]



The diameter of the main bilge pipe in the engine rooms of tankers and bulk cargo/oil carriers is


The inside diameter of main and branch bilge pipes is not to be less than 50 mm. For ships under 25

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: DESIGN IV

: 11 - 42 09 050 - BG

: 01

: Attachment No. 01



pressure in the both suction and discharge is to be arranged in the same value

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

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: DESIGN IV

: 11 - 42 09 050 - BG

: 01

: Attachment No. 01

DESAIN-IV: MACHINERY BASIC DESIGN

ATTACHMENT NO. 02

PUMP SPECIFICATION


book 11 (bgw)

Documents

bulk cargooil

stern tube

branch bilge

machinery

branch bilge

main bilge

cargo pump

bilge line