MEP Series: Volume 2 Part 18: The Operation and Maintenance of Machinery in Motorships, 2020 Ed.

Published: September 2020

This publication is a guide to the operation and maintenance of machinery in motorships. Topics covered include:

• Machinery arrangements
• main propulsion, auxiliary and electrical machinery
• boilers and boiler water treatment
• waste treatment and disposal.

Many changes have taken place within the marine industry due to the rapid advances in technology, particularly in engine design and shipboard practice. Medium speed engines have become larger and are installed as main propulsion engines in larger ships, particularly passenger ships. These engines are highly rated and can burn high viscosity residual fuels. Slow speed crosshead engines have also changed and tend to be long stroke, uniflow scavenged with a central exhaust valve. While medium speed builders have added larger engines to their range, slow speed manufacturers have produced smaller bore models. Engine builders have also merged to provide a wider range of engines while remaining competitive.

Table of Contents

Acknowledgement

Introduction

1 Machinery Arrangements

1.1 Choice of Optimum Engine Type

1.2 Layout Diagrams and Load Diagrams

1.2.1 Layout Diagram

1.2.2 Load Diagram

1.3 Propulsion Machinery – Two and Four Stroke Engines

2 Main Propulsion Machinery – Operation and Maintenance

2.1 General

2.2 Running Gear

2.2.1 Cylinder Heads

2.2.2 Inlet and Exhaust Valves

2.2.3 Pistons

2.2.4 Cylinder Liners

2.2.5 Fuel Injectors

2.2.6 Fuel Injection Pumps

2.2.7 Indicator Diagrams

2.2.8 Bearings

2.2.9 Crankshaft Deflections and Crankcase Inspection

2.2.10 Crankcase Explosions

2.2.11 Bedplates and Frames

2.2.12 Gears and Gearboxes

2.3 Turbochargers and Air Coolers

2.3.1 Turbochargers

2.3.2 Turbocharger Surging

2.3.3 Turbocharger Deposits and Cleaning

2.3.4 Turbocharger Defects

2.3.5 Air Coolers and Cleaning

2.3.6 Scavenge Fires

2.4 Fuels and Bunkering

2.4.1 Fuels
2.4.2 Bunkering 119

2.5 Preparing for Sea and Arrival in Port

2.5.1 Preparing for Sea

2.5.2 Preparing for Arrival in Port

2.6 Watchkeeping and UMS Operation

2.7 Performance and Condition Monitoring

2.7.1 Performance Monitoring

3 Auxiliary Machinery

3.1 Pumps

3.1.1 Positive Displacement Pumps

3.1.2 Centrifugal Pumps

3.1.3 General Pump Maintenance

3.2 Centrifugal Separators

3.3 Heat Exchangers

3.4 Fresh Water Generator

3.5 Refrigerating and Air Conditioning Plant

4 Boilers and Boiler Water Treatment

4.1 Auxiliary Boilers and Burners

4.1.1 Boiler Burners

4.2 Exhaust Gas Boilers

4.2.1 Uptake Fires

4.3 Boiler Maintenance and Inspection

4.4 Feed Water Treatment

4.5 Thermal Fluid Systems

5 Electrical Machinery

5.1 General

5.2 AC Motors and Generators

5.2.1 Faults and Effects

5.3 Batteries

5.4 Protective Devices

5.5 Loss of Power

5.6 Earth Faults

5.7 Hazardous Area

5.7.1 Maintenance of Electrical Equipment

5.8 Shore Supply

6 Waste Treatment and Disposal

6.1 Waste Generation

6.2 MARPOL Regulations

6.3 Waste Disposal

6.4 Oily Water Separator Systems

6.5 Sewage Plant

List of Abbreviations

Table of Conversions

Index