Page 406 - Practical Design Ships and Floating Structures

Practical Design of Ships and Other Floating Structures 381
You-Sheng Wu, Wei-Cheng Cui and Guo-Jun Zhou (Eds)
0 2001 Elsevier Science Ltd. All rights reserved

ENERGY AND ENVIRONMENT DIMENSION
IN SHIP MANUFACTURING PROCESSES

M. A. Sharna
Department of Naval Architecture and Marine Engineering
Faculty of Engineering, Alexandria University, Alexandria 2 1544, Egypt

ABSTRACT
The main issues of energy and environment associated with shipyards manufacturing processes are
presented. The direct and indirect demands of energy in the shipbuilding industry are clarified. The
Life Cycle Analysis (LCA) in ship production is addressed with particular emphasis on the methods
commonly used to reduce energy consumption and relevant harmful environmental impacts. The
holistic approach of LCA is briefly outlined. The importance of rationalization of materials used in
shipbuilding and ship scrapping is stressed. The modem approach of Ship Design for Environment is
highlighted. The paper is concluded by stressing the importance of introducing the relevant energy and
environment courses into the educational programs of Naval Architecture and Marine Engineering
departments.

KEYWORDS

Shipbuilding, Energy, Environmental impacts, Pollution, Risk analysis, Life cycle analysis, Design for
environment

1 INTRODUCTION

Awareness about environmental problems has increased significantly in recent years. There is now
widespread appreciation of the serious health risks, degradation of natural resources, climate change
and need for means of environmental protection. Energy consumption has adverse economic and
environmental implications. Therefore, consumption of energy should be rationalized in order to
improve the economics of the industry and protect the environment, particularly for energy intensive
industries.

The shipbuilding and ship repair industries consume various types of energy for ship production and
ship repair and therefore produce environmental problems. Identification of the size, scope and
consequences of the harmful environmental impacts should receive some consideration. Solving
pollution problems should be directed to pollution prevention, reduction and control. This philosophy
should be reflected in the teaching curricula of the Faculties of Engineering. Future engineers should