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Chapter 31 Formal Safeety Assessment Applied to Shipping Indusw 557
risk to the environment
risk to property
Definition of Goals and
System I Operations
Hazard identification
I
Re-examination and
Modification 1
A No
4
1. NO e
Yes I
Acceptance
Yes
Risk Management
Figure 31.1 Functional Components in Formal Safety Assessment
31.3 Functional Components of Formal Safety Assessment
31.3.1 System Definition
A detailed system description is essential to the risk assessment. Such description usually
consists of a hierarchical structure, including all hardware, people, procedures, and
environment, being described in a ‘top-down’ manner. The hardware that comprises a generic
ship is the most basic layer in the system definition. The interface between hardware and
human operators, i.e. the so-called man-machine interface, forms the second layer. The
external environment could be considered as the third layer. The overall safety is influenced
by the hardware, individuals & organization, and external environment, which may vary
during the ship life cycle. Therefore, in the following Sections we shall discuss the ship’s
hardware, the stakeholders (interested parties), and the ship’s life cycle.
The Ship Hardware
The ship hardware can be roughly decomposed into two categories: structure and machinery.
