SYSTEM SAFETY CONCEPT

System Safety Concept

Table of Contents

1.Explain key system safety concepts and their importance.5

What is Safety?6

What is System Safety?7

2.Explain requirements of a system safety program as it applies in an occupational environment.10

A Global Strategy for Aviation Safety10

Objective of the ICAO safety for 2008-201111

The road map for aviation safety worldwide11

Stages of the planning process12

Step 112

Step 212

Step 312

Step 413

Step 513

Step 614

Step 714

Monitoring15

Global safety initiatives15

3. Summarize the connection of MIL-STD 882 including its creation and evolution on the system safety process.17

MIL-standards:17

4.Describe the a) use, b) limitations, and an c) example of each of the following system safety analysis tools:21

Preliminary Hazard Analysis (PHA)21

Use21

Limitations22

Example22

Evaluation and management of risk23

Considerations23

Job Hazard Analysis (JHA), and Job Safety Analysis (JSA) as a group.24

Use24

Limitation26

System Hazard Analysis (SHA) and Subsystem System Hazard Analysis (SSHA).27

Use27

Operating and Support Hazard Analysis (O&SHA) aka Operational Hazard Analysis (OHA).27

Operating and Support Hazard Analysis (O&SHA)27

Operational hazard Analysis28

Examples29

Failure Mode and Effect Analysis (FMEA)30

Example31

Limitations32

Fault (or functional) Hazard Analysis (FHA).33

Fault Tree Analysis (FTA).33

Uses34

Example34

Limitations35

Management Oversight and Risk Tree (MORT).35

Use35

Limitations35

Hazard and Operability Studies (HAZOP and What-If Analyses).35

Use35

Example36

Limitations37

Human Error Analysis37

Software Hazard Analysis38

5. Define and concisely present where and how system safety engineering could be utilized in a potentially dangerous work environment.40

Office Ergonomics, absolutely essential41

System Safety Concepts

In recent years it appears to be in a world marked with increased interest in aspects of security and favorable conditions of work of man. These interests are also reflected in the efforts to internationalize standards for covering issues of work safety, ergonomics, health and environmental protection.

Explain key system safety concepts and their importance.

In the United States, there are always such-and-such potential hazards in people's work activities or work environment, which may cause property damage, be harmful to environment, affect human's health and even cause injury or accident. People call the possibility of one or some danger causing incidents and its possible consequence as risk (Johnson, 1980). The object of contemporary occupational health and safety management is the occupational safety and health risks.

These hazards may be chemical, physical, biological, related to human work efficiency and others, the factors of which include personal factor, equipment factor, environmental factor and organizational and management factor. Occupational health and safety is a series of measures and the corresponding activities adloyee's income, prevent employee from injury and create less stress from employee, thus employee may obtain more physical and psychological satisfaction.

Occupational health and safety management includes accident investigation and recording, work system designing, examination of workplace, training, complete incentives, supervision and employee aids plan. To some degree, the endeavor for safety has always been around. Humans have a natural instinct for self preservation, although some individuals seem to have a higher risk tolerance level than others. Prior to the advent of the system safety methodology, safety was achieved by accident—people did the best job they could, and if an accident occurred, they merely made a design change to prevent a future occurrence and tried again. However, as systems became larger and more techno-complex, knowing how to make a system safe was no longer a simple task.

In addition, as the consequences of an accident became more drastic ...