1. Chapter 6 - Modern Concepts of Accident Prevention

2. Old View Points Safety won’t sell
Operator error & negligence are principal accident causes
Most accidents are caused by accident-prone persons
Engineers are educated enough to design safe products

3. Old View Points Failures are principal causes of accidents
Seal of approval or label from accredited testing laboratory means product is safe
Product designed & manufactured in accordance with industry standards will be a safe product
Making a product or operation safe increases costs

4. Old View Points Increasing safety slows operations
Safety cannot be legislated
It is impossible to determine the safety problems of a new product before it is built
Corrections can be made if & after an accident indicates where a danger exists

5. Old View Points
The time to check a new product for safety is when the first prototype or model is tested
A product’s safety can be ensured by making a detailed analysis & test after the prototype is developed
If a product is used in a way the manufacturer did not intend, the manufacturer cannot be held liable if an injury results

6. Old View Points
Warning of a hazard is adequate defense against a claim resulting from an injury due to the hazard the manufacturer warned against
It costs less to cover losses with insurance than to spend money making products safe since the probability of an accident is low
Designers make safety one of their primary considerations

7. System Safety Concept
Safety management & engineering is a continuing process that begins with the first steps in the development of a product
Numerous methods have been developed to support the process:
Fault tree analysis
MORT
HAZOP
Event Tree Analysis

8. Hazard Categories
Dangerous properties / characteristics of a product which may be inherent, the result of design error, production defect, etc.
Material failure - result of design error, production defects, environmental stress, or operator error

9. Hazard Categories Operator error (may be due to design error)
Environmental stresses (indirectly or directly causing injury or damage). Controlled or eliminated by good design