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Product Liability and Safety
In design In manufacturing In marketing
In Design
Plan for safety as a requirement Fire, explosion,electrocution,
contamination,...
Design reviews for safety Demonstrate an attitude of concern
Design Reviews for Safety
It’s not good enough just to make it work
Follow established standards ANSI, NEC, NESC, UL, IEEE,
etc.
Demonstrate an Attitude of Concern
Safety analysis Preliminary Hazard Analysis, Failure Modes and
Effects Analysis, Fault Tree Analysis, etc.
Identify high energy systems Danger! HIGH VOLTAGE
Identify critical systems Failures in what subsystems/components will
cause catastrophic failure.
Safety Analysis
Each system Each subsystem Each board Each component Single-point Multipoint
Identify High Energy Systems
Guard Isolate Monitor heat Alarm systems Warn when you can’t avoid
Identify Critical Systems
Controls Power to controls Power to life support Electrical grounding Make redundant Make robust Make fail-safe
In Manufacturing
Quality assurance Quality control Incoming parts Procedures followed Systems going out
Functional testing Safety testing
In Marketing
Warnings as a last resort Surgeon General’s warning
Incorporate human factors engineering Ergonomics
Attorney Intentional - knowingly and deliberately
– Ford Pinto
Negligent - didn’t know, but insufficient safety considerations
– no life support backup systems
Reckless - not intentional, but knowingly– Challenger
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