EAS 203 Chapter Notes - Chapter 2: Aptiv, Vehicle-To-Everything, General Motors
7 Jun 2018
School
Department
Course
Professor
UNIT 2 READINGS
Jan 30 Readings
Fleddermann, Chapter 5: Risk, Safety, and Accidents, pp. 74-80
- factors in evaluating risk and safety
o voluntary/involuntary risk
o short term/long term consequences
o expected probability- small chance of big injury seems less risky than big chance
of small injury
o reversible effects- similar to short/long term consequences
o threshold levels for risk
o delayed/immediate risk
- four criteria to ensure a safe design
o must comply with applicable laws
o must meet standard of “accepted engineering practice”
o alternate designs that are potentially safer must be explored
o must attempt to foresee potential misuses of the product by the consumer and
must design to avoid these problems.
o After finished, prototypes and final designs must be rigorously tested
- different categories of accidents.
o Procedural- failure to follow the right procedure when using product
o Engineered- flaws in design
o Systemic- small mistakes adding up
Charles Perrow, Normal Accidents: Living with High-Risk Technologies,
- “Introduction,” pp. 3-14
o what is a high-risk system
§ nuclear power plants, chemical plants, etc
§ have catastrophic potential
§ “no matter how effective conventional safety devices are, there is a form
of accident that is inevitable
§ explosive/genetic dangers
o what is Perrow's definition of a normal accident
§ interactive complexity- components may interact to create an accident,
adding more things increases the interactions between stuff? Unexpected
interactions
§ Tight coupling- processes happen very fast and can’t be turned off, failed
parts cannot be isolated from other parts, there is no other way to keep the
production going safely- recovery from initial disturbance not possible,
and it will spread quickly
§ Aka system accident
§ Given the system characteristics (interactive complexity and tight
coupling), multiple and unexpected interactions of failures are inevitable
o how is TMI an example of a normal accident.
- Chapters 1 and 2, pp. 15-61
o concepts of high-risk systems and normal accidents and how they could be
applied to your own field in thinking about risk and safety
Feb 2 Readings
Document Summary
Fleddermann, chapter 5: risk, safety, and accidents, pp. Different categories of accidents: procedural- failure to follow the right procedure when using product, engineered- flaws in design, systemic- small mistakes adding up. Charles perrow, normal accidents: living with high-risk technologies, No matter how effective conventional safety devices are, there is a form of accident that is inevitable. Given the system characteristics (interactive complexity and tight coupling), multiple and unexpected interactions of failures are inevitable: how is tmi an example of a normal accident. 15-61: concepts of high-risk systems and normal accidents and how they could be applied to your own field in thinking about risk and safety. Fleddermann, chapter 1: nasa space shuttle case studies, pp. Should the ordering of a launch be an engineering or a managerial decision? pg 7. Richard feynman, what do you care what other people think? further adventures of a. Report of the presidential commission on the space shuttle challenger accident: chapter vi:
