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What is System Safety? System Safety is an effort to make things as safe as practical by systematically using engineering and management tools to identify,

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Presentation on theme: "What is System Safety? System Safety is an effort to make things as safe as practical by systematically using engineering and management tools to identify,"— Presentation transcript:

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2 What is System Safety? System Safety is an effort to make things as safe as practical by systematically using engineering and management tools to identify, analyze and control hazards “Effort” in this case is synonymous with an: – Approach – Discipline – Concept – Doctrine – Philosophy

3 What “things” are we talking about making safe? Systems Programs Projects Products Operations Facilities

4 How safe is “…as safe as practical?” Regulatory compliant Recognized industry “best practice” Proactively Managed Risk

5 What “system” are we talking about? Any composite of: – People (Man) – Hardware (Machine) – Tasks & Procedures (Mission) – Environment (Medium)

6 5 M model Represents the casual factors in accidents 5 main areas become a meaningful checklist Intertwined circles illustrate interaction Interrelated areas focus on mission Mission accomplishment is implicit to system safety effort

7 Man-Machine-Environment T.P. Wright introduced this concept to aviation safety in the late 1940’s Triad adopted by USC instructors and became the 3-M model Management, the 4 th M, added in 1965 Mission added in 1976 by E.A. Jerome of the Flight Safety Foundation

8 Why System Safety? Regulatory compliance is a minimalist approach Exemplar “best practices” may not recognize hazards unique to your system Codes, standards and regulations tend to lag leading-edge activities Primary reason is to achieve better results!

9 “Systematic methods with a measured approach to identifying, analyzing, and controlling hazards aid in reducing errors and improve task accomplishment through increased effectiveness and efficiency”

10 You are about to be evaluated on a task. It will be timed so work quickly but safely -- Accuracy is paramount! FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF MANY YEARS.

11 How many F’s did you count? None of the Above?

12 Starting at the end of the sentence count backwards and mentally X each letter F. Use your fingers to tally each X. Accuracy is paramount – time is of no concern. FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF MANY YEARS.

13 A “systems” approach will reduce errors even for simple tasks Almost all operations benefit from a combination of controls A “safety precedent” dictates an order of approaches This precedent sequence is one of the “common strategies” in various systems approaches used today Not all safety systems are created equal

14 Safety, who is responsible? Management has overall responsibility for ensuring programs are established, staffed, trained and resourced The safety community has responsibility for support, education, tools & techniques, and monitoring progress The engineers are responsible to provide hardware expertise, perform analyses and to make design changes

15 Systems Safety Working Group (SSWG) Project Managers Design Engineers Safety Engineers End User (customer)

16 Final Comments System Safety efforts begin with the system conceptualization Continue through initial design and construction Sustained during operational life cycle Follow through with system disposal A “cradle to grave” program

17 Second Thoughts?


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