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Practical Safety and Reliability Assessment - K.C. Hignett

Practical Safety and Reliability Assessment

Hardcover Published: 29th August 1996
ISBN: 9780419213307
Number Of Pages: 196

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An integral part of any engineering or manufacturing process is a continuous process of assessing its safety and reliability. This work provides a guide to the practical application of safety and reliability principles wherever risk is a consideration. The theory and mathematics are kept to a minimum, whilst a practical working model of the technology is presented for everyone involved in general engineering disciplines. It reduces the high cost of using professional consultant practitioners, introduces an advanced methodology of common mode failure analysis and modelling, with potential savings on system capital costs, and provides an illustration of working principles by graded tutorial projects.

Terminologies in process safety engineering
Plant systems
Safety systems
Derivation of basic formulae
Introduction
Failure prediction
Reliability function
Hazard function
Failure probability density function
The exponential cumulative function
Summary and final comments
Unavailability, safety and changes of state
Failure modes and plant unavailability
Failure rate components
Changes of state
Proof testing
Introduction
Proof testing philosophies
Proof testing procedures
System proof testing
Proof testing of the single safety channel
Data and mean fractional dead times
Data for failure probability evaluations
Systems mean fractional dead times
Logical network principles
Introduction
Binary variables
Logic gates - symbolic notations
Truth tables
Combinations through logic gates
Dimensional criteria
Fault trees
Introduction
Basis of the mathematical model
Evaluation of the mathematical model
Quantities in risk assessment modelling
Logic gates in systems safety modelling
Boolean combinations at logic gates
Probabilistic - definition
Probability expression nomenclatures
Definitions of probability - reversible state
Higher-order probability terms in gate outputs
Combining higher order probabilities
Rate combinations at the logical OR gate
Probability combinations at the logical OR gate
Rate combinations at the logical AND gate
Rate and probability inputs at the logical AND gate
Rate combinations at majority voting gates
Probability combinations at majority voting gates
High and low demand rates in risk assessment
Mathematical modelling of human failures
Introduction
The human element
Interpretation of data
Aspects of human failure
Human and human-equipment failure combinations at logic gates
Combinations at the logical OR gate
Combinations at the logical AND gate
Combinations in majority voting logic
Modelling common-mode failures
Introduction
Definition of terms
Symbols
The nature of common-mode failure in assessment
The logical assessment methodology
Elementary system study
Appendices. A. Qualitative assessment of safety system reliability
Quantitative assessment of safety system reliability
Reliability case study of an automatic protective system
Reliability case study of an automatic fire valve based on failure mode and effect analysis
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9780419213307
ISBN-10: 0419213309
Audience: Tertiary; University or College
Format: Hardcover
Language: English
Number Of Pages: 196
Published: 29th August 1996
Country of Publication: GB
Dimensions (cm): 23.52 x 16.2  x 1.42
Weight (kg): 0.39
Edition Number: 1