Guide to system safety analysis in the gas industry
This guide to system safety analysis is addressed to an individual having a basic technical background but little or no experience in this field. Several commonly used techniques of system safety analysis are described, and examples of each are presented. Techniques covered include Failure Modes and Effects Analysis (FMEA), Procedure Analysis, Fault Tree Analysis, and Reliability Analysis. Examples drawn from the gas industry pertain to both distribution and transmission systems. Examples of the quantitative evaluation of fault trees and reliability block diagrams are carried out in detail. The techniques range from loosely structured tabular formats to formalized procedures with logic diagrams. The loosely structured tabular formats are best suited for a systematic qualitative identification of potential hazards, causes, consequences, evaluations, and corrections. They provide greater flexibility in application and require less expertise by the analyst than the formalized logic diagram. The formalized logic diagram or fault tree can be converted into mathematical expressions when probabilities of the occurrence of input events are known. These formalized procedures can also be used qualitatively to trace causes of a particularly significant output event. There are no rigid rules for selecting the technique to be used in a given application, although it is assumed that the simpler, loosely structured tabular format may find greater applicability in the gas industry. In each case, the analyst must consider his objectives, the available input data and the effort and skill required.
- OSTI ID:
- 5422727
- Resource Relation:
- Related Information: A. G. A. Cat. No. X51174
- Country of Publication:
- United States
- Language:
- English
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