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CZECH TECHNICAL UNIVERSITY IN PRAGUE
STUDY PLANS
2023/2024

Safety and Reliability of Technical Systems

The course is not on the list Without time-table
Code Completion Credits Range
W37O002 ZK 60
Garant předmětu:
Lecturer:
Tutor:
Supervisor:
Department of Instrumentation and Control Engineering
Synopsis:

Definition of safety, dependability (availability, reliability, maintainability and maintenance support) and durability. Safety of technical objects/products - legislature, risk analysis, risk management. Dependability of technical objects and systems during his life cycle, management, control and assurance. Probability and statistical models for performance measures of reliability, maintainability, availability, safety, durability. Qualitative and quantitative methods of risk and dependability analysis (HAZOP, FMEA, FTA, ETA, RBD, MA, PC etc.), reliability prediction of systems. Tools of systems safety and dependability improvement. Evaluation and control of operating dependability. Dependability information systems.

Requirements:

1.Term quality. Quality of products, processes and systems. Quality management, application tools, package of standards ISO 9000:2000. Safety and dependability as a part of quality care.

2.Safety and risk, risk models, risk management. Legal responsibility for product and its safety and dependability, responsibility sharing of producer and customer. Legal directives, regulations and international standards ISO, IEC, EN.

3.Dependability: availability, reliability, maintainability (preventive/corrective maintenance), maintenance support. Operation availability, durability, storability. Nonrepaired and repaired objects.

4.Approach to quantitative indicators of reliability (safety, durability) of technical objects, failure criterion, performance measures, conditions of use, two-state failure model. Probability and statistical model for the quantification of safety, reliability (nonrepaired items) and durability.

5.The application of the vote standard distribution laws, typical shape of the failure rate with three periods. Exponential distribution law (EZR), conditions of its applicability. Calculation of reliability in the first and third period.

6.Renewal process - simple, general. Performance measures of reliability and maintainability of repaired items. Availability, performance measures of availability, stable renewal process, asymptotic value A. Availability function for EZR for reliability and for maintainability (reparability). Operative availability, performance measures of operative availability.

7.Life cycle costs (LCC). Costs of ownership - undependability (unavailability) part of costs. Influence of availability on costs.

8.Systems dependability. General procedure of the dependability analysis, qualitative and quantitative methods of dependability/risk analysis. Principle of methods: Reliability block diagram (RBD), Fault mode and effects analysis (FMEA), Fault/Event tree analysis (FTA/ETA), Markov analysis (MA), Path county (PC).

9.Reliability (safety) calculation of systems with serial, parallel and simple mixed failure model (RBD).

10.Possibilities and tools of reliability and safety improvement processes of technical systems. Redundancy, its classification. Static and substitution (in/partly/out of operation) redundancy, majority redundancy m of k (2 of 3)

11.Dependability management, application tools: dependability programme, dependability plane, programmes for reliability growths, reliability stress screening, official design review etc.

12.Operating dependability evaluation - goals, motivation, contents. Maintainability, maintenance support. Operating dependability control. Dependability tests, using forms and methods.

13.Collection of dependability data from the field. Information systems for evaluation and control of the operating dependability.

Syllabus of lectures:

1.Term quality. Quality of products, processes and systems. Quality management, application tools, package of standards ISO 9000:2000. Safety and dependability as a part of quality care.

2.Safety and risk, risk models, risk management. Legal responsibility for product and its safety and dependability, responsibility sharing of producer and customer. Legal directives, regulations and international standards ISO, IEC, EN.

3.Dependability: availability, reliability, maintainability (preventive/corrective maintenance), maintenance support. Operation availability, durability, storability. Nonrepaired and repaired objects.

4.Approach to quantitative indicators of reliability (safety, durability) of technical objects, failure criterion, performance measures, conditions of use, two-state failure model. Probability and statistical model for the quantification of safety, reliability (nonrepaired items) and durability.

5.The application of the vote standard distribution laws, typical shape of the failure rate with three periods. Exponential distribution law (EZR), conditions of its applicability. Calculation of reliability in the first and third period.

6.Renewal process - simple, general. Performance measures of reliability and maintainability of repaired items. Availability, performance measures of availability, stable renewal process, asymptotic value A. Availability function for EZR for reliability and for maintainability (reparability). Operative availability, performance measures of operative availability.

7.Life cycle costs (LCC). Costs of ownership - undependability (unavailability) part of costs. Influence of availability on costs.

8.Systems dependability. General procedure of the dependability analysis, qualitative and quantitative methods of dependability/risk analysis. Principle of methods: Reliability block diagram (RBD), Fault mode and effects analysis (FMEA), Fault/Event tree analysis (FTA/ETA), Markov analysis (MA), Path county (PC).

9.Reliability (safety) calculation of systems with serial, parallel and simple mixed failure model (RBD).

10.Possibilities and tools of reliability and safety improvement processes of technical systems. Redundancy, its classification. Static and substitution (in/partly/out of operation) redundancy, majority redundancy m of k (2 of 3)

11.Dependability management, application tools: dependability programme, dependability plane, programmes for reliability growths, reliability stress screening, official design review etc.

12.Operating dependability evaluation - goals, motivation, contents. Maintainability, maintenance support. Operating dependability control. Dependability tests, using forms and methods.

13.Collection of dependability data from the field. Information systems for evaluation and control of the operating dependability.

Syllabus of tutorials:

Presentation of actual technical and management approach to problems solution of safety and dependability of technical objects and systems as consistent with actual legislative requirements and international standards ISO, IEC, EN. Built up theoretical fundamentals to application technical approach to problems solutions, inclusive of especially qualification, quantification, risk and dependability analysis methods, reliability and safety improvement tools, operating dependability evaluation and control

Study Objective:
Study materials:

Mykiska, A.: Bezpečnost a spolehlivost technických systémů. Skripta. Vydavatelství ČVUT, Praha 2004 (206 str.)

Schneider, J.: Introduction to Safety and Reliability of Structures. IABSE, Zurich 1997. (138 pp.)

Package of Standards IEC/EN 60300 Dependability management

Note:
Further information:
No time-table has been prepared for this course
The course is a part of the following study plans:
Data valid to 2024-06-22
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