Trainings

Safety Related Systems

General:
The training consists of a two day course and can have up to 15 participants.
The following content is a suggestion.
Any alterations and additions can be included in the program.

1. Introduction

• Functional safety of electrical, electronic and programmable systems
• Approval and certification procedure
• Examples of some application areas of "safety related systems"

2. General Considerations

• Overview of relevant standards
     - Generic standards
     - Application dependant standards
     - Technology dependant standards
     - EU-directives, international standards
     - Comparison of the different standards

3. Safety Philosophy

• Risk definition, risk reduction
• Introduction of different risk classes
     - Requirement class
     - Safety class
     - Safety integrity level (SIL)
     - Safety categories
     - Comparison and relations
• Examples for different applications
     - Process industry
     - Furnaces, burner control
     - Production industry
     - Machinery

4. EU-Directives and Standards

• Contents of the standards, general method, requirements
     - Machinery directive, EMC directive, low voltage directive
     - EN 954, EN 60204, EN 81

5. International Standard IEC 61508

• General method, requirements
• Life cycle of safety related systems
• Definition of the requirements, SIL level
• Meaning of the SIL levels
• Consideration of failure modes
     - Random
     - Systematic
     - Handling
     - Operation
     - Environmental
• Examples
• Definition of measures against failures
     - Fault avoidance
     - Fault detection and reaction (control)
• Examples
• Comparison deterministic, probabilistic approach
• Design, Development and production phase
     - System (safety) requirement specification
     - Validation & verification plan
     - Contents and examples
• Selection of necessary measures with consideration of the influence by the application (process) and programmable system during the design, development and production process
• Examples
     - HW-design and verification
     - SW-design and verification
• Conditions for the phases
     - Setting into operation
     - Operation

6. Safety Related Bus Systems

• Application of the IEC 61508, VDE 0801, EN 954 and EN 50159 methods and measures to bus-systems
• Principles for the use of bus systems
• Deterministic approach
     - Transmission errors, hardware failure (random), systematic failure
• Probabilistic approach to achieve a certain amount of data integrity
     - Reliability of data transmission
     - Bit error probability
     - Error probability and error detection
• Different bus architectures
• Examples

Additional requirements by the customer can be agreed upon.

Date of Training

Can be determined individually, but a preparation time of four weeks has to be considered.

© by TÜV Rheinland Industrie Service GmbH/ last change: 08.03.2004