I.S. EN ISO 13849-1:2015

National Foreword
European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms definitions symbols and abbreviated terms
4 Design considerations
5 Safety functions
6 Categories and their relation to MTTFD of each channel
   DC[avg] and CCF
7 Fault consideration fault exclusion
8 Validation
9 Maintenance
10 Technical documentation
11 Information for use
Annex A (informative) - Determination of required
        performance level (PL[r])
Annex B (informative) - Block method and safety-related
        block diagram
Annex C (informative) - Calculating or evaluating MTTF[D]
        values for single components
Annex D (informative) - Simplified method for estimating
        MTTF[D] for each channel
Annex E (informative) - Estimates for diagnostic coverage
        (DC) for functions and modules
Annex F (informative) - Estimates for common cause
        failure (CCF)
Annex G (informative) - Systematic failure
Annex H (informative) - Example of combination of several
        safety-related parts of the control system
Annex I (informative) - Examples
Annex J (informative) - Software
Annex K (informative) - Numerical representation of Figure 5
Bibliography
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2006/42/EC

Describes safety requirements and guidance on the principles for the design and integration of safety-related parts of control systems (SRP/CS), including the design of software.