I.S. EN 61511-3:2017
Current
The latest, up-to-date edition.
FUNCTIONAL SAFETY - SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRY SECTOR - PART 3: GUIDANCE FOR THE DETERMINATION OF THE REQUIRED SAFETY INTEGRITY LEVELS
Hardcopy , PDF
English
01-01-2017
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Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
National Foreword
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
Annex A (informative) - Risk and safety
integrity - general guidance
Annex B (informative) - Semi-quantitative
method - event tree analysis
Annex C (informative) - The safety layer
matrix method
Annex D (informative) - A semi-qualitative method:
calibrated risk graph
Annex E (informative) - A qualitative method:
risk graph
Annex F (informative) - Layer of protection
analysis (LOPA)
Annex G (informative) - Layer of protection analysis
using a risk matrix
Annex H (informative) - A qualitative approach for
risk estimation & safety integrity level
(SIL) assignment
Annex I (informative) - Designing & calibrating a
risk graph
Annex J (informative) - Multiple safety systems
Annex K (informative) - As low as reasonably
practicable (ALARP) and tolerable risk
concepts
Bibliography
Annex ZA (normative) - Normative references to
international publications with their
corresponding European publications
Gives information on: - the underlying concepts of risk, the relationship of risk to safety integrity, - the determination of tolerable risk, - a number of different methods that enable the safety integrity levels for the safety instrumented functions to be determined, - The impact of multiple safety systems on calculations determining the ability to achieve the desired risk reduction.
| DevelopmentNote |
For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
|
| DocumentType |
Standard
|
| Pages |
238
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN 61511-3 : 2005 | Identical |
| BS EN 61511-3:2017 | Identical |
| EN 61511-3:2017 | Identical |
| NBN EN 61511-3 : 2005 | Identical |
| NF EN 61511-3 : 2017 | Identical |
| UNE-EN 61511-3:2017 | Equivalent |
| UNE-EN 61511-3:2006 | Identical |
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