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I.S. EN 61511-3:2017

Current
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
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2017

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

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
SN EN 61511-3 : 2017 Identical
EN 61511-3:2017 Identical
NBN EN 61511-3 : 2005 Identical
NF EN 61511-3 : 2017 Identical
UNE-EN 61511-3:2006 Identical

IEC 61025:2006 Fault tree analysis (FTA)
IEC 62551:2012 Analysis techniques for dependability - Petri net techniques
IEC 61511-1:2016+AMD1:2017 CSV Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming requirements
IEC 61508-5:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels (see Functional Safety and IEC 61508)
IEC 61165:2006 Application of Markov techniques
ISO/TR 12489:2013 Petroleum, petrochemical and natural gas industries Reliability modelling and calculation of safety systems
IEC 61508-6:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3 (see Functional Safety and IEC 61508)
IEC TS 62556:2014 Ultrasonics - Field characterization - Specification and measurement of field parameters for high intensity therapeutic ultrasound (HITU) transducers and systems

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