BIS IS/IEC 61511-3 : 2003

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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

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Published date: 12-01-2013

Publisher: Bureau of Indian Standards

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NATIONAL FOREWORD
INTRODUCTION
1 SCOPE
2 TERMS, DEFINITIONS AND ABBREVIATIONS
3 RISK AND SAFETY INTEGRITY - GENERAL
  GUIDANCE
ANNEX A (INFORMATIVE) - AS LOW AS REASONABLY
        PRACTICABLE (ALARP) AND TOLERABLE RISK CONCEPTS
ANNEX B (INFORMATIVE) - SEMI-QUANTITATIVE METHOD
ANNEX C (INFORMATIVE) - THE SAFETY LAYER MATRIX METHOD
ANNEX D (INFORMATIVE) - DETERMINATION OF THE REQUIRED
        SAFETY INTEGRITY LEVELS - A SEMI-QUALITATIVE
        METHOD: CALIBRATED RISK GRAPH
ANNEX E (INFORMATIVE) - DETERMINATION OF THE REQUIRED
        SAFETY INTEGRITY LEVELS - A QUALITATIVE METHOD:
        RISK GRAPH
ANNEX F (INFORMATIVE) - LAYER OF PROTECTION ANALYSIS (LOPA)

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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.

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Committee	LITD 9
Development Note	Issue Date: 01/10/2008. (02/2009)
Document Type	Standard
ISBN
Pages
Published
Publisher	Bureau of Indian Standards
Status	Current

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Equivalent Standard(s)	Relationship
IEC 61511-3:2016	Identical

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