1、INTERNATIONALSTANDARDIEC61511-2First edition2003-07Functional safety Safety instrumented systemsfor the process industry sector Part 2:Guidelines for the application of IEC 61511-1Reference numberIEC 61511-2:2003(E)COPYRIGHT 2003;International Electrotechnical Commission Document provided by IHS Lic
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12、ded by IHS Licensee=Agip KOC/5950653001,User=,09/30/200305:06:03 MDT Questions or comments about this message:please call the DocumentPolicy Group at 1-800-451-1584.-,-,-2 61511-2 IEC:2003(E)CONTENTSFOREWORD.4INTRODUCTION.61Scope.82Normative references.83Terms,definitions and abbreviations.84Conform
13、ance to this International Standard.85Management of functional safety.95.1Objective.95.2Requirements.96Safety lifecycle requirements.156.1Objective.156.2Requirements.157Verification.157.1Objective.158Process hazard and risk assessment.168.1Objectives.168.2Requirements.169Allocation of safety functio
14、ns to protection layers.199.1Objective.199.2Requirements of the allocation process.199.3Additional requirements for safety integrity level 4.219.4Requirement on the basic process control system as a layer of protection.219.5Requirements for preventing common cause,common mode and dependentfailures.2
15、210SIS safety requirements specification.2310.1 Objective.2310.2 General requirements.2310.3 SIS safety requirements.2311SIS design and engineering.2411.1 Objective.2411.2 General requirements.2411.3 Requirements for system behaviour on detection of a fault.2811.4 Requirements for hardware fault tol
16、erance.2811.5 Requirements for selection of components and subsystems.3011.6 Field devices.3211.7 Interfaces.3211.8 Maintenance or testing design requirements.3411.9 SIF probability of failure.3512Requirements for application software,including selection criteria for utilitysoftware.3712.1 Application software safety lifecycle requirements.3712.2 Application software safety requirements specification.4012.3 Application software safety validation planning.4212.4 Application software design and de
