IEC 61508 Functional Safety Assessment Rosemount Inc. - Exida

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Requirements from IEC 61508-3, Table A.3 that have been met by Rosemount, Inc. includesuitable programming language, strongly typed programming language, language subset, and toolsand translators: increased confidence from use.Requirements from IEC 61508-3, Table A.4 that have been met by Rosemount, Inc. include semiformalmethods, computer aided design tools, defensive programming, modular approach, designand coding standards, structured programming, forward traceability between the software safetyrequirements specification and software design,This is also documented in [D80a]. This meets the requirements of SIL 3.5.1.5 ValidationValidation Testing is done via a set of documented tests. The validation tests are traceable to theSafety Requirements Specification [D30] in the validation test plan [D35]. The traceability matricesshow that all safety requirements have been validated by one or more tests. In addition to standardTest Specification Documents, third party testing is included as part of the validation testing. Allnon-conformities are documented in a change request and procedures are in place for correctiveactions to be taken when tests fail as documented in [D17].Requirements from IEC 61508-2, Table B.5 that have been met by Rosemount, Inc. includefunctional testing, functional testing under environmental conditions, interference surge immunitytesting, fault insertion testing, project management, documentation, static analysis, dynamicanalysis, and failure analysis, expanded functional testing and black-box testing.Requirements from IEC 61508-3, Table A.7 that have been met by Rosemount, Inc. includeprocess simulation, functional and black box testing, and forward and backward traceabilitybetween the software safety requirements specification and the software safety validation plan.[D80a] documents more details on how each of these requirements has been met. This meets SIL3.5.1.6 VerificationVerification activities are built into the standard development process as defined in [D17].Verification activities include the following: Fault Injection Testing, static source code analysis,module testing, integration testing, FMEDA, peer reviews and both hardware and software unittesting. In addition, safety verification checklists are filled out for each phase of the safety lifecycle.This meets the requirements of IEC 61508 SIL 3.Requirements from IEC 61508-2, Table B.3 that have been met by Rosemount, Inc. includefunctional testing, project management, documentation, and black-box testing.Requirements from IEC 61508-3, Table A.5 that have been met by Rosemount, Inc. includedynamic analysis and testing, data recording and analysis, functional and black box testing,performance testing, interface testing, and test management and automation tools.Requirements from IEC 61508-3, Table A.6 that have been met by Rosemount, Inc. includefunctional and black box testing, performance testing, and forward traceability between the systemand software design requirements for hardware/software integration and the hardware/softwareintegration test specifications© exida Certification rosemount 11-07-062 r007 v1 r1 iec 61508 assessment.docx, 3/8/2012Michael Medoff Page 16 of 21
Requirements from IEC 61508-3, Table A.9 that have been met include static analysis, dynamicanalysis and testing, forward traceability between the software design specification and thesoftware verification plan.[D80a] documents more details on how each of these requirements has been met. This meets therequirements of SIL 3.5.1.7 ModificationsModifications are done per the Emerson Process Management’s change management process asdocumented in [D24]. Impact analyses are performed for all changes once the product is releasedfor integration testing. The results of the impact analysis are used in determining whether toapprove the change. The standard development process as defined in [D17] is then followed tomake the change. The handling of hazardous field incidents and customer notifications is governedby [D21]. This procedure includes identification of the problem, analysis of the problem,identification of the solution, and communication of the solution to the field. This meets therequirements of IEC 61508 SIL 3.Requirements from IEC 61508-3, Table A.8 that have been met by the Rosemount, Inc.modification process include impact analysis, reverify changed software modules, reverify affectedsoftware modules, revalidate complete system or regression validation, software configurationmanagement, data recording and analysis, and forward and backward traceability between thesoftware safety requirements specification and the software modification plan (includingreverification and revalidation)5.1.8 User documentationRosemount, Inc. created a safety manual for the 3051 C/T/L Pressure Transmitter [D160a] whichaddresses all relevant operation and maintenance requirements from IEC 61508. This safetymanual was assessed by exida certification. The final version is considered to be in compliancewith the requirements of IEC 61508.Requirements from IEC 61508-2, Table B.4 that have been met by Rosemount, Inc. includeoperation and maintenance instructions, maintenance friendliness, project management,documentation, and limited operation possibilities.[D80a] documents more details on how each of these requirements has been met. This meets therequirements for SIL 3.© exida Certification rosemount 11-07-062 r007 v1 r1 iec 61508 assessment.docx, 3/8/2012Michael Medoff Page 17 of 21
Page 1 and 2: IEC 61508 Functional Safety Assessm
Page 3 and 4: Table of ContentsManagement summary
Page 5 and 6: 2 Project management2.1 exidaexida
Page 7 and 8: [D189] exida Modification Phase Ver
Page 9 and 10: [D97] Software DVT Test Plan B.2;11
Page 11 and 12: 3 Product DescriptionThe Rosemount
Page 13 and 14: 4 IEC 61508 Functional Safety Asses
Page 15: 5.1.2 Safety Requirements Specifica
Page 19 and 20: These results must be considered in
Page 21: 7 Status of the document7.1 Liabili

IEC 61508 Functional Safety Assessment Rosemount Inc. - Exida

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