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1、ABB -Page1E x t e n d e d A u t o m a t i o n S y s t e m 8 0 0 x AFunctional safety Engineering- Functional Safety ManagementABB -Page2Functionalsafety Functional Safety Management - FSM Management of Functional Safety Quality Systems Planning, people and paperwork BenefitsABB -Page3Functionalsafet
2、yWhat is Functional Safety Management IEC 61508 part 4- 3.1.9 define functional safety part of the overall safety relating to the EUC and the EUC control system which depends on the correct functioning of the E/E/PE safety-related systems, other technology safety-related systems and external risk re
3、duction facilities More practical terms Functional Safety Management governs equipment and process safety activities involving safety systems. The purpose is to reduce the possibility of a SYSTEMATIC FAULT.ABB -Page4Functionalsafety IEC 61511 Defines 61508 application in Process Sector Defines the A
4、pplication of Safety Instrumented Systems for the Process IndustryIEC 61511 - Standard Life CycleABB -Page5FunctionalsafetyFSM - Objectives Specify management and technical activities during the Safety Lifecycle to achieve and maintain Functional safety Specify responsibility of persons and organiza
5、tions Extend an existing and monitored quality system Plan Execute Measure ImproveABB -Page6FunctionalsafetyIEC 61508 / 11 version of FSM FSM focuses of procedures, the standard provide a good reference 61508 cover everything including safety system hardware and software development Part 1- Clause 6
6、, lays out details for FSM Broad coverage can make application challenging 61511 focuses on the process owners and safety system users Part 1, Clause 5 lays out details of FSM Narrower coverage mange application more manageableABB -Page7FunctionalsafetyFSM Key Issues Functional Safety Management Saf
7、ety Planning- create a FSM plan Roles and responsibilities Personnel competency Documentation, documentation control Functional safety Verification and assessment Documented processesABB -Page8FunctionalsafetyA FSM plan describes the Safety lifecycleHazards Analysis/Risk Assessment: Define Design Ta
8、rgetExecute HW and SW designAnalyze Design: Reliability Analysis of Safety Integrity & AvailabilityOperate and MaintainDocumentDocumentDocumentDocumentOK AnalysisDesignVerifyModifyABB -Page9FunctionalsafetyComponents of a FSM plan Steps and sequences of work activities Roles and responsibilities Per
9、sonnel competency Documentation structure Verification tasks for each step Safety Requirement Specification development plan Design guidelines and methods Verification and Validation plans Operation and maintenance guideline Management of Change (MOC) procedures Functional Safety assessment planABB
10、-Page10FunctionalsafetyRoles and responsibilities Must be clearly delineated and communicated Each phase of Safety Life Cycle (SLC) and its associated activities One of the specifically noted primary objectives of functional safety management is Roles & ResponsibilitiesABB -Page11FunctionalsafetyPer
11、sonnel and Competency Ensure that staff “involved in any of the overall or software SLC activities” are competent Addressed specifically in Annex A in IEC61508 Training, experience and qualifications should all be assessed and documented System engineering knowledge Safety engineering knowledge Lega
12、l and regulatory knowledge More critical for novel systems or high SIL requirementABB -Page12FunctionalsafetyCertified Functional safety programs ABB has 3 certifications processed ongoing Organization certifications, Gap analysis done by Stuart Nunns Organization certified acc IEC 61511 All organiz
13、ations doing HI project, MUST have a person attended a T309 course (HI training) Certifications of persons TUV asi Functional safety engineer CFSE /TUV sud Functional safety expertABB -Page13FunctionalsafetyDocumentation and objectives What need to be documented? Any information to effectively perfo
14、rm: Each phase of the safety lifecycle Management of functional safety Verification and Validation Functional Safety assessmentABB -Page14FunctionalsafetyFunctional Safety Assessment Does the safety system meet spec and actually achieve functional safety (freedom from unacceptable risk) Independent
15、team: One competent senior person not involved in the design as a minimum) Should be performed after the stages below and MUST be done at least after stage 3. Stage 1 After hazard and risk analysis and SRS Stage 2 After SIS design Stage 3 After commissioning and validation (before hazard is present) Stage 4 After experience in operation and maintenance Stage 5 . After modificationABB -Page15Functionalsafety
