Frequently Asked Questions - Exida

More documents

Recommendations

Info

Product requirements and design documents are reviewed next. The documents suppliedshould match those required in the functional safety management plan. Evidence that therequired verification activities have been done shall be included. Competency records must bein place and show that those assigned to the project were competent to perform their specifictasks. When the paper review is complete, the assessment continues with detailed on-sitemeetings.Review SMS ProceduresReview Product DesignDocumentationOn-site Meetings:Procedures Used?Actual DocumentsCreated?Validation TestingCreate Safety CaseProblems?Audit CertificationDocumentationCertification report andCertificateFigure 4: exida Open Certification assessment processWhen all relevant documents are reviewed, interviews with the responsible personnel must takeplace. This is done by visiting the development and manufacturing control site(s). One of thekey interview questions is “What process was followed in the design of this project?” and “Havethe safety requirements been implemented the product”. It is surprising how often the answervaries from the process described in the functional safety management plan or from thedocumented safety concept. Any discrepancies must be justified and documented bymodifications to the “project specific functional safety management plan” and safety concept.The site visit must also include witnessed validation testing often including specific fault injectiontests.If all documentation for both the process and the product are complete and seem fit, a safetycase document is created. This step provides a systematic method to ensure that norequirements of the standard(s) are missed. Often missing requirements are identified and theassessment must return to a previous step to correct the problem. When the safety case isjudged to be accurate and complete, the certification report describing all assessment activitiesand their results is written. The documentation is given to an independent auditor to verify.© exida, 2007 IEC 61508 Certification Program – Frequently Asked QuestionsPage 10 of 13
When the audit is complete and the independent auditor supports the certification, the certificate(Figure 6) is issued.Figure 6: exida IEC 61508 Certificate3.8 The exida Assessment and Certification ReportThe exida Assessment and Certification Report shall give the user of the product detailedinformation to support his confidence in the product and its certification and shall support hissafety-related application of the product. The exida Assessment and Certification Report isstructured as follows:Management summary1 Purpose and Scope2 Description of the product / system3 Project management3.1 Assessment of the development process3.2 Assessment of the technical safety properties of the product3.3 Roles of the parties involved4 Results of the Functional Safety Assessment4.1 Technical safety aspects of the product / system4.1.1 Safety Functions of the product / system
Page 1 and 2: Frequently Asked QuestionsThe exida
Page 3 and 4: • Hardware Failure Modes, Effects
Page 5 and 6: 2.11 Why does an exida certificate
Page 7 and 8: Safety integrity levels (SILs) are
Page 9: assessment and to communicate their
Page 13: FSMIECNISTSIFSILSISSMSSRSFunctional

Frequently Asked Questions - Exida

Create successful ePaper yourself

Delete template?

Save as template?