InterviewSolution
| 1. |
Can A Manufacturer State Their Products Are “sil X Certified” Rather Than “suitable For Use In A Sil X System”? |
|
Answer» Individual products are only suitable for USE in a SIL environment. A SIL level applies to a Safety Instrumented Function / Safety Instrumented System. Product certificates are issued either by the manufacturer (self-CERTIFICATION), or other independent AGENCY to show that the APPROPRIATE process is followed, calculations have been performed, and analysis has been completed on the individual products to indicate that they are compatible for use within a system of a given SIL level. Full IEC 61508 certification can apply to a manufacturer’s processes. Full certification implies that a manufacturer’s product development process meets the standards set forth in the appropriate parts of sections 2 – 3 of IEC 61508 (including hardware / system and software). Receiving full certification from an accredited notifying body gives the end user confidence that the manufacturer’s engineering process has been reviewed and its product’s electrical content, firmware and logic have been assessed and conform to the guidelines set forth in the standard. There are very few nationally accredited bodies that can issue nationally accredited certifications. Other consulting firms issue certificates that indicate that the product and / or process has been reviewed by an independent THIRD party. Individual products are only suitable for use in a SIL environment. A SIL level applies to a Safety Instrumented Function / Safety Instrumented System. Product certificates are issued either by the manufacturer (self-certification), or other independent agency to show that the appropriate process is followed, calculations have been performed, and analysis has been completed on the individual products to indicate that they are compatible for use within a system of a given SIL level. Full IEC 61508 certification can apply to a manufacturer’s processes. Full certification implies that a manufacturer’s product development process meets the standards set forth in the appropriate parts of sections 2 – 3 of IEC 61508 (including hardware / system and software). Receiving full certification from an accredited notifying body gives the end user confidence that the manufacturer’s engineering process has been reviewed and its product’s electrical content, firmware and logic have been assessed and conform to the guidelines set forth in the standard. There are very few nationally accredited bodies that can issue nationally accredited certifications. Other consulting firms issue certificates that indicate that the product and / or process has been reviewed by an independent third party. |
|