Safety certification for avionics hardware and software is an expensive, complicated process, but absolutely necessary to ensure safe skies for commercial aircraft passengers and military jets flying in the national airspace. Now unmanned aircraft flight critical electronics will also have to meet these same safety requirements as the U.S. Federal Aviation Administration (FAA) starts to open up the national airspace to unmanned aerial systems (UASs). While the rules are still being drawn up, embedded software and hardware designers are already looking at ways for UAS platform integrators to solve certification challenges and manage the process of compliance with safety certification standards such as DO-178B & C. This webcast of industry experts will discuss how to enable safety certification of UAS platforms through efficient and cost-effective solutions.
New digital technology now makes it feasible to integrate process control and SIF within a common automation infrastructure. While this can provide productivity and asset management benefits, if not done correctly, it can also compromise the safety and security of an industrial operation. Cybersecurity and sabotage vulnerability further accentuate the need for securing the safety instrumented system (SIS).
Certainly, a common platform approach using similar hardware and software dedicated for control and safety functions, respectively, can provide the potential for cost savings. However, it is widely acknowledged that utilizing separate, independent, and diverse hardware/software for safety and control is the optimal way to protect against potentially catastrophic common cause and systematic design and application errors.
Different vendors offer varied degrees of integration and solutions. The question is: how to provide an integrated control and safety solution with advanced functionality and productivity without compromising safety and security? And, where do users draw the line?
A third-party (e.g., T‹V) certification of the hardware/software systems to IEC 61508 specifications carries significant advantages, but should this be the only criterion? How does a third-party certificate extend to the plantís overall assignment of risk reduction credits for all independent protection layers (IPL)? Control system embedded safety logic solvers may actually increase the SIL requirements of the SIF if no credit is allowed for the distributed control system (DCS) as an IPL.
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