The automatic protection system should be designed to properly handle likely systematic errors, hardware failures and operational/environmental stress.
Thus, although functional safety standards focus on electrical, electronic, and programmable systems (E/E/PS), the end-to-end scope means that in practice, functional safety methods must extend to the non-E/E/PS parts of the system that the E/E/PS actuators, valves, motor controls or monitors.
In the United States, the American National Standards Institute (ANSI) is the AB for functional safety accreditation.
The follow-up surveillance ensures that the product, sub-system, or system is still being manufactured in accordance with what was originally certified for functional safety.
Follow-up surveillance may occur at various frequencies depending on the certification body, but will typically look at the product's field failure history, hardware design changes, software changes, as well as the manufacturer's ongoing compliance of functional safety management systems.
Thousands of products and processes meet the standards based on IEC 61508: from bathroom showers,[2] automotive safety products, sensors, actuators, diving equipment,[3] Process Controllers[4][5][6] and their integration to ships, aircraft and major plants.
The US FAA have similar functional safety certification processes, in the form of ARP4761, US RTCA DO-178C for software and DO-254 for complex electronic hardware,[7][8] which is applied throughout the aerospace industry.
The behavior of the software and SCFs at the system level is a vital part of any functional safety effort.
[9] In the US, NASA developed an infrastructure for safety critical systems adopted widely by industry, both in North America and elsewhere, with a standard,[10] supported by guidelines.
[12] The automotive industry has developed ISO 26262 "Road Vehicles Functional Safety Standard" based on IEC 61508.
It is a multi-part standard defining requirements and providing guidelines for achieving functional safety in E/E systems installed in series production passenger cars.
[13] The compliance process usually takes time as employees need to be trained in order to develop the expected competencies.
It is a multi-part standard defining requirements and providing guidelines for achieving functional safety in E/E systems installed in series production passenger cars.