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RNMB Hussar engaged in operational duties with the Royal Navy.<br />
This is a development of ATLAS ELEKTRONIK UK’s ARCIMS USV.<br />
© ATLAS ELEKTRONIK UK 2020<br />
8.12 SAFETY STANDARDS<br />
8.12.1 There are a number of functional safety standards that should be considered for adoption when providing remote<br />
or autonomous systems using electrical, electronic or software based solutions. These include ISO 26262 from<br />
the automotive sector and IEC 61508, which detail how to establish the safety integrity level (SIL) for functions<br />
critical to safety in the system and the specification, design, implementation and testing processes that should<br />
be followed to ensure the required integrity is met.<br />
8.12.2 IEC 61508 is an international standard published by the International Electrotechnical Commission consisting of<br />
methods on how to apply, design, deploy and maintain automatic protection systems called safety-related<br />
systems. It is titled Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems<br />
(E/E/PE, or E/E/PES).<br />
8.12.3 IEC 61508 is a basic functional safety standard applicable to all industries. It defines functional safety as: “part<br />
of the overall safety relating to the EUC (Equipment Under Control) and the EUC control system which depends<br />
on the correct functioning of the E/E/PE safety-related systems, other technology safety-related systems and<br />
external risk reduction facilities.” The fundamental concept is that any safety-related system must work correctly<br />
or fail in a predictable (safe) way.<br />
8.12.4 The standard has two fundamental principles:<br />
n An engineering process called the safety life cycle is defined based on best practices in order to discover and<br />
eliminate design errors and omissions<br />
n A probabilistic failure approach to account for the safety impact of device failures<br />
8.12.5 Zero risk can never be reached, only probabilities can be reduced.<br />
8.12.6 Non-tolerable risks must be reduced (ALARP).<br />
8.12.7 Optimal, cost effective safety is achieved when addressed in the entire safety lifecycle.<br />
MASS UK Industry Conduct Principles and Code of Practice Version 7 73
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