Functional Safety 2014

TÜV SÜD Product Service

Objectives

To determine the hazards, hazardous events and hazardous situations relating to the EUC and the

EUC control system (in all modes of operation), for all reasonably foreseeable circumstances,

including fault conditions and reasonably foreseeable misuse (see 3.1.14 of IEC 61508-4);

To determine the event sequences leading to the hazardous events; The scope will be dependent

upon the phase reached in the overall, E/E/PE system and software safety lifecycles (since it may

be necessary for more than one hazard and risk analysis to be carried out). For the preliminary

hazard and risk analysis, the scope will be as defined by the output of the overall scope definition.

IEC 61508

Part 1 Clauses

7.4.1

7.4.2

IEC 62061

Not covered

In the introduction

Figure 1 references ISO

12100 and 14121 for the

design and risk

assessment of the

machine

Note: 12100 and 14121

are now combined

ISO 13849

Not covered

Clause 4.1:

The SRP/CS shall be

designed and

constructed so that the

principles of ISO 12100

and ISO 14121 are fully

taken into account

Hazard and risk analysis