Status
Gældende
Type
Standard
Varenummer
M235537
Udgivelsesdato
2010-06-18
Komite
CLC/SR 65A
IEC/TC 65/SC 65A
Internationale relationer
IEC 61508-2:2010 ED2 IDT, EN 61508-2:2010 IDT
Dansk udvalg
Antal sider
100
Scope
This part of the IEC 61508 series
a) is intended to be used only after a thorough understanding of IEC 61508-1, which provides
the overall framework for the achievement of functional safety;
b) applies to any safety-related system, as defined by IEC 61508-1, that contains at least
one electrical, electronic or programmable electronic element;
c) applies to all elements within an E/E/PE safety-related system (including sensors,
actuators and the operator interface);
d) specifies how to refine the E/E/PE system safety requirements specification, developed in
accordance with IEC 61508-1 (comprising the E/E/PE system safety functions
requirements specification and the E/E/PE system safety integrity requirements
specification), into the E/E/PE system design requirements specification;
e) specifies the requirements for activities that are to be applied during the design and
manufacture of the E/E/PE safety-related systems (i.e. establishes the E/E/PE system
safety lifecycle model) except software, which is dealt with in IEC 61508-3 (see Figures 2
to 4). These requirements include the application of techniques and measures that are
graded against the safety integrity level, for the avoidance of, and control of, faults and
failures;
f) specifies the information necessary for carrying out the installation, commissioning and
final safety validation of the E/E/PE safety-related systems;
g) does not apply to the operation and maintenance phase of the E/E/PE safety-related
systems – this is dealt with in IEC 61508-1 – however, IEC 61508-2 does provide
requirements for the preparation of information and procedures needed by the user for the
operation and maintenance of the E/E/PE safety-related systems;
h) specifies requirements to be met by the organisation carrying out any modification of
the E/E/PE safety-related systems;
NOTE 1.. This part of IEC 61508 is mainly directed at suppliers and/or in-company engineering departments, hence the inclusion of requirements for modification.
NOTE 2.. The relationship between IEC 61508-2 and IEC 61508-3 is illustrated in Figure 4.
i) does not apply for medical equipment in compliance with the IEC 60601 series.