Safety Manager Safety Manual - Tuv-fs.com

1 – The Safety Manual
• If you are in the process sector and you are an owner/user, it is strongly
recommended that you pay attention to the IEC 61511 (ANSI/ISA 84.00.01).
For details see “IEC 61511, the standard for the process industry” on page 7.
• If you are in the process sector and you are a manufacturer, it is strongly
recommended that you pay attention to the IEC 61508. For details see “IEC
61508, the standard for all E/E/PE safety-related systems” on page 6.
• If you are in another sector, it is strongly recommended that you look for, and
use, your sector specific IEC standard for functional safety (if there is one). If
none exists, you can use the IEC 61508 instead. For details see “IEC 61508,
the standard for all E/E/PE safety-related systems” on page 6
IEC 61508 and IEC 61511 terminology
This guide contains both IEC 61508 and IEC 61511 related terminology.
As the IEC 61511 sits within the framework of IEC 61508 most of the
terminology used may be interchanged. Table 1 on page 6 provides an overview
of the most common interchangeable terminology.
Table 1 IEC 61508 versus IEC 61511 terminology
IEC 61508 terminology
safety function
electrical/electronic/programmable
electronic (E/E/PE) safety-related system
IEC 61511 terminology
safety instrumented function
safety instrumented system (SIS)
IEC 61508, the standard for all E/E/PE safety-related systems
The IEC 61508 is called “Functional safety of
electrical/electronic/programmable electronic safety-related systems”
IEC 61508 covers all safety-related systems that are electrotechnical in nature
(i.e. electromechanical systems, solid-state electronic systems and
computer-based systems).
Generic standard
The standard is generic and is intended to provide guidance on how to develop
E/E/PE safety related devices as used in Safety Instrumented Systems (SIS).
The IEC 61508:
• serves as a basis for the development of sector standards (e.g. for the
machinery sector, the process sector, the nuclear sector, etc.).
• can serve as stand-alone standard for those sectors where a sector specific
standard does not exist.
6 Release 131, Issue 4.2