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Document CSA C22.2 NO 0.8-09 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
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CSA C22.2 NO 0.8-09 Document Information:
Title
Safety functions incorporating electronic technology
CSA Standards
Publication Date:
Oct 1, 2009
Scope:
This Standard applies to products and component devices where
the electronics technology handles the operational logic including
the safety features. This Standard applies to the following
configurations:
(a) safety control function(s) implemented in hardware only;
and
(b) safety control function(s) implemented in some combinations
of hardware and software.
The scope of this Standard includes the sensors and actuators
that are associated with the safety control.
The requirements in this Standard apply to products where
failure in either the hardware or software, or any associated
devices, can lead to a hazard.
This Standard prescribes minimum requirements for the
documentation necessary to evaluate and confirm that the equipment
meets the safety requirements as specified in this Standard.
This Standard applies to a product identified under a relevant
product standard and where the purpose of the product, along with
its features and operational role, can be described.
Note: An understanding of the specific
end-use environment and any risks associated with the product are
essential for this Standard to apply.
This Standard does not cover general-purpose applications or
products where the end-application or the safety requirements for
the product are not known or cannot be described, such as for a
general-purpose Programmable Logic Controller (PLC).
The requirements and applicable conditions stated in the
relevant product standard take precedence over the requirements
outlined in this Standard.
In CSA Standards, "shall" is used to express a requirement,
i.e., a provision that the user is obliged to satisfy in order to
comply with the standard; "should" is used to express a
recommendation or that which is advised but not required; and "may"
is used to express an option or that which is permissible within
the limits of the standard.
Notes accompanying clauses do not include requirements or
alternative requirements; the purpose of a note accompanying a
clause is to separate from the text explanatory or informative
material.
Notes to tables and figures are considered part of the table or
figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative
(non-mandatory) to define their application.
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