Safety control circuits have been segmented, depending on their ability to maintain their
integrity in the event of a
failure.
In the United States, only one level of safety system integrity has been defined:
control reliability.
Control reliability typically incorporates
redundant controls and self-checking circuitry to maintain a safe working environment.
Typically, both
ANSI and
OSHA have associated
control reliability requirements with the
point of operation of hazardous machines, where
operators feed and remove parts.
Glossary Term
Integrity: (Machine Safety) The degree to which a circuit, system or device can be expected to perform an anticipated function unimpaired in the even of a fault. [ MORE » ] |
