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AS/NZS 4024.1603:2019

$33.80

Safety of machinery – Design of controls, interlocks and guards – Prevention of unexpected start-up

Published By Publication Date Number of Pages
AS 2019-07-29 23
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The objective of this Standard is to specify requirements for designed-in means aimed at preventing unexpected machine start-up to allow safe human interventions in danger zones.

Scope

This document specifies requirements for designed-in means aimed at preventing unexpected machine start-up (see 3.2) to allow safe human interventions in danger zones (see Annex A).
This document applies to unexpected start-up from all types of energy source, i.e.:
— power supply, e.g. electrical, hydraulic, pneumatic;
— stored energy due to, e.g. gravity, compressed springs;
— external influences, e.g. from wind.
This document does not specify performance levels or safety integrity levels for safety-related parts of control systems. While available means to prevent unexpected start-up are identified, this document does not specify the means for the prevention of unexpected machine start-up for specific machines.
NOTE A type-C standard can define the required means for the prevention of harm arising from unexpected start-up. Otherwise, the requirements for a specific machine need to be determined by risk assessment outside the scope of this document.

AS/NZS 4024.1603:2019
$33.80