GB/T 19670-2023: Safety of machinery - Prevention of unexpected start-up

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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.

Basic Data

Standard ID	GB/T 19670-2023 (GB/T19670-2023)
Description (Translated English)	Safety of machinery - Prevention of unexpected start-up
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J09
Classification of International Standard	13.110
Word Count Estimation	14,157
Date of Issue	2023-09-07
Date of Implementation	2023-09-07
Older Standard (superseded by this standard)	GB/T 19670-2005
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration