GB/T 41481-2022: Road vehicles - Cleanliness of components and systems

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Scope

WARNING: The use of this document can involve hazardous materials, operations and
equipment. This document does not purport to address all of the safety problems
associated with its use. It is the responsibility of the user of this document to establish
appropriate safety and health practices and to determine the applicability of any other
restrictions prior to its use.
This document specifies requirements for applying and documenting methods for determining
particulate contamination on functionally-relevant components and systems (cleanliness
inspection) of road vehicles.
A cleanliness inspection comprises the basis of an assessment of technical cleanliness, which
is performed, for example, under the following circumstances:
--- initial inspection and evaluation;
--- inspection of incoming and outgoing components; and
--- quality control or monitoring of manufacturing processes relevant to cleanliness (e.g.
cleaning, surface treatment and assembly processes).
This document is intended to improve the informative quality and comparability of test results.
It also defines the standardized expression of cleanliness specifications and cleanliness test
results in the quality chain of the automotive industry.
This document does not apply to the following:
--- detection of filmy contamination (grease, oils, etc.);
--- application of non-quantifiable particulate detection methods on test components (e.g.,
visual assessment, wipe test with clean cloth, etc.); and
--- characterization of operating fluids (fuel, oils, coolants, brake fluid, etc.).
This document does not define any cleanliness limit values for specific components or systems.
The degree of cleanliness required for a specific component or system is dependent on a number
of highly individual factors. Cleanliness specifications are intended to be undertaken only by
specialists who not only know the component concerned but also the system it is built into, the
later conditions of use, technically-feasible practices and possible consequences for
manufacturing processes and the supply chain. Guidance for deriving limit values can be found
in Annex H.

Basic Data

Standard ID	GB/T 41481-2022 (GB/T41481-2022)
Description (Translated English)	Road vehicles - Cleanliness of components and systems
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	R16
Word Count Estimation	153,173
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration