clean: state of cleanliness of a component or a fluid that meets the specified cleanliness level that is to say with a
measured cleanliness level (CLm) lower than or equal to the specified cleanliness level (CLs)
cleaning: industrial process for the reduction of the quantity of contaminants present in a fluid, in or on a component until the specified cleanliness level (CLs) has been reached
cleaning curve: progress curve of the cleanliness level of a fluid or component subject to cleaning
cleanliness: condition of a product, surface, device, gas, liquid, etc., characterized by the absence of particulate
contamination
cleanliness audit: methodical and independent examination with the view of determining whether the manufacturing process of a product and all the relevant activities provide the assurance that the cleanliness level shall be effectively obtained and/or maintained
Component Cleanliness Code CCC: alpha-numeric expression of the cleanliness level (CL) of a component measured or specified by the particle size distribution of the contaminants
cleanliness inspection: range of operations aimed at bringing as many contaminants as possible from a component to a measuring equipment for their analysis or quantification
cleanliness inspection equipment: all equipment and products used to extract, collect and analyse the contaminants in order to determine the cleanliness level
cleanliness level CL: amount and/or nature of contaminant present on the controlled surfaces and/or in controlled volumes of a component
cleanliness specification: document that specifies the cleanliness level required (CLs) for a given component along with the agreed inspection method
clean room: room whose ambient particulate contamination level does not have negative effect on the cleanliness measurements
cleanroom: room in which the concentration of airborne particles is controlled, and which is constructed and used in a manner to minimize the introduction, generation, and retention of particles inside the room, and in which other
relevant parameters e.g. temperature, humidity, and pressure, are controlled as necessary [ISO 14644-1:1999]
clean sampling container: sampling device cleaned and conditioned according to an appropriate and validated method
coincidence: presence of more than one particle in the sensing volume of an APC at the same time
collection equipment: any device (e.g. conical flask, beaker, tray, funnel, collection area of the spraying chamber) with a size and a shape suited to the collection of all the extraction liquid draining from the test component
component: general term used to cover a part, a sub-assembly, a part assembly or a system fitted to a road vehicle
cleaning liquid: liquid compatible with the extraction sample used for conditioning of the analysis equipment and/or monitoring of the blank value of the analysis set-up
container: any device, the characteristics of which allow the test component to be handled and transported from a
location (e.g. the production line) to the test location and/or to handle liquids during the test
contaminant: undesirable substance which is in suspension in a fluid or in or on a component
contamination: all contaminants in a fluid, system or on a component
controlled surface area: surface of a component subjected to cleanliness requirement and/or the subject of a cleanliness inspection
controlled volume: volume of a component subjected to a cleanliness requirement and/or the subject of a cleanliness inspection or measurement
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