GB/T 29469-2024Cleanrooms and associated controlled environments - Evaluation of performance and rationality (English PDF)

3.1 controlled environment

A specific area where pollution sources are controlled by prescribed methods.

[Source. GB/T 25915.6-2010, 2.45]

3.2 Cleanroom and associated controlled environment

A room (clean room) or confined space (clean area) that is controlled and classified according to the concentration of airborne particles, microbial limits, and chemical concentrations.

And its related limited areas where pollution sources are controlled in accordance with prescribed methods (related controlled environments).

3.3 Verification

Review and inspect the technical indicators, technical measures, management measures, and operating results of clean rooms and related controlled environments.

3.4 Envelope structure

A general term for interior parts supported by a frame.

Note. Including ceiling, walls (display screens integrated with walls, lockers and other related devices), floors, doors and windows, various interfaces and seals, etc.

[Source. GB/T 36372-2018, 3.3, modified]

3.5 monitoring

Measurements performed according to specified methods and plans to demonstrate facility performance.

Note 1.Monitoring can be classified as continuous, intermittent or periodic. If it is periodic, the frequency must be specified.

Note 2.Monitoring information is used to observe dynamic trends and provide process support.

[Source. GB/T 25915.2-2021, 3.2, modified]

3.6 Risk

The likelihood of the hazard occurring and its severity.

[Source. GB/T 25915.6-2010, 2.114] […]