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LabRequirements for various environmental conditions

Overall Principles

When environmental conditions may affect the quality of the results, the laboratory should prepare the necessary documentation. There are appropriate control measures for environmental conditions to ensure that they do not invalidate the test results or adversely affect them.

Temperature and humidity

a) When there are no special requirements for environmental temperature and humidity in the inspection and testing work, the temperature of the working environment should be maintained between 16°C and 26°C, and the relative humidity should be kept between 30% and 65%; b) When there are special requirements for environmental temperature and humidity in the inspection and testing work, the temperature and humidity should comply with the provisions of relevant national or industry standards.

Air Quality

The air quality in general workplaces (indoor) should comply with the provisions in GB/T 18883. Requirements for air quality in specific workplaces include: a) For workplaces involving occupational hazards such as emitted vapors, toxic and harmful gases, dust, smoke, mist, and harmful bioaerosols, the air quality should meet the requirements of occupational health-related standards and specifications such as GBZ2.1; b) For places involving the operation of pathogenic microorganisms, the air quality should comply with the requirements of biological safety-related standards and specifications such as GB 19489 and GB 50346; c) For places involving animal breeding and animal experiments, the air quality should meet the requirements of standards and specifications related to animal experimental institutions such as GB 50447, GB 14925, and GB/T 27416.

Luminaire

The lighting in the inspection and testing facilities should meet the requirements of the inspection and testing technical standards; the lighting standard values in areas without special requirements should be in accordance with the lighting standards in GB/T37140.

Noise

The inspection and testing room should not exceed a noise level of 55dB(A). Other rooms should comply with the provisions of JGJ/T67. Power equipment should meet the noise standards specified by national and industry standards. Appropriate sound insulation measures should be taken when necessary.

Electromagnetic Radiation/Electrostatic

If electromagnetic radiation adversely affects detection activities or instruments and equipment, appropriate facilities such as electromagnetic shielding, absorption, grounding, isolation, or filtering should be in place; if the detection items or the instruments and equipment used are sensitive to static electricity, appropriate anti-static worktops, anti-static floors, grounding facilities, and other anti-static supplies should be installed.

Vibration and Impact

If the inspection and testing activities or the equipment used are sensitive to vibrations and impacts, they should be effectively isolated from vibration and impact sources to ensure they do not affect the inspection and testing activities.

External Environment

The laboratory should identify and evaluate the adverse effects of external environmental conditions (such as chemicals, biology, noise, vibration, strong electromagnetic fields, and flammable and explosive areas) on the validity of results and personnel health, and take corresponding control measures based on the extent of the assessed impact. According to the actual conditions of the inspection and testing site, facilities should be in place to mitigate the adverse effects of inspection activities on external air, water, and soil, and these facilities must comply with national and local laws, regulations, and relevant standards.