T/CIQA 3-2020 Active Group standards

T/CIQA 3-2020 Laboratory air curtain exhaust cabinet system technical specifications

Publish Date: 2020-04-14 Implement Date: 2020-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CIQA 3-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Integrated

ICS Name: Other services

Publish Date: 2020-04-14

Implement Date: 2020-05-01

Scope

Scope: This standard specifies the terms and definitions, performance parameters, technical requirements, test methods, inspection rules, marking, packaging, and storage of laboratory curtain-type exhaust hood systems. The curtain-type exhaust hood systems in this standard are applicable to the ventilation and discharge of strong acid digestion fumes in inorganic mineral analysis laboratories, toxic and harmful gases in organic chemical or food laboratories, gases requiring ventilation and discharge in ordinary laboratories, or other venues requiring gas discharge not limited to those mentioned above. Main technical content: The main technical content of this standard includes: technical parameters, performance requirements, and test methods of laboratory curtain-type exhaust systems. It is divided into eight parts: I. Scope, II. Normative reference documents, III. Terms and definitions, IV. Classification, V. Technical requirements, VI. Experimental methods, VII. Inspection rules, and VIII. Marking, packaging, and storage. This standard newly defines: curtain-type exhaust hoods and shut-off pressure-independent valves, and references definitions: control concentration and leakage rate. Indicator selection: Based on actual face velocity measurement data, standard curtain-type exhaust systems can have a lower face velocity (≤0.3m/s), and make-up air type curtain-type exhaust systems can achieve near-zero face velocity (≤0.1m/s). Therefore, the average face velocity is selected within the range of 0～0.3m/s. Control concentration: Control concentration is an important parameter for the safety of exhaust hood ventilation. Currently, the domestic standard is 0.5ml/m3, while the ASHRAE 110-2016 "Performance Test Methods for Laboratory Exhaust Hoods" stipulates a control concentration of 0.05ppm, which is more stringent. Many domestic exhaust hoods have already passed relevant tests. The technical requirements of this standard integrate the requirements specified in the "