The laboratory fume hood of the institute is an important laboratory safety equipment used to provide local ventilation to avoid the harm of toxic, volatile or corrosive chemicals to the laboratory personnel and laboratory environment. Proper configuration of fume hoods is essential to ensure the health and safety of laboratory personnel. The following is a detailed introduction to the design and construction of the laboratory fume hood of the Institute.
Fume hood type selection.
Depending on the needs of the laboratory, the type of fume hood required needs to be determined first. There are generally several types of fume hoods:
Conventional Fume Hood: Suitable for the operation of most chemicals, providing basic ventilation protection.
Acid gas fume hood: Designed for the discharge of high concentrations of acid gases, the internal material has better corrosion resistance.
KRW Fume Hoods: Fire-resistant and suitable for handling flammable liquids and gases.
Unducted fume hoods: Use a filtration system instead of external exhaust and are suitable for places with high mobility or limited building conditions.
Each fume hood has its own specific application and should be selected based on the specific needs of the laboratory before configuration.
Space & Location.
When deciding on the number and location of fume hoods, consider the following factors:
Size of lab space: Make sure there is enough working space between the fume hood and other equipment.
Personnel flow: Fume hoods should not be installed in areas with frequent movement of people to prevent interference with airflow stability.
Emergency exits: The fume hood should be kept away from the emergency exits to avoid obstructing evacuation in the event of an emergency.
Water source and power supply: Ensure that there is sufficient water source and power connection around the fume hood.
Technical parameters. The technical parameters of the fume hood need to meet the following standards:
Airflow Rate: The recommended surface rate is usually 03-0.5 m sec to ensure effective sucking of harmful vapours and maintaining energy efficiency.
Exhaust airflow: Depends on the size of the fume hood and the ventilation requirements of the laboratory.
Noise level: Fume hoods with low noise should be selected as much as possible to create a comfortable working environment.
Lighting: There should be sufficient lighting inside the fume hood to facilitate observation and operation.
Safety Standards & Certifications.
The configuration of the fume hood should also follow national and international safety standards, such as the American standard ANSI Z95. European standard EN 14175, etc., and select products that have passed relevant safety certifications.
Ventilation system. The efficiency of the fume hood is directly dependent on the overall ventilation system of the laboratory, including the supply and exhaust air systems. Ventilation systems should be designed to effectively control airflow and ensure that harmful gases are safely channeled to the outside of the laboratory.
The configuration of the fume hood in the laboratory of the institute is a systematic project, which involves many considerations. From the selection of the type of fume hood to the setting of technical parameters, to the integration of the ventilation system and the subsequent operation and maintenance, it all needs to be carefully planned and executed. Only in this way can the safety inside the laboratory and the smooth progress of the experimental work be ensured. By strictly adhering to safety standards and certifications, lab managers can minimize risks on the job and create an efficient and safe research environment.