What Safety Measures Does The Exhaust System of A Fume Hood Have

The exhaust system of the fume hood has adopted multiple safety measures in its design to ensure the safety of the laboratory personnel and the stability of the laboratory environment. The following are the main safety measures of the fume hood exhaust system:

First, negative pressure environment

Function: A negative pressure environment is created inside the fume hood through the exhaust system, preventing harmful gases and particulate matter from escaping from the interior of the fume hood.

Effect: This design effectively prevents pollutants from spreading into the laboratory and protects the health of the laboratory personnel.

Second, local air supply and air flow barriers

Function: The fume hood forms a certain air flow barrier inside the fume hood through local air supply.

Effect: This helps further prevent the spread of harmful gases and particulate matter into the laboratory, while ensuring that the air in the operation area of the laboratory personnel is fresh.

Third, high-efficiency filtration system

Composition: The exhaust system of a fume hood is usually equipped with high-efficiency filters, such as activated carbon filters, etc.

Function: These filters can effectively remove particulate matter and chemicals from the air.

Effect: Ensure that the discharged air meets environmental protection requirements and reduces pollution to the environment.

Fourth, wind speed monitoring and control system

Function: The exhaust system of the fume hood is equipped with a wind speed monitoring and control system to monitor the wind speed inside the fume hood in real time.

Effect: When the wind speed is lower than the set value, the system will automatically adjust the fan speed to ensure that the negative pressure environment inside the fume hood is effectively maintained.

Fifth, emergency shutdown and alarm system

Function: Fume hoods are usually equipped with emergency shut-off and alarm systems.

Effect: In case of emergencies such as chemical spills or fires, laboratory personnel can quickly close the fume hood and trigger the alarm system to take timely response measures.

Sixth, explosion-proof and anti-corrosion design

Function: For special experimental requirements, the exhaust system of the fume hood may adopt explosion-proof and anti-corrosion designs.

Effect: This helps ensure that the fume hood can operate normally and protect the safety of laboratory personnel when handling flammable, explosive or corrosive substances.

Seventh, regular inspection and maintenance

The exhaust system of the fume hood needs to be inspected and maintained regularly.

Effect: This helps ensure the normal operation and security of the system, and promptly identify and eliminate potential safety hazards.

Eighth, operation norms and training

Function: The laboratory should formulate operation norms for fume hoods and provide relevant training to laboratory personnel.

Effect: This helps ensure that laboratory personnel can use fume hoods correctly and safely, reducing safety accidents caused by improper operation.

In summary, the exhaust system of the fume hood ensures the safety of laboratory personnel and the stability of the laboratory environment through a variety of safety measures, including negative pressure environment, local supply air and air flow barriers, high-efficiency filtration system, air velocity monitoring and control system, emergency shutdown and alarm system, explosion-proof and anti-corrosion design, regular inspection and maintenance, as well as operation norms and training.