Different Types of LEV Thorough Examination and Testing
There are a variety of different types of tests for each system. Each test assesses a different aspect of an LEV system. The most common types of tests include:
Airflow and pressure testing:
This type of test measures the airflow and pressure at various points in the system to ensure that it is operating as intended. Airflow and pressure testing is typically carried out using anemometers and manometers.
Contamination exposure control testing:
This type of test assesses the effectiveness of the system at controlling exposure to hazardous contaminants. Contamination exposure control testing may involve using smoke tubes, real-time monitoring equipment, tyndall lamps and other testing methods.
Hood performance testing:
This type of test assesses the performance of the hoods on an LEV system. Hood performance testing may involve measuring the capture efficiency of the hoods or the airflow velocity at the face of the hoods. A static pressure is also taken immediately behind the hood. .
Ducts and filters examination:
This examination assesses the condition of the ducts and filters in an LEV system. Ducts and filters testing may involve inspecting the ducts for leaks and damage, and testing the filters to ensure that they are still effective at capturing hazardous contaminants.
Fans and motors testing:
This type of test assesses the condition of the fans and motors in a system. Fans and motors testing may involve measuring the fan speed and airflow, and inspecting the motors for wear and tear.
In addition to these general types of tests, there are also a number of more specialized tests that Synergy carry out on specific types of Local Exhaust Ventilation. For example, there are tests specifically designed for welding fume extraction systems, spray painting booths, and laboratory fume hoods.
Workplace Air Monitoring
The main purpose of LEV Testing is to ensure that the controls that you have put in place continue to provide adequate control against hazardous substances. The only real way of showing this is by employing an occupational hygienist to carry out workplace air monitoring.
Choosing the Right Type of LEV Test
The type of LEV test depends on the specific system being tested and the nature of the hazards controlled. For example, a system used to control exposure to welding fumes would require a different type of test than a system used to control exposure to dust.
It is important to consult with qualified engineers, such as Synergy, to determine the type of test required for your specific system. Synergy’s engineers assess systems and identify the potential hazards that it needs to control. They will then be able to recommend the appropriate type of test to ensure that the system is operating as intended and is adequately protecting workers from exposure to hazardous contaminants.