Control measures for cleanliness (ISO level 5) of electronic grade propylene oxide filling line?

Electronic grade propylene oxide is a kind of high purity chemical, which is widely used in electronic manufacturing, semiconductor production and other fields. In order to ensure its high purity and product quality during the filling process, cleanliness control is essential. This article will detail the ISO 5 level cleanliness control measures in the electronic grade propylene oxide filling line to help readers fully understand how to achieve and maintain this high standard.

1. purification equipment selection and configuration

ISO Class 5 cleanliness requires that the concentration of particulate matter in the filling environment must be controlled within a specific range. In order to achieve this goal, reasonable purification equipment configuration is the key. The following are several commonly used purification equipment and their functions:

1. Air filtration system: High efficiency air filters (HEPA) and ultra-high efficiency air filters (ULPA) are the core equipment to maintain cleanliness. These filters effectively remove particles from the air and ensure a dust-free filling environment.

2. Air shower room: when people enter the clean area, they need to remove dust through the air shower room to avoid the pollution of the environment by particles carried by the human body.

3. Conveyor system: Use airlocks or conveyor belts to safely send materials into the clean area, reducing the number of door openings and the risk of pollution caused by human operations.

2. Process Optimization

In addition to the configuration of the equipment, the optimization of the process is also an important part of ensuring cleanliness. The following are the key process control points:

1. Container cleaning and drying: Clean the container with deionized water and dry it in a dust-free environment. Clean the cleaning process to use a clean cloth to avoid the introduction of new contaminants.

2. Propylene oxide storage and transport: Propylene oxide should be stored in a closed container and protected by an inert gas to prevent oxidation and contamination. The use of dedicated piping is recommended for the delivery process to reduce the possibility of open operation.

3. Filling process control: the use of equipment that meets clean standards when filling, and real-time monitoring of the temperature and humidity of the filling environment and particle concentration. Operators should wear dust-free clothing to reduce the interference of personnel activities to the environment.

3. personnel operation specification and training

Personnel operation is an important factor affecting cleanliness, and strict management and training can effectively reduce the risk of pollution. Here are a few areas to note:

1. Personnel management: personnel entering the clean area shall undergo strict training and be familiar with the cleaning procedures and operating specifications. Limit the entry of non-essential personnel and reduce pollution caused by the movement of personnel.

2. Operation specification: in the clean area, personnel should maintain the minimum range of motion to avoid strenuous activities to produce particulate matter. All operations must be performed in accordance with standardized procedures to reduce the risk of human error and contamination.

3. Regular training and assessment: regular organization of clean operation training and assessment, to ensure that everyone has mastered the latest clean technology and operating procedures.

4. routine maintenance and monitoring

Maintaining cleanliness requires not only initial equipment configuration and process optimization, but also routine maintenance and monitoring. Here are a few key maintenance measures:

1. Equipment maintenance: regularly check and replace the air filter to ensure that the filtration efficiency meets the requirements. Carry out regular maintenance on purification equipment to find and solve problems in time.

2. Environmental monitoring: Use professional monitoring instruments to regularly detect the particle concentration, temperature and humidity and microbiological indicators in the clean area to ensure compliance with ISO 5 standards.

3. Record and analysis: record the results of each monitoring and maintenance in detail, analyze the change trend of cleanliness, and adjust control measures in time to ensure long-term stability.

5. summary

The clean filling of electronic grade propylene oxide is a complex system engineering, which requires comprehensive control from many aspects such as equipment selection, process optimization, personnel management and daily maintenance. Through scientific configuration and strict management, ISO level 5 cleanliness standard can be effectively realized to ensure the high purity and quality stability of the product. In the future, with the continuous development of clean technology, the production efficiency and product quality of electronic grade propylene oxide will be further improved, providing more support for the development of electronic manufacturing industry.