There are many different components to a cleanroom that keep particulates out of the air. Among them are garments. While workers must wear special garments to protect cleanroom material, the garment is often not enough. Air showers are used to clean gowned personnel before entering a workspace and after leaving a hazardous workspace.
An air shower is a self-contained air recirculation system installed at a cleanroom entrance. There are doors on either side of the shower, and they cannot be open at the same time. An employee enters the air shower area and stands in front of the nozzles or slots of the shower. Class 100 filtered air blows at high velocity streams onto the employee. As the employee raises his arms and rotates in place, the flapping effect the air has on his clothes “scrubs” particulates from his garments. After … Read More »
One of the most costly and important factors in building a cleanroom is air control. Cleanrooms are pressurized and use advanced filters that remove contamination-causing particulates. These airborne contaminates are not the only environmental issue in the cleanroom, though.
Humidity control is of the utmost importance in a cleanroom. Too much humidity can encourage bacteria growth. Additionally, some products made in cleanrooms, like sutures, are moisture-activated and can start to degrade if the humidity is too high. Too little humidity can cause static electricity. Static electricity is a major issue in cleanrooms, especially those for electronics. Electrostatic discharge can render some parts useless. Also, accidental static shocks to humans can distract workers (and they can hurt!)
Outdoor air has a direct effect on the humidity level in a cleanroom. Finding the right equipment to adjust for this can be difficult. Many … Read More »
Customer and registration audits can be stressful, and even more so when a company questions its preparedness. By issuing several internal audits throughout the year, these second and third party audits will be more successful. Additionally, employees will be better experts in policies, procedures, and instructions.
Jan Eudy wrote a thorough article on the topic for Controlled Environments called, “Audit for Compliance.” Here is a summary of considerations when preparing an internal audit.
Know what and how to audit. Eudy writes: “Internal audits should cover the full spectrum of the company’s processes and be designed to close the loop between the industry’s standards, customers’ specifications, and the company’s people, processes, and product.” Previous audits, including internal audits, can serve as guidelines for which areas to pay the most attention to. Auditors will also focus on what has changed since the last … Read More »
As cleanrooms continues to evolve, standard cleanrooms are not always the best option anymore. Many companies are finding that modular designs best fit their needs. Modular cleanrooms offer more flexibility, little disruption, and they often cost less than a conventional cleanroom. However, they are not always a fit. Here are some pros and cons to this alternative.
One of the best features of the modular cleanrooms is that they allow for flexibility. They can be built almost anywhere, disassembled and reassembled, redesigned, and moved from one location to another. This is especially beneficial for companies that plan to expand. As a company’s operations grow, the cleanroom can change size and shape or just be relocated as necessary.
In saying the structures can be built anywhere, think parking lots, underground laboratories, and adjacent to existing cleanrooms. According to MaryBeth DiDonna’s article, “Building … Read More »