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HEPA-filtered vacuum and traditional wipe-down methods

Le 25 octobre 2016, 03:45 dans Humeurs 0

Simply put, every square inch of a cleanroom should be absolutely pristine.Ceiling Panel , lighting units, HEPA filtration units, sprinkler heads, walls, glass surfaces, process equipment, piping systems, floors, and manufacturing equipment should all be decontaminated regularly. Even the ambient air must be monitored and maintained at proper levels. HEPA-filtered ventilation systems assisted by preventative measures help manufacturers limit airborne contamination. However, in order to assure environmental purity, regular housecleaning procedures are necessary.

Cleaning with both a HEPA-filtered vacuum and traditional wipe-down methods are standard housekeeping procedures in most cleanrooms. Yet in critical cleaning situations, vacuuming is often the more efficient method because particles are retained inside the machine with little chance of being exhausted into the atmosphere (provided your vacuum has a HEPA-filtered exhaust stream). Vacuuming also eliminates the fiber particles that swabs and wipers may leave behind. In fact, measurements taken in one cleanroom setting found that a dusting system using disposable cloths polluted the space twice as much as using a HEPA-filtered vacuum cleaner.

So what should your cleanroom vacuum include? First and foremost, any vacuum cleaner used in a biotech parenteral cleanroom must be HEPA-filtered to ensure that 99.97% of all particles down to and including 0.3 microns are collected and retained. In addition, it is absolutely critical that the HEPA filter be installed after the motor to filter the exhaust stream. The motor’s commutator and carbon brushes generate dust, and if the exhaust stream is not filtered than the dust will be released into the environment.

A word of caution: not all HEPA-filtration systems are created equal. Make sure the vacuum you select contains a multi-stage, graduated filtration system for peak operating efficiency. A graduated filtration system uses a series of progressively finer filters to trap and retain particles as they move through the vacuum. The largest particles are captured first by coarser filters; smaller particles are then caught and retained by the finer HEPA filters. This multi-stage system protects the HEPA filters from blockage and excessive wear-and-tear, maintaining peak performance. When equipped with an ULPA filter, the system should retain up to 99.99% of all ultra-fine particles, down to and including 0.12 microns in size.

Additionally, the filtration system in your vacuum should use oversized filters, which slow airflow across the larger surface area and optimize the air-to-cloth ratio. This allows the vacuum to easily collect large volumes of debris over extended periods of time with minimal maintenance.

Besides having an exceptional filtration system, any vacuum used in a cleanroom should be constructed of non-particle generating materials. For example, non-porous, stainless steel vacuums – equipped with smooth hoses and attachments – enable personnel to quickly wipe down and decontaminate equipment for faster, simpler sanitization and validation. And it must be specially packaged to prevent contaminates from entering the  Clean Room environment when delivered.

Clean Room are important features in the production of silicon chips

Le 21 octobre 2016, 02:22 dans Humeurs 0

A work area in which the air quality, temperature and humidity are highly regulated in order to protect sensitive equipment from contamination. Clean Room are important features in the production of silicon chips, hard disk drives and other technologies such as satellites. The air in a clean room is repeatedly filtered to remove dust particles and other impurities that can damage the production of highly sensitive technologies.

The measure of the air quality of a clean room is described in Federal Standard 209. Clean rooms are rated as "Class 10,000," where there exists no more than 10,000 particles larger than 0.5 microns in any given cubic foot of air; "Class 1000," where there exists no more than 1000 particles; and "Class 100," where there exists no more than 100 particles. Hard disk drive fabrication requires a Class 100 clean room.

People who work in clean rooms must wear special protective clothing called "bunny suits" that do not give off lint particles and prevent human skin and hair particles from entering the Clean Room Supplies 's atmosphere.

Gzcleanroom which aerial particulates

Le 20 octobre 2016, 03:04 dans Humeurs 0

A apple-pie allowance (or cleanroom) Clean Room is an amid amplitude in which aerial particulates, contaminants, and pollutants are kept aural austere limits. In industry, apple-pie apartment are acclimated in the accomplish and application of accouterments such as chip circuits ( IC s) and harder drive s. In biotechnology and medicine, apple-pie apartment are acclimated if it is all-important to ensure an ambiance chargeless of bacteria, viruses, or added pathogens. In addition, the temperature and clamminess may be controlled.

Clean allowance blueprint for chapped amount (such as dust) are authentic according to the best acceptable atom diameter, and aswell according to the best acceptable amount of particles per assemblage aggregate (usually cubic meters). For non-particulate contaminants, the best acceptable body in agreement of bacilli per cubic meter, or atom s per cubic meter, is specified. Four axiological rules administer to apple-pie rooms. First, contaminants have to not be alien into the controlled ambiance from the outside. Second, the accoutrement aural the controlled ambiance have to not accomplish or contrarily accord acceleration to contaminants (for archetype as a aftereffect of friction, actinic reactions, or biological processes). Third, contaminants have to not be accustomed to accrue in the controlled environment. Fourth, absolute contaminants have to be alone to the greatest admeasurement possible, and as rapidly as possible.

In the United States, Federal Accepted 209E (FED-STD-209E) was acclimated until the end of November 2001 to ascertain the requirements for apple-pie Modular Clean Room. On November 29, 2001, these standards were abolished by the advertisement of ISO blueprint 14644-1.

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