In ultra-controlled environments such as the clean rooms, le nettoyage et la désinfection sont des étapes critiques pour assurer la qualité des activités menées. Deux procédures clés permettent d’atteindre ces standards : the graying and the blanking.
Souvent confondues, ces deux procédures répondent pourtant à des objectifs complémentaires. Cet article vous explique leurs différences, leur rôle et leur importance dans la gestion de la particulate and microbiological contamination.
Greying: preparing surfaces
Visit graying is a preparatory stage cleanroom cleaning. It is generally carried out :
- before commissioning or installing sensitive equipment.
- after maintenance or construction work,
The steps involved in grayscale upgrading include :
- Stop ventilation
- Allows suspended particles to fall back.
- The air handling unit is then restarted to renew the air.
- Rough surface cleaning
- Walls, ceilings, floors and furniture are dusted.
- Use of suitable detergents
- Non-corrosive products, compatible with specific cleanroom surfaces.
| Résultat : un environnement dégrossi, prêt à recevoir un traitement de désinfection approfondi.
Greying is an essential phase in preparing the ground for the blanking. It ensures that surfaces are clean and free of any coarse particles that could interfere with final disinfection.
Blanking: the final disinfection step
After ’mise à gris", comes "mise à blanc". This more advanced operation aims to achieve a level of’deep cleaning. This step is mandatory before commissioning or restarting a cleanroom, especially after maintenance work or prolonged shutdowns.
Blanking steps include :
- Particle decontamination Surface decontamination: Surfaces are subjected to a fine decontamination process, removing not only visible particles, but also those not visible to the naked eye.
- Final disinfection Disinfection: This is the in-depth disinfection phase, in which all parts of the room (ceilings, walls, floors, supports, etc.) are treated to eliminate any microbiological or chemical contamination.
Blanking enables rooms to comply with current standards, such as NF EN ISO-14644 and NF S 90-351, et d’obtenir leur qualification ou requalification. Aussi, cette étape est cruciale pour assurer que l’environnement est parfaitement contrôlé, minimisant ainsi les risques de contamination.
Pourquoi ces deux étapes sont-elles indispensables ?
Ensuring cleanroom quality and compliance. Greying and blanking are much more than just cleaning: they're about qualification procedures who :
- extend service life equipment
- guarantee the security for sensitive processes
- ensure regulatory compliance
Here are a few reasons why these steps are essential:
- Contamination prevention Cleanrooms are used in sensitive sectors such as pharmaceuticals and biotechnology, where the slightest contamination can have serious consequences.
- Compliance with standards : Greying and blanking operations ensure that rooms meet cleanliness and hygiene standards. indoor air quality required by regulators.
- Extending equipment service life By maintaining a clean environment, these steps also contribute to equipment longevity.
Invaluable expertise for clean rooms
Graying and blanking are essential to guarantee the quality and safety of controlled environments. They require expertise, suitable products and compliance with protocols.
Ainsi, confier ces opérations à des professionnels est indispensable pour assurer conformité et sécurité.
At IGIENAIR, We are experts in cleanroom qualification, decontamination and maintenance. We have the equipment and know-how to perform to the highest standards.
Contact our IGIENAIR experts for a free, personalized quote!
