Processus de construction d'une salle blanche

Building out a cleanroom and adjacent environments is a multi-stage construction process and particular protocols must be maintained at each stage of the construction to insure the integrity of the cleanroom. The stages are Stage 0 — Regular Construction; Stage 1 — Clean Construction; Stage 2 — Pre Cleanroom Construction; and, finally, Stage 3 — Active Cleanroom. Following are the important steps in each stage.

The regular construction phase is what must contractors are used to, but in the context of a cleanroom special attention should be paid to housekeeping to set the tone for cleanliness. At this stage there are no material restrictions and standard personal protective equipment, such as hard hats, safety glasses and vests, should be used. Take care to protect building materials as well. Construction workers should apply standard good housekeeping practices and complete daily and hourly clean-ups.

All drywall work should be complete if possible before the first stage of actual clean construction. During this phase, conduct daily and hourly cleanup using vacuums and start using a daily cleaning service. There should be no unnecessary trash or debris in cleanroom area and you should use multiple rugs as well as sticky mats to prevent dirt from entering. This is also when you begin to conduct particle counts.

In the second stage, control and limit access to the cleanroom area and establish a smock room/air lock for entry/exit with an air cleaner. Workers must wear booties in the area and use sticky mats on floors. There should be no wood, cardboard, or paper allowed in the area. A HEPA vac is required for all cutting/drilling in the cleanroom and the air systems should be on, but not the FFUs.

The third stage, which is for punching and finishing details, is the most restrictive. It includes all the precautions of Stage Two, plus several additional steps. At this stage, access is limited and workers must be fully smocked, including wearing lab coat or coveralls, hair/beard nets, booties, and gloves, and they must use a designated smock room. In addition to operating the MUA system, recirculation air is continuously cleaning the air.

Le respect de toutes les exigences spécifiques d'une salle blanche entraîne une augmentation des coûts de construction, mais celle-ci varie en fonction du type de salle blanche, les salles les plus étroites et les plus restrictives étant les plus coûteuses. En moyenne, la fourchette de prix des salles blanches s'étend de $1 000 par pied carré pour une salle de classe 1 à moins de $200 par pied carré pour une salle de classe 100 000.

Ne vous laissez pas intimider par le processus de construction d'une salle blanche. En fin de compte, il ne s'agit que d'une construction. En suivant les plans et les spécifications tout en adhérant aux lignes directrices de chaque phase, la construction d'une salle blanche peut être exécutée avec succès et sans trop de problèmes. Pour faciliter le processus, n'oubliez pas que la préconstruction revêt une importance particulière : élaborez donc un calendrier détaillé dès le début et gérez soigneusement les achats. Communiquez clairement le calendrier de construction à toutes les parties afin que tout le monde soit sur la même longueur d'onde. Comme les choses sont appelées à changer, soyez prêt à gérer les imprévus et faites preuve de souplesse et d'adaptabilité.

Constructing cleanrooms is challenging, requiring careful attention to specific details in both design and construction procedure. Using the accepted industry standards and the UM as blueprints, however, will facilitate the successful completion of a cleanroom. Working in partnership with the cleanroom operator on the specific design assures that the resulting room will meet the needs of end users and enable them to achieve a desired ROI from the operating space.