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 		<td class= Current Issues in Cleanroom Design

Greater pressures are facing project teams to shorten construction time and to lower costs across the board and at the same time to improve quality and reliability. Cleanroom improvements are realized according to how project teams deal with the following trends: cleanroompeople (31K)

Cost constraints require older buildings to be reused for newer technologies. Criteria not envisioned five years ago are now commonplace. Can renovated structural frames meet tomorrow's vibration criteria and be adequate for process support?

Reducing the volume of contamination controlled spaces should reduce construction and operational costs, yet process tools are requiring higher ceiling heights and greater footprints.

Cleanrooms in the USA traditionally have been flexible to accommodate changing processes. Dedicated processes are less expensive to build, but will we forego flexibility?

Less design-construct time places higher risks on professionals. Yet society continues to be more litigious against professionals.

More complicated production processes need greater specialization in tools and equipment. More specialization requires greater lead times and higher costs.

As specialized, advanced work environments, cleanrooms integrate facility technologies with process technologies more than any other building type. Architecture, Engineering and Construction are synthesized with Operations, Processes and Life Safety, creating a complex and sensitive production or research environment.

Recently, the International Standards Organization published standards for particulate control that will replace the Federal Standard 209E. These will be the recommended practices for contamination control in the design and operation of facilities, equipment and work procedures.

Class 0.1m 0.2m 0.3m 0.5m 1m 5m
IS0 1 10 2
IS0 2 100 24 10 4
IS0 3 1,000 237 102 35 8
IS0 4 10,000 2,370 1,020 352 83
IS0 5 100,000 23,700 10,200 3,520 832 29
IS0 6 1,000,000 237,000 102,000 35,200 8,320 290
IS0 7 352,000 83,200 2,930
IS0 8 3,520,000 832,000 29,300
IS0 9 35,200,000 8,320,000 293,000

Cleanrooms Renovation

As new technologies outstrip the capacities of yesterday's cleanrooms, many corporations and institutions are faced with renovating existing cleanrooms while maintaining some type of on-going operations.

Two of the greatest problems with cleanroom renovations are those that deal with space and people. Typically, when planning a new contamination controlled space, insufficient attention is given to the amount of support space and clean construction space required.

Maintaining clean protocols is critical. People have the tendency to become lax when construction disrupts their daily routines.

Below is a listing of important issues for renovations:people (13K)

  • Working with existing operations
  • Equipment ordering and delivery
  • Availability of User Group personnel
  • Higher unit costs
  • Accuracy of existing drawings
  • Building code modifications
  • Restricted site mobilization
  • Inconveniences to personnel
  • Providing adequate storage areas

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