Quality Engineered Structures Electrical Image 1

Cleanroom Electrical Systems
Gasketed Lighting, Proximity Switches, Modular Electrical Systems

Quality Engineered Structures Electrical Image 2 Cleanroom electrical systems, depending on process, can require multiple voltage, and high amperage power supplies to operate cleanroom environmental and process equipment. Increased demand on existing commercial building electrical systems can require an increase in electrical capacity from the utility provider. Electrical wiring systems must be professionally engineered to meet requirements for safety, environmental equipment, process equipment, and energy efficiency. Specialized processing equipment may require high voltage dedicated circuits to operate correctly.

The following items should be taken into consideration when designing the cleanroom electrical system.

Cleanroom Electrical Devices:
  • Cleanroom Air Handling Systems require specialized electrical engineering to operate high voltage motors, compressors, variable speed drive units, and desiccant systems. Typically the largest power consuming system they require an energy analysis be performed on existing building systems to be integrated as efficiently as possible. Many cleanroom processes will dictate dedicated air handling systems for the cleanroom environment since typical commercial air handling system will not be capable of the increased capacities for pressurization, air change, temperature, and relative humidity tolerances.

  • Cleanroom Lighting Systems require the use of specialized cleanroom lighting fixtures with fully gasketed and sealed housings. Sealed housings maintain the integrity of the ceiling system and prevent infiltration of particulate or microbial contamination. Flow through units are available for use with HEPA filtration modules and rely on the HEPA filtration module for the sealed housing. Cleanroom light fixture lenses should be of a smooth white design on the outside to facilitate cleaning and avoid particulate entrapment issues. Large cleanrooms should consider the use of 277v fixtures for greater sustainability.

  • Cleanroom Light Switches and Outlets should be of a flush style design with gasketed covers. Antimicrobial coating are available in cleanrooms where touch surfaces may require or benefit from their usage. Electrical conduits and raceways can be a significant source of particulate intrusion in negatively pressurized cleanroom zones and should be installed with the correct fittings and gaskets to prevent cross contamination.

  • Cleanroom Ionization Systems whether duct mounted or ceiling mounted may assist in controlling electrostatic discharge and microbial bioburden in cleanroom environments. Air ionization in a clean room environment became mandatory, in the disk drives industry and is likely to be the same in the semiconductor and flat panel industry in the near future. The utilization of cleanrooms is also expanding to new areas such as pharmaceutical, biological, genetic, and food industries. That is why it is necessary to take into account wider aspects of air ionization in a cleanroom environment. Air ionization may provide a multisided effect on cleanroom personnel, as well as the technological process and environment

  • Cleanroom Modular Electrical Systems labor savings cam be up to 75% less than traditional hardwiring. Modular wiring systems are easily relocatable, scalable and facilitate relocation of utilization equipment. comprehensive plug-and-play modular wiring solution from the lighting panel to the light fixtures, power receptacles and other utilization equipment. Power poles, illuminated signage, multi-outlet assemblies and power channels for delivery of data and power as needed. The benefits of modular wiring solutions are more critical in today‚Äôs fast-paced construction, since staying on schedule and budget is tougher than ever. Every job demands wiring solutions that reduce installation time and adapt easily to design changes that occur during and after initial construction. Due to rising labor costs and shortage of qualified and experienced electricians, traditional wiring methods no longer measure up.

Successful cleanroom electrical design dictates that all pertinent information be included in the cleanroom basis of Design(BoD). Operational cost of the cleanroom environment will be of the largest repeating expenses that can have an impact on profitability. Designs focusing on initial cost can be detrimental to sustainability and energy efficiency of the cleanroom environment.

More...Next Article