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  2. Fan filter unit - Wikipedia

    en.wikipedia.org/wiki/Fan_filter_unit

    Depending on the cleanliness requirements of the controlled space, more fan filter units can be added to the grid in order to meet ISO standards for airflow velocity and air changes per hour. [ 4 ] FFUs can be used in place of a more conventional recirculating air unit such as a ducted or plenum air system.

  3. Cleanroom - Wikipedia

    en.wikipedia.org/wiki/Cleanroom

    A cleanroom or clean room is an engineered space that maintains a very low concentration of airborne particulates. It is well isolated, well controlled from contamination , and actively cleansed. Such rooms are commonly needed for scientific research and in industrial production for all nanoscale processes, such as semiconductor manufacturing.

  4. Cleanliness suitability - Wikipedia

    en.wikipedia.org/wiki/Cleanliness_suitability

    Cleanliness suitability describes the suitability of operating materials and ventilation and air conditioning components for use in cleanrooms where the air cleanliness and other parameters are controlled by way of technical regulations.

  5. ISO 14644 - Wikipedia

    en.wikipedia.org/wiki/ISO_14644

    Requirements for materials used in the cleanroom [10] Maintaining the cleanroom environment in a clean, usable condition conforming to design standards. [10] This part was published as an International Standard in 2004. The document was submitted as an American National Standard and has been adopted as ANSI/IEST/ISO 14644-5:2004 in the United ...

  6. Electrical equipment in hazardous areas - Wikipedia

    en.wikipedia.org/wiki/Electrical_equipment_in...

    Several protection strategies exist. The simplest is to minimize the amount of electrical equipment installed in a hazardous location, either by keeping the equipment out of the area altogether, or by making the area less hazardous (for example, by process changes, or ventilation with clean air).

  7. Electrical room - Wikipedia

    en.wikipedia.org/wiki/Electrical_room

    An electrical room is a technical room or space in a building dedicated to electrical equipment. Its size is usually proportional to the size of the building; large buildings may have a main electrical room and subsidiary electrical rooms. Electrical equipment may be for power distribution equipment, or for communications equipment. [1]

  8. Clean-room design - Wikipedia

    en.wikipedia.org/wiki/Clean-room_design

    Although the clean-room approach had been used as preventative measure in view of possible litigation before (e.g. in the Phoenix BIOS case), the NEC v. Intel case was the first time that the clean-room argument was accepted in a US court trial. A related aspect worth mentioning here is that NEC did have a license for Intel's patents governing ...

  9. Earthing system - Wikipedia

    en.wikipedia.org/wiki/Earthing_system

    Laboratory rooms, medical facilities, construction sites, repair workshops, mobile electrical installations, and other environments that are supplied via engine-generators where there is an increased risk of insulation faults, often use an IT earthing arrangement supplied from isolation transformers.

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