BS 8568:2013 pdf download – Cleanroom energy – Code of practice for improving energy efficiency in cleanrooms and clean air devices

BS 8568:2013 pdf download – Cleanroom energy – Code of practice for improving energy efficiency in cleanrooms and clean air devices 3Terms and definitions For the purposes of this British Standard, the following terms and definitionsapply. 3.1air handling unit(AHU) unit or plant, comprising fan,filtration, heating, cooling and mixing of fresh airand recirculated air, that delivers conditioned air to a room or facility 3.2clean air device stand-alone equipment for treating and distributing clean air to achieve definedenvironmental conditions [SOURCE: BS EN ISO 14644-6:2007,2.31] NOTE Clean air devices include certain separative devices as defined inBS EN ISO 14644-7, for example, clean air hoods, containment enclosures,gloveboxes,isolators and mini-environments. 3.3cleanroom room in which the concentration of airborne particles is controlled,and which isconstructed and used in a manner to minimize the introduction, generation, andretention of particles inside the room, and in which other relevant parameters,e.g.temperature,humidity and pressure, are controlled as necessary [SOURCE: BS EN lSO 14644-6:2007,2.33] 3.4colony forming units (CFUs) single micro-organism or a single small mass of micro-organisms that whendeposited on a microbiological growth medium grows to form a single visiblecolony that can be counted NOTE One colony forming unit is expressed as 1 CFU.3.5combined heat and power electrical generation by internal combustion engine or gas turbine with thewaste heat from this process being used to generate hot water or steam 3.6controlled environment defined zone in which sources of contamination are controlled by specifiedmeans [SOURCE: BS EN lSO 14644-6:2007,2.45] 3.7critical zone area where the product is exposed to the potential deposition of airbornecontamination 3.8final filter last high efficiency filter in the system before the air enters the cleanroomNOTE This may be in the AHU or it may be a terminal filter (see 3.12). 3.9high efficiency air filter air filter conforming to BS EN 1822(all parts), covering the range of efficientparticulate air filters(EPA):E 10-E 12, high efficiency particulate air filters(HEPA):H 13-H 14 and ultra low penetration air filters (ULPA):U 15-u 17 3.10microbe-carrying particle (MCP) particle on which a micro-organism is carried; it is normally dispersed into roomair by personnel as a skin cell, or fragment of skin cell, on which a skin microbe(s) is carried 3.11 non-unidirectional airflow (non-UDAF) air distribution where the supply air entering the clean zone mixes with theinternal air by means of induction [SOURCE:BS EN ISO 14644-6:2007,2.95]3.12terminal filter high efficiency air filter located at the point where the air enters the cleanroom 3.13tri-generation electrical generation that is integrated with both heat...