about the cleanroom software engineering methodology Cleanroom Software Engineering the meaning of clean ... thumb right Cleanroom used for the production of microsystems. The yellow lighting is necessary .... Image Cleanroom outside.jpg thumb right Cleanroom from outside Image Cleanroom entrance.jpg thumb right Entrance to a cleanroom with no air shower Image Cleanroom1.jpg thumb right Cleanroom for microelectronics manufacturing with fan filter unit s installed in the ceiling grid Image Cleanroom Cabin.JPG thumb right Cleanroom cabin for precision measuring tools File Cleanroom Garment2.JPG thumb Typical cleanroom head garment A cleanroom or clean room is an environment, typically used in manufacturing ... microbes , Particulate aerosol particles and chemical vapors. More accurately, a cleanroom has ..., corresponding to an ISO 9 cleanroom, while an ISO 1 cleanroom allows no particles in that size ... can be very large. Entire manufacturing facilities can be contained within a cleanroom with factory ... sensitive to environmental contamination. The air entering a cleanroom from outside is filter air ... inside the cleanroom is designed to generate minimal air contamination. Only special mop s and bucket s are used. Cleanroom furniture is designed to produce a minimum of particles and to be easy to clean ... instead of unfiltered air coming in. Some cleanroom HVAC systems control the humidity ... precedence . Access to a cleanroom is usually restricted to those wearing a cleanroom suit . ref http www.tristate.biz cleanroom services clothing.php Cleanroom Clothing ref In cleanrooms in which the standards of air contamination are less rigorous, the entrance to the cleanroom may not have an air ... facilities do not use fully classified cleanrooms, but use some cleanroom practices to maintain ... Cleanroom Supplier Hutchins & Hutchins, Inc Bot generated title ref ref http www.cleanroomforum.com Cleanroom Forum Bot generated title ref Air flow principles class centered style vertical align top ... more details
Cleanroom suitability describes the suitability of a machine, operating utility, material, etc. for use in a cleanroom , where air cleanliness and other parameters are controlled by way of technical regulations in accordance with ISO 14644 1 ISO 14644 . ref VDI 2083, Part 9.1 Cleanroom Technology Compatibility with required cleanliness and surface cleanliness ref Cleanroom suitability is a subdomain of cleanliness suitability and primarily describes the particle emission behavior of a machine or operating utility test piece . Testing The aim of cleanroom suitability tests is to determine the suitability of machines and operating utilities air conditioning, venting, etc. for use in cleanrooms. The tests must be carried out using measurement techniques as particle emission behavior cannot be adequately assessed by the naked eye or similar means. No metrological tests are required if there are obvious flaws in machines and operating utilities, such as rust or the presence of porous or completely unsuitable materials wood, etc. . Tests to assess the cleanroom suitability of a machine or operating utility using measurement techniques are performed in a cleanroom in order to be certain that the particles detected are emitted from the test piece. The test cleanroom has to be at least one class cleaner that the desired suitability of the test piece, otherwise it would not be possible to relate the particles detected to the test piece in question. An exception to this is when determining ... 1 such tests have to be carried out in a Class 1 cleanroom because no other cleanroom classes are defined which are better than this. The test cleanroom must have a low turbulence airflow often known ... progression and location. The cleanroom suitability of a material describes its particle emission ... 2083, Part 17 Cleanroom Technology Cleanroom and Cleanliness Suitability of Materials. ref External links http www.tested device.com Cleanroom Suitable Equipment Database http www.ipa csm.com Cleanroom ... more details
For White coat Gown disambiguation Refimprove date December 2009 Image Cleanroom suit.jpg thumb 250px Technicians wearing clean room suits inspect a Wafer electronics semiconductor wafer A clean room suit , cleanroom suit , or bunny suit , ref name Laboratory Citation title Dynamic Design The Cleanroom url http genesismission.jpl.nasa.gov educate scimodule CleanRoom pdfs SuitingUpST.pdf author NASA Jet Propulsion Laboratory accessdate 2011 05 25 ref ref name PlummerDeal2000 cite book author1 James D. Plummer author2 Michael D. Deal author3 Peter B. Griffin title Silicon VLSI technology fundamentals, practice and modeling url http books.google.com books?id enmdQgAACAAJ accessdate 24 February 2012 date 24 July 2000 publisher Prentice Hall isbn 978 0 13 085037 9 page 158 ref is an overall garment worn in a clean room . One common type is an all in one coverall worn by semiconductor and nanotechnology line production workers, technicians, and process equipment engineers, as well as people in similar roles creating sterile products for the medical device industry. The suit covers the wearer to prevent skin and hair being shed into a clean room environment. The suit may be in one piece or consist of several separate garments worn tightly together. The suit incorporates both boots and hood. It must also incorporate a properly fitted bouffant cap or mob cap . Image Gowning.jpg left thumb 300px Pictorial demonstration of gowning More advanced designs with face covers were introduced in the 1990s like the Intel fab worker style suits seen on the Pentium product advertisements . Suits are usually deposited in a store after being contaminated for dry cleaning, autoclaving and or repair. Similar suits are worn in the Containment building containment areas of nuclear power plant s. These suits consist of the main garment, hood, thin cotton gloves, rubber gloves, plastic bags over normal ... demonstration of de gowning References reflist DEFAULTSORT Cleanroom Suit Category Environmental ... more details
For the meaning of clean room engineering as a method to avoid copyright infringement Cleanroom design Software development process The Cleanroom software engineering process is a software development process intended to produce software with a certifiable level of Reliability engineering reliability . The Cleanroom process was originally developed by Harlan Mills and several of his colleagues including Alan Hevner at IBM ref cite journal last Mills first H. authorlink Harlan Mills coauthors M. Dyer and R. Linger title Cleanroom Software Engineering journal IEEE Software volume 4 issue 5 month September year 1987 pages 19&ndash 25 doi 10.1109 MS.1987.231413 ref . The focus of the Cleanroom process is on defect prevention, rather than defect removal. The name Cleanroom was chosen to evoke the cleanroom s used in the electronics industry to prevent the introduction of defects during the fabrication of semiconductor s. The Cleanroom process first saw use in the mid to late 80s. Demonstration projects within the military began in the early 1990s ref cite web last Foreman first John year 2005 url http www.sei.cmu.edu library abstracts reports 96tr022.cfm title Cleanroom Software Engineering ... 2006 04 27 ref . Recent work on the Cleanroom process has examined fusing Cleanroom with the automated ... into industry using Cleanroom and CSP publisher Dedicated Systems e Magazine url http www.omimo.be ... principles of the Cleanroom process are Software development based on formal methods Cleanroom ... implementation under statistical quality control Cleanroom development uses an iterative approach ... sound Software testing testing Software testing in the Cleanroom process is carried out as a statistical ... and Jesse H. Poore year 1999 title Cleanroom Software Engineering Technology and Process publisher Addison Wesley cite book author Jesse H. Poore and Carmen J. Trammell year 1996 title Cleanroom ... eng stub fi Cleanroom ja pl Cleanroom pt Cleanroom ... more details
Bunny suit refers to A Cleanroom suit for use in cleanrooms An NBC suit An outfit worn by a Playboy Bunny A costume that resembles a rabbit Disambig ja ... more details
and medical technology The following factors may be responsible for contamination The cleanroom itself ... production environment. References references External links http www.tested device.com Cleanroom Suitable Equipment Database http www.ipa csm.com Cleanroom Suitable Materials Database Category Cleaning ... more details
Air shower can refer to the following terms Air shower physics , the shower of particles produced when a high energy cosmic ray hits an atom high in the atmosphere Air shower room , a specialized antechamber of a cleanroom disambig ... more details
Image Cleanroom air shower.jpg thumb right 200px Cleanroom air shower with blue floor sticky mat. The term air shower can refer to the specialized antechamber which is passed through before entering a cleanroom in order to blow off excess dust particles from cleanroom personnel before they enter, to minimize contamination. HEPA filters are generally used to decontaminate a room by filtering out particles greater than 0.3 micrometres in size. This kind of local purifying equipment is located between clean room and unclean room. They are designed to blow air in different directions. Single side shower, double side shower, three side shower and top shower. Spraying wind speed usually goes above 25 m s through stainless steel nozzles. Purpose External links http www.mic4.com articles entry exit.php Cleanroom Entry & Exit Procedures http www.jpl.nasa.gov news features.cfm?feature 551 Air Showers used at NASA Room stub Tech stub Category Filters Category Rooms ja ko ja ... more details
ISO 14644 5, Cleanrooms and associate controlled environments Part 5 Operations , was published as an International Standard in 2004 and is available from Institute of Environmental Sciences and Technology IEST IEST . The document was submitted as an American National Standard and has been adopted as American National Standards Institute ANSI Institute of Environmental Sciences and Technology IEST IEST International Standards Organization ISO 14644 5 2004 in the United States . ref name ISO 146445 cite web title ISO 14644 5 Scope publisher IEST date Last updated 2007 12 03 url http www.iest.org Home ISOStandards ISO14644Standards ISO146445 tabid 10140 Default.aspx accessdate 2008 01 17 ref ISO 14644 5 provides the basic requirements for operating and maintaining cleanrooms and associated controlled environments. This standard addresses requirements that are basic to the operation of all cleanrooms regardless of the application. Topics include ref name ISO 146445 Operational systems that must be in place ref name ISO 146445 Selection and use of appropriate cleanroom garments ref name ISO 146445 Training and monitoring of personnel and activities ref name ISO 146445 Installation and use of equipment ref name ISO 146445 Requirements for materials used in the cleanroom ref name ISO 146445 Maintaining the cleanroom environment in a clean, usable condition conforming to design standards. ref name ISO 146445 See also ISO 14644 standard for Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones References Reflist Related links http www.iest.org http www.ansi.org http www.iso.org ISO standards Category ISO 14644 14644 5 yo ISO 14644 5 ... more details
wiktionarypar gown A gown is a loose outer garment by men and women from the early Middle Ages to the seventeenth century, or any woman s garment consisting of a bodice and attached skirt. Gown may also refer to Evening gown , women s formal attire The Gown , a Belfast based student newspaper Cap and gown Wedding gown Hospital gown Gowning , putting on a cleanroom suit GOWNS , folk noise band from California deleted A7 nn disambig ... more details
Class 1000 may refer to Class 1000 Shinkansen , a class of Japanese trains built in the 1960s NS Class 1000 , a class of Dutch electric locomotives built in the 1940s Korail Class 1000 , a class of South Korean trains built from 1974 to 1996 Midland Railway 1000 Class , a class of British steam locomotives first built in 1902 GWR 1000 Class , a British steam locomotive built in the 1940s Class 1000 standard , a cleanroom standard for air purity dab ... more details
ISO 14644, Cleanrooms and associated controlled environments Part 4 Design, construction and start up, was submitted as an American National Standard in 2001. ref name ISO 146444 cite web title ISO 14644 4 Scope publisher IEST date Last updated 2007 12 03 url http www.iest.org StandardsRPs ISOStandards ISO14644Standards ISO146444 tabid 10139 Default.aspx accessdate 2008 01 17 ref ISO 14644 4 specifies requirements for the design and construction of cleanroom and clean air devices, as well as requirements for start up and qualification, but does not prescribe specific technological nor contractual means to meet the requirements. This document is intended for purchasers , suppliers , and designers of cleanroom installations. ref name ISO 146444 See also ISO 14644 standard for Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones References Reflist Related links http www.iest.org http www.ansi.org http www.iso.org ISO standards Category ISO 14644 14644 4 yo ISO 14644 4 ... more details
Multiple issues orphan December 2010 notability January 2011 Materials and surfaces can give off substances which serve as a food source for microorganism s such as bacteria , algae or Fungus fungi . Microorganisms could accumulate and multiply. However, plastics could not only represent a food source to microorganisms, materials and surfaces may also be altered by the products of metabolism generated by the microorganisms e.g. discoloration . This may affect the service life of materials and enable microorganisms to gain uncontrolled access to critical areas. Especially in the pharmaceutical, food and medical device industry, the growth of microorganism represents a hazard to the end product. The ability of plastics to resist metabolization is therefore an important quality factor which can be assessed in accordance with DIN EN ISO 846. ref ISO 846 Plastics Evaluation of the action of microorganisms ISO 846 1997 German Version EN ISO 846 1997 ref External links http www.tested device.com Cleanroom Suitable Equipment Database http www.ipa csm.com Cleanroom Suitable Materials Database References references Category Metabolism ... more details
Infobox Magazine title Controlled Environments Magazine image file image size image caption editor Patrice Galvin editor title Editor in chief previous editor staff writer frequency Monthly circulation 22,000 category company publisher http www.viconpublishing.com Vicon Publishing, Inc. firstdate January 1998 country United States based language English website http www.cemag.us issn Controlled Environments Magazine is a business to business magazine that provides information on contamination control , detection, and prevention. The magazine is available in both print and online formats and provides information on trends, technology, and applications for professionals working in cleanroom s and similar environments. It is published 11 times a year and covers topics such as pure materials, protective packaging, facility construction, and day to day cleaning and control challenges affecting quality and yield. Monthly columns cover precision and critical cleaning, cleanroom apparel, cleanroom chemicals, regulatory issues, and contamination control. Controlled Environments Magazine also publishes a printed Buyer s Guide annually. The Buyer s Guide is a resource of contamination control vendors, products and services available. Market Controlled Environments Magazine is aimed at contamination control professionals who are responsible for detecting, preventing, and controlling contamination in the clean manufacturing production process, such as engineer s, technician s, and engineer ing support personnel at life science s and advanced microelectronics companies, including Genzyme , Johnson & Johnson , and Bayer Corporation . External links http www.cemag.us Controlled Environment Magazine http www.nanotech now.com news.cgi?story id 33097 www.nanotech now.com news.cgi?story id 33097 Category Science and technology magazines ... more details
that incorporates contamination control into its standards protocol is the cleanroom . There are many preventive procedures in place within a cleanroom environment. They include subjecting cleanroom ... environment. Certain areas in the cleanroom have more stringent measures than others packaging ... in order to maintain cleanroom standards. Contamination control is also an important asset for industrial ..., cleanroom suit s and face mask s are accordingly basic items of contamination control. Apart ..., airlocks and cleanroom suits are used. HEPA filtration systems used in the medical sector incorporate ... of those that are viable. Studies by 3M show that over 80 of its contamination enters the cleanroom .... ref http www.cleanroomforum.com Cleanroom and contamination control forum Bot generated title ref ref ... story.asp?storyCode 10563 Cleanroom Technology Current industry news and reports Bot generated ... products . See also Cleanroom HEPA Decontamination References reflist External links http www.iest.org ... technology.co.uk Cleanroom Technology The Internal Journal of Contamination Control Category ... more details
ISO 14644 2, Cleanrooms and associated controlled environments Part 2 Specifications for testing and monitoring to prove continued compliance with ISO 14644 1 became an International Standard following the cancellation of FED STD 209E. In the United States in 2000 it was adopted as American National Standards Institute ANSI Institute of Environmental Sciences and Technology IEST IEST ISO 14644 2 2000. ref name ISO 146442 cite web title ISO 14644 2 Scope publisher IEST date 2007 12 03 url http www.iest.org Home ISOStandards ISO14644Standards ISO1464422000 tabid 10137 Default.aspx accessdate 2008 01 17 ref This part of ISO 14644 specifies requirements for periodic testing of a cleanroom or clean zone to prove its continued compliance with ISO 14644 1 for the designated classification of airborne particulate cleanliness. It also specifies requirements for the monitoring of a cleanroom or clean zone installation to provide evidence of its continued compliance with ISO 14644 1 for the designated classification of airborne particulate cleanliness. ref name ISO 146442 See also ISO 14644 standard for Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones References Reflist External links http www.iest.org http www.iso.org http www.ansi.org http www.cleanrooms.com ISO standards Category ISO 14644 14644 2 yo ISO 14644 2 ... more details
Unreferenced stub auto yes date December 2009 In computing , a secure environment is any environment system which implements the controlled computer data storage storage and use of information. In the event of computing data loss , a secure environment is used to protect personal and or confidential data. Often, secure environments employ cryptography as a means to protect information. Some secure environments employ Cryptographic hash function cryptographic hashing , simply to verify that the information has not been altered since it was last modified. See also Data recovery Cleanroom Mandatory access control MAC Trusted computing DEFAULTSORT Secure Environment Category Computer security Comp sci stub ... more details
Unreferenced date June 2011 DTU Nanotech before 2008 called MIC DTU is a research institute of micro and nanotechnology at the Technical University of Denmark DTU in Kongens Lyngby, ten kilometers north of Copenhagen. MIC represents a research environment where micro and nanotechnology are applied to a wide range of scientific disciplines, e.g. mechanics, optics, chemistry, and the life sciences. MIC has access to a cleanroom, chemical laboratories, biochemical laboratories, and optical laboratories. MIC is part of the joined nanotechnology and nanoscience efforts at the DTU, known as Nano DTU. Citation needed date June 2011 References and further reading http www.nanotech.dtu.dk English.aspx Homepage of DTU Nanotech coord 55.78154 N 12.5180 E type landmark region DK display title DEFAULTSORT Dtu Nanotech Category Technical University of Denmark ... more details
environment aerosol particle counters are used is a cleanroom . Cleanrooms are used extensively ... have defined particle count limits. Aerosol particle counters are used to test and classify a cleanroom to ensure its performance is up to a specific cleanroom classification standard. Several standards exist for cleanroom classification. The most frequently referred to classification is from the United ... in the world. FED STD 209E US FED STD 209E cleanroom standards class wikitable colspan ... listed as cumulative. ISO 14644 1 cleanroom standards class wikitable colspan 6 align ... align right 35,200,000 align right 8,320,000 align right 293,000 Cleanroom class comparison class ... a fixed location typically inside a cleanroom or Minienvironment to continuously monitor particle ... cleanroom performance. This network of sensors is typically connected to a facility monitoring ... personnel when conditions inside the cleanroom have exceeded predetermined environmental limits ... drawing air from up to 32 locations inside a cleanroom. Typically less expensive then utilizing remote ... for most of the same applications. However longer sample times may be required when doing cleanroom ... International http www.cleanroom technology.co.uk Cleanroom Technology Category Meteorological ... more details
The shelf life of a product can be extended either by adding artificial preservative s or by taking hygienic measures during the manufacturing process . As the consumer trend today is towards preservative free foods with a long shelf life, industry is being forced to rethink its manufacturing methods. Instead of adding preservative agents, increased hygienic precautions can be taken during production. A clean and hygienic manufacturing environment is an essential prerequisite in order to keep contamination related reject rates low. The utilization of surfaces in the manufacturing environment with antibacterial properties can significantly reduce contamination risks. The determination of the antibacterial activity microbicidy of surfaces is described in the following norms ISO 22196 ref ISO 22196 2007 Plastics Measurement of antibacterial activity on plastics surfaces ref and JIS Z 2801 ref JIS Z 2801 2000 Antimicrobial products test for antimicrobial activity and efficacy ref . The Japanese norm JIS Z 2801 was published in 2000 and published again in 2007 as the internationally valid norm ISO 22196. Therefore, ISO 22196 and JIS Z 2801 are identical. In the test, both a surface system coated with sporicide and an identical surface system without an antibacterial coating are charged with selected microorganism s. A once only assessment of the reduction factor is carried out after 24 hours by determining colony counts on the reference surface and on the antibacterial surface. External links http www.tested device.com Cleanroom Suitable Equipment Database http www.ipa csm.com Cleanroom Suitable Materials Database References references DEFAULTSORT Antibacterial Activity Category Food safety ... more details
The Kavli Institute of Nanoscience Delft was established in 2004 at the Department of NanoScience, Faculty of Applied Sciences, Delft University of Technology through a grant by the US based The Kavli Foundation . The Kavli Institute of Nanoscience at Delft University of Technology consists of two departments, Department of Quantum Nanoscience and Department of Bionanoscience, which were created after the Department of NanoScience was split, and a nanofabrication cleanroom facility. With a staff of 25 professors and over 80 PhD and postdoctoral students, the Institute studies new physics and exploits novel principles in nanostructured devices with a new functionality. The nanostructures vary from superconductor s to biopolymer s and are obtained from nature or fabricated with bottom up methods starting with atoms or molecules or top down techniques such as electron beam lithography . External links http kavli.tudelft.nl Homepage of the Kavli Institute of Nanoscience at Delft http www.kavlifoundation.org Homepage of the Kavli Foundation coord missing Netherlands Category Research institutes in the Netherlands Category Nanotechnology institutions Category Delft University of Technology Netherlands stub ... more details
File Cleanroom1.jpg thumb 300px Filter ceiling grid of a cleanroom for microelectronic manufacturing with filter fan units installed A fan filter unit FFU is a of type of air filter ing equipment. It is used to supply purified air to cleanroom s or microenvironments by filtering out harmful airborne particles from recirculating air. The units are installed within the system s ceiling or floor grid. Large cleanrooms require a proportionally large number of FFUs, which in some cases may range from several hundred to several thousand. ref name Kohli2009 Cite book last1 Kohli first1 Rajiv year 2009 title Developments in surface contamination and cleaning particle deposition, control and removal last2 Mittal first2 Kashmiri L. publisher William Andrew isbn 978 1 4377 7830 4 url http books.google.co.uk books?id hQWekw9gF 8C page 164. ref ref cite web url http www.sciencedirect.com science article pii S0360132306001375 title Building and Environment Performance of large fan filter units for cleanroom applications publisher ScienceDirect date accessdate 2011 10 26 ref Units often contain their own pre filter, HEPA filter and internally controllable fan air distribution. ref cite web url http www.bassaire.co.uk pages clean air products fan filter units.php title Fan Filter Units publisher Bassaire.co.uk date accessdate 2011 10 26 ref ref name CleanRooms2007 cite book title CleanRooms url http books.google.co.uk books?id hC4jMEgg3oIC accessdate 26 October 2011 volume 21 date Mar 2007 pages 16 17 issn 10438017 ref FFUs can be used in place of a more conventional recirculating air unit such as a ducted or plenum space plenum air system. FFUs are often used because of height restrictions in the space they are they only systems that work in setups with smaller internal floor dimensions. Additionally when less than 20 filters are involved, a fan powered HEPA, FFU design is generally considered to be less expensive than a more conventional ducted supply system. ref name CleanRooms2008 ... more details
File Reactive Ion Etcher.JPG thumb A commercial reactive ion etching setup in a cleanroom Reactive ion etching RIE is an etching microfabrication etching technology used in microfabrication . It uses chemical reaction chemically reactive plasma physics plasma to remove material deposited on wafer electronics wafer s. The plasma is generated under low pressure vacuum by an electromagnetic field . High energy ion s from the plasma attack the wafer surface and react with it. Equipment A typical parallel plate RIE system consists of a cylindrical vacuum chamber, with a wafer electronics wafer platter situated in the bottom portion of the chamber. The wafer platter is electrically isolated from the rest of the chamber, which is usually ground electricity ground ed. Gas enters through small inlets in the top of the chamber, and exits to the vacuum pump system through the bottom. The types and amount of gas used vary depending upon the etch process for instance, sulfur hexafluoride is commonly used for etching silicon . Gas pressure is typically maintained in a range between a few milli torr and a few hundred millitorr by adjusting gas flow rates and or adjusting an exhaust orifice. Other types of RIE systems exist, including inductively coupled plasma ICP RIE. In this type of system, the plasma is generated with an RF powered magnetic field. Very high plasma densities can be achieved, though etch profiles tend to be more isotropic. A combination of parallel plate and inductively coupled plasma RIE is possible. In this system, the ICP is employed as a high density source of ions which increases the etch rate, whereas a separate RF bias is applied to the substrate silicon wafer to create directional electric fields near the substrate to achieve more anisotropic etch profiles. Method ... Deep RIE Bosch Process Plasma Etcher External links http www.ee.byu.edu cleanroom rie etching.phtml BYU Cleanroom RIE Etching http www.oxfordplasma.de process sibo 1.htm Bosch Process http www.clarycon.com ... more details
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