about the Cleanroom software engineering methodology Cleanroom Software Engineering the meaning of Cleanroom ... thumb right Cleanroom used for the production of microsystems. The yellow lighting is necessary for photolithography .... 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 Image Cleanroom Cabin.JPG thumb 180px upright Cleanroom cabin for precision measuring tools A cleanroom is an environment, typically used in manufacturing or scientific research ... aerosol particles and chemical vapors. More accurately, a cleanroom has a controlled level of contamination ... to an ISO 9 cleanroom, while an ISO 1 cleanroom allows no particles in that size range and only 12 particles ... be very large. Entire manufacturing facilities can be contained within a cleanroom with factory floors ... to environmental contamination. The air entering a cleanroom from outside is filter air filter ed to exclude ... protective clothing such as hats, face masks, gloves, boots and coveralls. Equipment inside the cleanroom .... Cleanroom furniture is also designed to produce a minimum of particles and to be easy to clean. Common ... leaks out of the chamber instead of unfiltered air coming in. Some cleanroom HVAC systems control ... safety always takes precedence . Entering a cleanroom usually requires wearing a cleanroom suit ... to the cleanroom may not have an air shower. There is an anteroom known as a gray room , in which the special ... some cleanroom practices together to maintain their cleanliness requirements. ref http yourcleanroomsupplier.com news.php?newsgrab 35 Your Cleanroom Supplier Hutchins & Hutchins, Inc Bot generated title ref ref http www.cleanroomforum.com Cleanroom Forum Bot generated title ref Cleanroom air flow ... pattern for Turbulent Cleanroom Image Laminar Flow Reinraum.png thumb none Air flow pattern for Laminar Flow Cleanroom Cleanrooms maintain particulate free air through the use of either HEPA or ULPA ... 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 citation needed date November 2010 , 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 work shoes, and rubber booties. The wrists and ankles are taped down with masking tape. Occasionally a plastic raincoat is also worn. Removal of the garments into several barrels is a complicated process which must be performed in an exact sequence. Often a health physics health physicist is present in the work ... chewing are not allowed in any part of the lab. Full cleanroom attire must always be worn while in the cleanroom. Be discreet in coughing, sneezing, or blowing your nose. If you can, go into the service ... cleanroom.byu.edu procedures.phtml Clean Room Procedures ref references DEFAULTSORT Cleanroom Suit ... more details
For the meaning of Cleanroom engineering as a method to avoid copyright infringement Clean room 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 ... 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.realtime ... The basic principles of the Cleanroom process are Software development based on formal methods Cleanroom development makes use of the Box Structure Method to specify and design a software product .... Incremental implementation under statistical quality control Cleanroom development uses an iterative ... sound Software testing testing Software testing in the Cleanroom process is carried out as a statistical ... C. Linger 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 ... soft eng stub fi Cleanroom ja pl Cleanroom pt Cleanroom ... more details
Image Cleanroom air shower.jpg thumb right 200px Cleanroom air shower with blue floor tacky 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. 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 ... 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
Summary Spectrum of yellow fluorescent lights in a cleanroom. Spectrum taken by me using an Ocean Optics HR2000 spectrometer http www.oceanoptics.com . This spectrum is not calibrated for intensity. svg graph Licensing GFDL self with disclaimers migration relicense ... more details
and medical technology The following factors may be responsible for contamination The cleanroom itself ... production environment. External links http www.tested device.com Cleanroom Suitable Equipment Database http www.ipa csm.com Cleanroom Suitable Materials Database References references Category Cleaning ... more details
Air shower can refer to the following terms In physics an Air shower physics air shower is the shower of particles produced in Earth s atmosphere when a high energy cosmic ray hits an atom high in the atmosphere. An air shower room air shower is a specialized antechamber of a cleanroom. disambig ... 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 i4a pages index.cfm?pageid 3322 ISO 14644 4 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 DEFAULTSORT Iso 14644 4 Category ISO standards 14644 4 yo ISO 14644 4 ... 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 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 year Last updated 2007 12 03 url http www.iest.org i4a pages index.cfm?pageid 3322 ISO 14644 2 accessdate 2008 01 17 ref This part of ISO 14644 Standards 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 standards 14644 2 yo ISO 14644 2 ... 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
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
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. History Originally called A2C2 , the first issue was published in January 1998. Currently, the magazine has more than 22,000 subscribers. Citation needed date April 2009 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 te ... 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 i4a pages index.cfm?pageid 3322 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 DEFAULTSORT Iso 14644 5 Category ISO standards 14644 5 yo ISO 14644 5 ... more details
that incorporates contamination control into its standards protocol is the cleanroom . There are many preventative procedures in place within the cleanroom environment. Procedures include subjecting cleanroom staff to strict clothing regulations, and there is often a gowning room where the staff can ... environment. Certain areas in the cleanroom have more stringent measures than others. Places ... control measures in order to keep to the cleanroom standards. Contamination control is also an important ..., cleanroom suit s and face mask s are basic forms of contamination control. Apart from people ... and cleanroom suits are used. HEPA filtration systems used in the medical sector incorporate high ... that are viable. Studies by 3M show that over 80 of contamination enters the cleanroom through ... needs to be peeled and is often not as supple. ref http www.cleanroomforum.com Cleanroom and contamination .... ref http www.cleanroom technology.co.uk story.asp?storyCode 10563 Cleanroom Technology Current ... damaging stickiness . See also Cleanroom HEPA Decontamination References reflist http www.iest.org ... 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 Kavli foundation. The Kavli Institute of Nanoscience at Delft University of Technology consists of seven research groups 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 www.ns.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
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
environment. A common controlled environment aerosol particle counters are used is a cleanroom . Cleanrooms ... 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 ... the most widely referenced standard in the world. FED STD 209E US FED STD 209E cleanroom standards class ... feet or cubic meters. The particle counts are always listed as cumulative. ISO 14644 1 cleanroom ... right 293,000 Cleanroom class comparison class wikitable align center ISO 14644 1 align center FED ... inside a cleanroom or Minienvironment to continuously monitor particle levels 24 hours day seven days ... of other particle counters and other types of sensors to monitoring the overall cleanroom performance ... inside the cleanroom have exceeded predetermined environmental limits. Remote particle counters ... locations inside a cleanroom. Typically less expensive then utilizing remote particle counters, however .... However longer sample times may be required when doing cleanroom certification and testing ... more details
in the concentration of the test liquid on a surface due to drying in the real cleanroom environment .... External links http www.tested device.com Cleanroom Suitable Equipment Database http www.ipa csm.com Cleanroom Suitable Materials Database References references Category Paints ... more details
Pioneer 3 NASA Center Jet Propulsion Laboratory br Image 314 3944b br Date 01 01 1961 Title br Pioneer III Probe br Full Description br Looking more like surgeons, these technicians wearing cleanroom attire inspect the Pioneer III probe before shipping it to Cape Canaveral, Florida. Pioneer III was launched on December 6, 1958 aboard a Juno II rocket at the Atlantic Missile Range, Cape Canaveral, Florida. The mission objectives were to measure the radiation intensity of the Van Allen radiation belt, test long range communication systems, the launch vehicle and other subsystems. The Juno II failed to reach proper orbital escape velocity. The probe re entered the Earth s atmosphere on December 7th ending its brief mission. br Keywords br Pioneer III Jet Propulsion Laboratory JPL br Subject Category br Space Probes, Planet Earth, br Reference Numbers Center JPL Center Number 314 3944b GRIN DataBase Number GPN 2000 001987 Source Information Creator Photographer Unknown Original Source digital PD NASA ... more details
Encyclopedia
top
