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Trapped-key Interlocking
Trapped-key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped-key interlocks are widely used to ensure safe access to potentially live or dangerous plant or equipment in an industrial setting. A safe sequence of operations is enabled through transfer of keys that are either trapped or released in a predetermined order. For example, a key is used to isolate a power source (circuit breaker or supply valve), this key is then released and can then be used to gain access through a gate or door to a high risk area by inserting it into an access lock. The key will then remain trapped until the gate or door is closed. A personnel or safety key can be released from the access lock, this ensures that the gate or door can not be closed and the initial key released until this personnel or safety key is returned (assuming that no duplicate keys are available). This provides increased operator safety. In 1893, French invent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trapped Key Interlock Switchgear Door
Trapped may refer to: Films * ''Trapped'' (1931 film), a crime drama short starring Lina Basquette * ''Trapped'' (1937 film), an American western starring Charles Starrett * ''Trapped'' (1949 film), a semidocumentary film noir directed by Richard Fleischer * ''Trapped'' (1973 film), a television film starring James Brolin * ''Trapped'' (1982 film), a horror film starring Henry Silva * ''Trapped'' (1989 film), a television film starring Kathleen Quinlan * ''Trapped'' (2001 film), a television film starring William McNamara * ''Trapped'' (2002 film), a thriller starring Charlize Theron * ''Trapped'' (2013 film), an Iranian drama film * ''Trapped'' (2015 film), an Armenian action thriller starring Sos Janibekyan * ''Trapped'' (2016 American film), an American documentary film * ''Trapped'' (2016 Hindi film), an Indian survival film * ''Trapped!'' (2006), a television film starring Alexandra Paul * '' Trapped: Haitian Nights'', a 2010 thriller starring Vivica A. Fox Literatu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lock (security Device)
A lock is a mechanical or electronic fastening device that is released by a physical object (such as a key, keycard, fingerprint, RFID card, security token or coin), by supplying secret information (such as a number or letter permutation or password), by a combination thereof, or it may only be able to be opened from one side, such as a door chain. A key is a device that is used to operate a lock (to lock or unlock it). A typical key is a small piece of metal consisting of two parts: the ''bit'' or ''blade'', which slides into the keyway of the lock and distinguishes between different keys, and the ''bow'', which is left protruding so that torque can be applied by the user. In its simplest implementation, a key operates one lock or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token for access to the locked area; locks are meant to only allow persons having the correct key to ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Key (lock)
A lock is a mechanics, mechanical or Electronics, electronic fastening device that is released by a physical object (such as a key, Keycard lock, keycard, fingerprint, Radio-frequency identification, RFID card, security token or coin), by supplying secret information (such as a number or letter permutation or password), by a combination thereof, or it may only be able to be opened from one side, such as a door chain. A key is a device that is used to operate a lock (to lock or unlock it). A typical key is a small piece of metal consisting of two parts: the ''Bit (key), bit'' or ''blade'', which slides into the keyhole, keyway of the lock and distinguishes between different keys, and the ''bow'', which is left protruding so that torque can be applied by the user. In its simplest implementation, a key operates one lock or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token for access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Railway System
Rail transport in France is marked by a clear predominance of passenger traffic, driven in particular by high-speed rail. The SNCF, the national State-owned enterprise, state-owned railway company, operates most of the passenger and freight services on the national network managed by its subsidiary SNCF Réseau. France currently operates the second-largest European railway network, with a total of 29,901 kilometres of railway. The Saint-Étienne to Andrézieux Railway, first railway line in the country opened in 1827 from Saint-Étienne to Andrézieux. The network has undergone a major modernization since 1981 with the arrival of the TGV high-speed rail service which has been consistently expanded in subsequent years. In 2017, there were 1.762 billion journeys on the French national rail network, among which 1.270 billion on SNCF services and 493 million on RATP Group, RATP sections of the Réseau Express Régional, RER, the express regional network operating in the Paris area w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halma Plc
Halma plc is a British global group of safety equipment companies that makes products for hazard detection and life protection based in Amersham, England. It is listed on the London Stock Exchange London Stock Exchange (LSE) is a stock exchange in the City of London, England, United Kingdom. , the total market value of all companies trading on LSE was £3.9 trillion. Its current premises are situated in Paternoster Square close to St P ... and is a constituent of the FTSE 100 Index. History The company was established in 1894 in Ceylon as ''The Nahalma Tea Estate Company Limited''. It switched to rubber production in 1937 and became ''The Nahalma Rubber Estate Company Limited''. During the early 1950s the company's rubber estates were nationalised by the Sri Lankan government, and in 1956 the company became ''Halma Investments Limited'', thereby severing its connections with both tea and rubber and becoming an investment and industrial holding company. In the early 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity Generation
Electricity generation is the process of generating electric power from sources of primary energy. For electric utility, utilities in the electric power industry, it is the stage prior to its Electricity delivery, delivery (Electric power transmission, transmission, Electric power distribution, distribution, etc.) to end users or its Grid energy storage, storage (using, for example, the Pumped-storage hydroelectricity, pumped-storage method). Electricity is not freely available in nature, so it must be "produced" (that is, transforming other forms of energy to electricity). Production is carried out in power stations (also called "power plants"). Electricity is most often generated at a power plant by electromechanical electric generator, generators, primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power. There are al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Occupational Safety And Health
Occupational safety and health (OSH), also commonly referred to as occupational health and safety (OHS), occupational health, or occupational safety, is a multidisciplinary field concerned with the safety, health, and welfare of people at work (i.e. in an occupation). These terms also refer to the goals of this field, so their use in the sense of this article was originally an abbreviation of ''occupational safety and health program/department'' etc. The goal of an occupational safety and health program is to foster a safe and healthy occupational environment. OSH also protects all the general public who may be affected by the occupational environment.Fanning, Fred E. (2003). Basic Safety Administration: A Handbook for the New Safety Specialist, Chicago: American Society of Safety Engineers Globally, more than 2.78 million people die annually as a result of workplace-related accidents or diseases, corresponding to one death every fifteen seconds. There are an additional 374 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trapped Key Interlock Transfer Block
Trapped may refer to: Films * ''Trapped'' (1931 film), a crime drama short starring Lina Basquette * ''Trapped'' (1937 film), an American western starring Charles Starrett * ''Trapped'' (1949 film), a semidocumentary film noir directed by Richard Fleischer * ''Trapped'' (1973 film), a television film starring James Brolin * ''Trapped'' (1982 film), a horror film starring Henry Silva * ''Trapped'' (1989 film), a television film starring Kathleen Quinlan * ''Trapped'' (2001 film), a television film starring William McNamara * ''Trapped'' (2002 film), a thriller starring Charlize Theron * ''Trapped'' (2013 film), an Iranian drama film * ''Trapped'' (2015 film), an Armenian action thriller starring Sos Janibekyan * ''Trapped'' (2016 American film), an American documentary film * ''Trapped'' (2016 Hindi film), an Indian survival film * ''Trapped!'' (2006), a television film starring Alexandra Paul * '' Trapped: Haitian Nights'', a 2010 thriller starring Vivica A. Fox Literatu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiln
A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay into pottery, tiles and bricks. Various industries use rotary kilns for pyroprocessing—to calcinate ores, to calcinate limestone to lime for cement, and to transform many other materials. Pronunciation and etymology According to the Oxford English Dictionary, kiln was derived from the words cyline, cylene, cyln(e) in Old English, in turn derived from Latin ''culina'' ("kitchen"). In Middle English the word is attested as kulne, kyllne, kilne, kiln, kylle, kyll, kil, kill, keele, kiele. For over 600 years, the final "n" in kiln was silent. It wasn't until the late 20th century where the "n" began to be pronounced. This is due to a phenomenon known as spelling pronunciation, where the pronunciation of a word is surmised from its spelling an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interlock
An interlock is a feature that makes the state of two mechanisms or functions mutually dependent. It may be used to prevent undesired states in a finite-state machine, and may consist of any electrical, electronic, or mechanical devices or systems. In most applications, an interlock is used to help prevent a machine from harming its operator or damaging itself by preventing one element from changing state due to the state of another element, and vice versa. Elevators are equipped with an interlock that prevents the moving elevator from opening its doors, and prevents the stationary elevator (with open doors) from moving. Interlocks may include sophisticated elements such as curtains of infrared beams, photodetectors, a computer containing an interlocking computer program, digital or analogue electronics, or simple switches and locks. Trapped-key interlocking Trapped-key interlocking is a method of ensuring safety in industrial environments by forcing the operator through a prede ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poka-yoke
is a Japanese term that means "mistake-proofing" or "inadvertent error prevention". A poka-yoke is any mechanism in a process that helps an equipment operator avoid (''yokeru'') mistakes (''poka'') and defects by preventing, correcting, or drawing attention to human errors as they occur. The concept was formalized, and the term adopted, by Shigeo Shingo as part of the Toyota Production System. Etymology Poka-yoke was originally '' baka-yoke'', but as this means "fool-proofing" (or " idiot-proofing") the name was changed to the milder ''poka-yoke''. Poka-yoke is derived from ''poka o yokeru'' (ポカを避ける), a term in shogi that means avoiding an unthinkably bad move. Usage More broadly, the term can refer to any behavior-shaping constraint designed into a process to prevent incorrect operation by the user. A simple poka-yoke example is demonstrated when a driver of the car equipped with a manual gearbox must press on the clutch pedal (a process step, therefore a poka-yoke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Engineering
Safety engineering is an engineering discipline which assures that engineered systems provide acceptable levels of safety. It is strongly related to industrial engineering/systems engineering, and the subset system safety engineering. Safety engineering assures that a life-critical system behaves as needed, even when components fail. Analysis techniques Analysis techniques can be split into two categories: qualitative and quantitative methods. Both approaches share the goal of finding causal dependencies between a hazard on system level and failures of individual components. Qualitative approaches focus on the question "What must go wrong, such that a system hazard may occur?", while quantitative methods aim at providing estimations about probabilities, rates and/or severity of consequences. The complexity of the technical systems such as Improvements of Design and Materials, Planned Inspections, Fool-proof design, and Backup Redundancy decreases risk and increases the cost. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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