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2009 Sayano-Shushenskaya Power Station Accident
On 17 August 2009, a turbine at the hydroelectric power station of the Sayano-Shushenskaya Dam near Sayanogorsk in Russia failed catastrophically, flooding the turbine hall and killing 75 people. A section of the roof of the turbine hall collapsed; all but one of the ten turbines were damaged or destroyed. The entire plant output, totalling 6,400 megawatts (MW) – a significant portion of the supply to the local area – was lost, leading to widespread power outages. An official report on the accident was released in October 2009. Background The Sayano-Shushenskaya Dam is located on the Yenisey River in south-central Siberia, Russia, about south of Sayanogorsk, Khakassia. Before the accident, it was the largest hydroelectric power station in Russia and the sixth-largest in the world by average power generation. On 2 July 2009, RusHydro, the power station's operator, announced the station's all-time highest electricity output in 24 hours. Turbine 2 Turbines of the type u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krasnoyarsk Summer Time
Krasnoyarsk Time (KRAT) is the time zone seven hours ahead of UTC ( UTC+07:00) and 4 hours ahead of Moscow Time (MSK+4). KRAT is the official time zone for central and east Siberian regions of Krasnoyarsk Krai, Kemerovo Oblast, Khakassia and Tuva. Novosibirsk Oblast used this time zone until 1993, when it was known as ''Novosibirsk Time'' (NOVT/NOVST). The Russian government renamed the time zone shortly after Novosibirsk opted for another time zone instead. Between 27 March 2011 and 25 October 2014, Krasnoyarsk Time was fixed at UTC+08:00. In 2016, the Altai Republic, Altai Krai, Novosibirsk Oblast, and Tomsk Oblast, switched to Krasnoyarsk Time from Omsk Time. IANA time zone database The IANA time zone database The tz database is a collaborative compilation of information about the world's time zones, primarily intended for use with computer programs and operating systems. Paul Eggert is its current editor and maintainer, with the organizational backi ... identifier i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Izvestia
''Izvestia'' ( rus, Известия, p=ɪzˈvʲesʲtʲɪjə, "The News") is a daily broadsheet newspaper in Russia. Founded in 1917, it was a newspaper of record in the Soviet Union until the Soviet Union's dissolution in 1991, and describes itself now as a "national newspaper" of Russia. The word ''izvestiya'' in Russian means "bring news" or "tidings", "herald" (an official messenger bringing news), derived from the verb ''izveshchat'' ("to inform", "to notify"). Origin The newspaper began as the ''News of the Petrograd Soviet of Workers Deputies'' on in Petrograd. Initially, the paper expressed Menshevik and Socialist-Revolutionary Party views. In August 1917, it took the title ''News of the Central Executive Committee of the Petrograd Soviet of Workers' and Soldiers' Deputies''. By October 1917 it became ''News of the Central Executive Committee of the Soviets of Working and Military Deputies'', and was eventually re-titled ''News of the Soviets of People's Deputies'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatigue (material)
In materials science, fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Once a fatigue crack has initiated, it grows a small amount with each loading cycle, typically producing striations on some parts of the fracture surface. The crack will continue to grow until it reaches a critical size, which occurs when the stress intensity factor of the crack exceeds the fracture toughness of the material, producing rapid propagation and typically complete fracture of the structure. Fatigue has traditionally been associated with the failure of metal components which led to the term metal fatigue. In the nineteenth century, the sudden failing of metal railway axles was thought to be caused by the metal ''crystallising'' because of the brittle appearance of the fracture surface, but this has since been disproved. Most materials, such as composites, plastics and ceramics, seem to experience some sort of fatigue-related failure. To aid in predicting t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rostekhnadzor
The Federal Service for Environmental, Technological and Nuclear Supervision (Rostekhnadzor; russian: Федеральная служба по экологическому, технологическому и атомному надзору (Ростехнадзор)) is the supervisory body of the Government of Russia on ecological, technological, and nuclear issues. Its functions include the passage of regulatory legal acts, supervision and oversight in the field of environmental protection, limiting harmful technogenic impact (including the handling of industrial and consumer waste), safety when working with the subsoil (e.g., mining), protection of the subsoil, industrial safety, atomic energy safety (not including the development, preparation, testing, operation and use of nuclear weapons and military atomic facilities), the safety of electrical and thermal facilities and networks (except for household facilities and networks), the safety of hydraulic structures at industr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RIA Novosti
RIA Novosti (russian: РИА Новости), sometimes referred to as RIAN () or RIA (russian: РИА, label=none) is a Russian state-owned domestic news agency. On 9 December 2013 by a decree of Vladimir Putin it was liquidated and its assets and workforce were transferred to the newly created Rossiya Segodnya agency. On 8 April 2014 RIA Novosti was registered as part of the new agency. RIA Novosti is headquartered in Moscow. The chief editor is Anna Gavrilova. Content RIA Novosti was scheduled to be closed down in 2014; starting in March 2014, staff were informed that they had the option of transferring their contracts to Rossiya Segodnya or sign a redundancy contract. On 10 November 2014, Rossiya Segodnya launched the Sputnik multimedia platform as the international replacement of RIA Novosti and Voice of Russia. Within Russia itself, however, Rossiya Segodnya continues to operate its Russian language news service under the name RIA Novosti with its ria.ru website. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kommersant
''Kommersant'' (russian: Коммерсантъ, , ''The Businessman'' or Commerce Man, often shortened to Ъ) is a nationally distributed daily newspaper published in Russia mostly devoted to politics and business. The TNS Media and NRS Russia certified July 2013 circulation of the daily was 120,000–130,000. It is owned by Alisher Usmanov. History In 1989, with the onset of press freedom in Russia, ''Kommersant'' was founded under the ownership of businessman and publicist Vladimir Yakovlev. The first issue was released in January 1990. It was modeled after Western business journalism. The newspaper's title is spelled in Russian with a terminal hard sign (ъ) – a letter that is silent at the end of a word in modern Russian, and was thus largely abolished by the post-revolution Russian spelling reform, in reference to a pre-Soviet newspaper of the same name active between 1909 and 1917. This is played up in the Kommersant logo, which features a script hard sign at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information Telegraph Agency Of Russia
The Russian News Agency TASS (russian: Информацио́нное аге́нтство Росси́и ТАСС, translit=Informatsionnoye agentstvo Rossii, or Information agency of Russia), abbreviated TASS (russian: ТАСС, label=none), is a major Russian state-owned news agency founded in 1904. TASS is the largest Russian news agency and one of the largest news agencies worldwide. TASS is registered as a Federal State Unitary Enterprise, owned by the Government of Russia. Headquartered in Moscow, TASS has 70 offices in Russia and in the Commonwealth of Independent States (CIS), as well as 68 bureaus around the world. In Soviet times, it was named the Telegraph Agency of the Soviet Union (russian: Телегра́фное аге́нтство Сове́тского Сою́за, translit=Telegrafnoye agentstvo Sovetskogo Soyuza, label=none) and was the central agency for news collection and distribution for all Soviet newspapers, radio and television stations. After ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spillway
A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure that water does not damage parts of the structure not designed to convey water. Spillways can include floodgates and fuse plugs to regulate water flow and reservoir level. Such features enable a spillway to regulate downstream flow—by releasing water in a controlled manner before the reservoir is full, operators can prevent an unacceptably large release later. Other uses of the term "spillway" include bypasses of dams and outlets of channels used during high water, and outlet channels carved through natural dams such as moraines. Water normally flows over a spillway only during flood periods, when the reservoir has reached its capacity and water continues entering faster than it can be released. In contrast, an intake tower is a structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Generator
In electricity generation, a generator is a device that converts motive power (mechanical energy) or fuel-based power (chemical energy) into electric power for use in an external circuit. Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines, wind turbines and even hand cranks. The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday. Generators provide nearly all of the power for electric power grids. In addition to electromechanical designs, photovoltaic and fuel cell powered generators utilize solar power and hydrogen-based fuels, respectively, to generate electrical output. The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities. Many motors can be mechanically driven to generate electricity; frequently they make acceptable manual generators. Terminology Electromagnetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-called compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust (known as exhaust gas recirculation (EGR)). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is une ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Jack
A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be performed. Jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons). Industrial jacks can be rated for many tons of load. Etymology The personal name ''Jack'', which came into English usage around the thirteenth century as a nickname form of ''John'', came in the sixteenth century to be used as a colloquial word for 'a man (of low status)' (much as in the modern usage 'jack of all trades, master of none'). From here, the word was 'applied to things which in some way take the place of a lad or man, or save human labour'. The first attestation in the ''Oxford English Dictionary'' of ''jack'' in the sense 'a machine, usually portable, for lifting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gate (hydraulic Engineering)
In hydraulic engineering, a gate is a rotating or sliding structure, supported by hinges or by a rotating horizontal or vertical axis, that can be located at an extreme of a large pipe or canal in order to control the flow of water or any fluid from one side to the other. It is usually placed at the mouth of irrigation channels to avoid water loss or at the end of drainage channels to elude water entrance. Gate Valve When using a gate, one thing that is used in certain applications such as manufacturing, mining, and others is the gate valve. Fluids will run through the valve to help lubricate the moving parts of a machine, transmit power, close off openings to moving parts, and to assist evaporating the amount of heat coming through. These fluids will flow throughout the gate valve with little resistance to flow and there is additionally small drops in pressure. Within the gate valve, there is a gatelike disk that moves up and down perpendicular to the path of flow and seats agai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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