Abstract Today‚ many safety-critical applications are controlled by computer software. Therefore effective testing tools are required to provide a high degree of safety and to reduce severe failures to a minimum. The paper examines existing regulating standards in safety-critical systems. By comparing different software testing methods the requirements and challenges in safety-critical software testing are being evaluated. The IEC61508 standard serves as the main regulatory framework for
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Nuclear energy is one of the hottest topics in the fight to a cleaner world. The number of people who believe that nuclear energy is too dangerous and unhealthy for the earth has skyrocketed because of the nuclear accidents that have happened in the past and recently. These protesters may have a lot of evidence and theories about how bad this type of energy can be‚ but the people who have realized that nuclear energy is the way to a cleaner and more “Green” society have proof and facts that overrule
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the supercritical water reactor‚ which provided useful guidance of supercritical water reactor design from engineering purpose. 1. Introduction In the development of next generation nuclear power plant‚ higher efficiency and more compact size of reactor core is important. Among the six next generation nuclear power plant‚ supercritical water-cooled reactor (SCWR) are promising because of their high thermal efficiency (i.e.‚ about 45% vs. about 33% efficiency for current Light Water Reactors‚
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Lecture notes by Prof. A. K. JAIN‚ IIT ROORKEE CHAPTER 13: The Deuteron (Lecture time: 2 Hours) Deuteron is the simplest nuclear system where nuclear forces come into play. It is the “Hydrogen Atom” of nuclear physics. It may also be viewed as the simplest odd-odd nucleus‚ having one proton and one neutron. It exhibits features which require the use of a number of new concepts such as exchange force‚ tensor force etc. Of three possible states of two nucleon system‚ di-neutron‚ di-proton‚ and deuteron
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SAMPLE FOOD SAFETY MANUAL Section 1 Introduction Table of Contents Purpose of this manual 4 How to use this manual 5 At risk persons 5 Definitions 6 Sample policy amendment register 10 Our commitment to food safety 11 Organisation responsibilities and duties 12 The owner will: 12 The manager will: 12 All kitchen staff will: 12 Other staff (eg assistants‚ bartenders‚ waiters‚ cleaners) will: 13 The HACCP team 14 Section 1 Introduction
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Importance of Automobile Safety Many people‚ including college students‚ overlook one of the most important things when buying a new car–safety. It is a known truth that a new car is probably filled with the most up-to-date safety features in the automotive market today. However‚ knowing that the car is “safe” does not mean how safe the car really is because of the safety features it has or the lack of them. Therefore‚ this paper will illustrate the need to examine and research the safety features when a
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The United States is the worlds largest producer of nuclear power‚ accounting for more than 30 percent of the worldwide nuclear generation of electricity. Nuclear power is also among the verge of the most expensive‚ construction on a new power plant in Georgia skyrocketed past the projected expenses by $737 million to nearly $7 billion. In 2012 the approval of the new power plants in Georgia and South Carolina were among the first approved in over 30 years. While these approvals were a major setback
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The chemical reaction that creates nuclear power is known as nuclear fission. When uranium is blasted with fast-moving atoms known as neutrinos‚ they become unstable and split‚ releasing more fast-moving neutrinos and energy in the form of radiation (Redd). When nuclear fission occurs‚ there are byproducts of the fuel known as fission products. Fission products are highly radioactive and will be such
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Food Safety Management In the world every year as a result of food poisoning dies over two million people. During cleanings is performing preventive disinfection‚ disinfection of surfaces which includes premises‚ furniture‚ equipment and utensils‚ crockery‚ air‚ clothing and other items used in the work. From 99.9% of germs can and should get rid by washing and cleaning‚ which is the main part of disinfection procedures. For disinfecting kitchen in the restaurant need to use a line of professional
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on the testing of nuclear weapons . The Limited Test Ban Treaty of 1963‚ which has been signed by more than 120 nations prohibits nuclear explosions in the atmosphere ‚oceans and the space‚ allowing only them underground .The Thresh hold Test Ban Treaty of 1976‚ a bilateral agreement between the US and the USSR‚ prohibits underground tests of nuclear weapons with a yield greater than 150 kilotons. In the present climate of widespread pressure for more effective control of nuclear arms the idea of
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