VVPThe Main Live Steam (VVP) circuit includes four lines. Each carries the steam produced by a steam generator out of the reactor building to the engine room where the turbine is located. Each line is protected against overpressure by 7 safety valves called VVP valves.The main steam system(VVP) support of nuclear power plant protects the main pipe by welding the guard plate on the main pipe. Representation schematic!du Circuit Primaire Principal fCSPi l. es 'ignes VvP fen vertj qui ne tespecleni pas les rs iterFfB de r an ltd qua lire duj: In rven t perm e Hre ilex :: lire- ltd risquH da rupture....

Functions Operations performed on VVP nozzles: • An initial cutting operation on the upper part of the steam generator dome. • Beveling operation on the remaining piping. • Beveling operation on each end of the steam generator dome. Cutting and beveling operations performed on ARE nozzles: • An initial cutting operation at ZM1 level (chips must not enter the nozzles following cutting. • Beveling operation on the remaining tubes. Operation-Constraints • Material to be cut : steel TU48C • Wall thickness: from 35 mm to 100 mm (1.38” to 4”) • Reduced tolerances on machining • Machining operations...

Orbital Machining and Cutting Equipment of VVP and Pipes on SG1300Functions • Design: compact and sturdy components. • Various accessories are available to meet each configuration. • Equipment has proven reliability over several decades. The machines are equipped with: • Copying carriage axial stroke 100 mm (4”) and radial stroke 50 mm (2”). • Counterboring / copying carriage stroke 100 mm (4”). • Remotely controlled electrical clutch lever. • Motor block with right angle. Packing or Packaging In order to meet the requirements of the nuclear industry, the machine’s accessories are packed into...

PROTEM and the Nuclear Industry For more than 50 years serving the nuclear industry throughout the world Over the past 50 years, PROTEM has developed more than 3,500 special machines which have been implemented in the construction of new power plants, maintenance and repair of tubular components, flanges, valves, large components. PROTEM has also designed numerous equipment which enabled the dismantling of components including the vessels internals and the vessels themselves. Whatever the type of reactor, PROTEM will offer you a suitable solution to carry out your work To intervene within the...

Pictures, drawings and technical information are not contractual and are subject to changes without prior information 6

Pictures, drawings and technical information are not contractual and are subject to changes without prior information

Nuclear Power in the World Today • • • • • The first commercial nuclear power stations started operation in the 1950s. Nuclear energy now provides about 10% of the world‘s electricity from about 440 power reactors. Nuclear provides about one-quarter of the world’s low-carbon electricity. Nuclear is the world‘s second largest source of low-carbon power (26% of the total in 2020). Over 50 countries utilize nuclear energy in about 220 research reactors. In addition to research, these reactors are used for the production of medical and industrial isotopes, as well as for training. 61 REACTORS UNDER...

Protem & Serco Innovative Solutions for the Nuclear Industry About 120 power reactors with a total gross capacity of about 117 GWe are planned, and over 300 more are proposed*. Most reactors currently planned are in countries in Asia, characterized by fastgrowing economies and rapidly-rising electricity demand. Pictures, drawings and technical information are not contractual and are subject to changes without prior information

Nuclear Technology Nuclear technology uses the energy released by the splitting of atoms of certain elements. This process was first developed in the 1940s, and during World War II the goal of research was to be able to produce bombs. It was from 1950 that nuclear fission was considered more for peaceful purposes in order to produce electricity. Today, thanks to regional transport networks, many countries partly depend on nuclear energy, particularly in Europe. Thus, as early as the 1960s, certain countries decided to launch their nuclear programs. Let us remember that at the time, “political”...

Nuclear Technology The containment building is a gas-tight (shell) or other enclosure around a nuclear reactor and a primary circuit. The Containment is the most characteristic structure of a nuclear power plant. Practically all nuclear power plants built during the last few decades include a containment building. The containment building should be designed to ensure or contribute to the achievement of the following safety functions: • Confinement. Confinement of radioactive material in operational states and accident conditions. • Protection. Protection of the power plant against external natural...

Nuclear Technology Primary circuit: to extract heat In the reactor, the fission of uranium or plutonium nuclei produces a large amount of energy in the form of heat. This heat increases the temperature of the water in the primary circuit which circulates around the reactor core, to 320°C. The water is kept under pressure to prevent it from boiling. This closed circuit is called primary circuit. Secondary circuit: to produce steam The primary circuit exchanges heat with a second closed circuit, called the secondary circuit, in a steam generator. In this steam generator, the hot water from the...

Nuclear TechnologyPrimary circuit Etoictor Secondary circuit| Primary firruil 9 S^cnfutjfy CJrcull "I farl-ary circull CwMJQl «(Ni? * rurtarw Elactnc __ Generator CTtr de" ser RfljLtdr CrmriJCJl fi Volhinr Cruilfol 5ystrfn 13 Pictures, drawings and technical information are not contractual and are subject to changes without prior information