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NUCLEAR APPLICATIONS OF ELECTRON BEAM WELDING
Electron beam has been applied to the fabrication of fuel elements for pressurised water reactors and the distinct advantages are:Vacuum environment prevents contamination of the weld joint and ensures that the weld metal possesses good corrosion resistance & mechanical properties. High concentration of weld heat, the concentration of thermal energy is an important advantage of EBW of plate t ype fuel element s. High concentration of heat reduces shrinkage and thermal distortion for example, in fuel elements welding, total transverse shrinkage weld seam is only 0:02 mm to 0:04 mm for electron beam welds. Complex welded structures of molybdenum are being EB welded.
What is a difference between the steady state conditions and the thermal equilibrium state? In steady state condition, temperatures are constant although heat transfer is taking
Plate shift drum stopper bolt and arm comp Shift drum stopper : Ensure that the plate shift drum bolt is tight and in arm shift drum stopper assembly, check stopper arm bolt for to
Brass is an alloy of (A) Copper and zinc. (B) Copper and iron. (C) copper and Aluminium. (D) Copper and tin. Ans: Brass is an alloy of copper and zin
Find out maximum stress and elongation of the bar: A rectangular bar having uniform cross-section of 4 cm × 2.5 cm and of length 2 m is hanging vertically from rigid support.
What are the Alluvial sediments Alluvial sediments are characterized by stratification or layering and fine grained soil layers have higher compressibility as compared to coars
Plate clutch for warpage : Place plate clutch on surface plate and check for warpage. Ensure that 0.20 mm feeler gauge does not slide freely.
Q. Design Transfer Facilities in plant? Transfer facilities (e.g. pumps, piping, and conveyers) must be arranged so that no leaks can escape the confines of the bund / dike, an
Design varies with scale of operation The design of a fermenter varies with scale of operation from lab (1-20L), to pilot (up to 5000L) to production (to >200,000L) scales. Th
what is equivalent evaporation
What can a valve do? It can prevent flow (on/off), allow variable control of the flow and provide a safe working environment. What sort of questions should we be asking when selec
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