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SAFETY IN TIG WELDING-Radiation Energy HazardRadiant energy may cause injury to the welder in two areas, eye and the skin. Any personnel, whether the welder, inspection personnel or the helper, present within the immediate vicinity of a welding operation, should be adequately protected from the radiation, particularly the ultraviolet radiation produced by the welding arc. Generally the highest ultraviolet radiant energy intensities are produced when argon shielding gas is used and when aluminium or stainless steel is welded. For the protection of the eye, filter glasses of proper shade depending on the welding current should be used.The recommended shades for different welding current as prescribed in national / international relevant safety standards and codes should be selected.
I have faced a serious problem of Lead segregation and porosity in Copper Tin Zn alloy containing 26-30 % lead sand castings.Can anybody throw light on this
Motion of the boat: (i) A man having weighs 500 N and is in a boat weighing 1500 N which is free to move over a steady lake. If he begins running along the length of the boat
a) Why cutting fluids are used for machining of metals? List different types of cutting fluids and additives for cutting fluids. b) What factors are responsible for surface fin
The wing of a light, single-engine general aviation aircraft has an area of 15.8 m 2 and a span of 9.6 m. The airfoil of the wing is NACA 65-415, which has a lift slope of 0.1033
Types of Culverts: Culverts are constructed with various materials and to different designs. The popular forms are : (a) Temporary stone scuppers (b) Stone slab culverts
Q. Painting of structural components of skid? Sandblasting and priming shall be carried out prior to assembly, and shall include all bolt holes, flange faces, etc. Flange gaske
Q. Design evacuation systems for plant? The plant will have designated Muster areas where personnel can go during an emergency and be accounted for and from which they can then
Crankshaft : It converts the reciprocating motion of the piston into useful rotary motion. In the crankshaft of a single cylinder engine, there is a pair of crank arms and balance
Types of Registration Provisional Registration Certificate ( PRC ) This is given for the pre-operative period and enables the units to obtain the term loans and worki
Application of Cost-Volume-Profit Relationships: Quality stores open for 10 hours a day. Company is considering decreasing the store hours through one hour. This shall resul
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