15-11-2014, 03:42 PM
Abstracts: Many company ( L&T, boonyanch Engineering) Works is equipped to manufacture large and heavy equipment for nuclear and thermal power projects, chemical, petrochemical, fertilizer industries, aerospace, Composites. Equipment like heat exchangers, pressure vessels generally work at very high temperature and very high pressure. Due to very high pressure and temperature, chances of corrosion and erosion are more. So to reduce it, material with high corrosion resistance shall be provided. But cost will increase. To reduce cost of material shell is made of carbon steel or low alloy steel which is less costly and overlay of stainless steel, Inconel material (anti- corrosion) is provided for corrosion resistance. It is called cladding. Rolling, cutting, welding, inspection test (PT, RT etc...), cleaning are main process of manufacturing presser vessels. For all the process particular time is given, it is required to complete within time. At last Hydro test, helium test is carried out. Dated