Site Welding -Part 1 Tools, Equipment and facilities A compromise between equipment and production costs must be reached. Specialism welding equipment often requires experienced operators, who are not likely to be found or cannot be retained on the permanent basis, owing to non-continuous operations. Often even though a field training program for the use of such equipment is provided, the site welders resent change and do not readily accept new ways of doing things. The delay in overcoming this attitude, and in acquiring sufficient experience for proficient use of the new equipment, mean that its potential economic advantages are not realized. A possible solution to this problem is that operators of such...

Introduction: Here we will discuss about the qualification tests for welders, economic choice of tools, the environmental contingencies of open air welding and quality control. There are innumerable factors which can be considered in regard to site welding so no single operational policy can be established to cover all site conditions. Therefore some of the factors affecting site welding in general will be discussed. Site...

Figure shows the general layout of a diesel engine power plant. The engine and its various auxiliaries systems are depicted with their proper positions. The flow path of air, fuel and gas are shown by arrows. The plant consists of the following: Engine Air Intake system Exhaust system Fuel system Fuel Injection system Cooling...

Diesel Electric Power Plants available in the range of 1MW to 50 MW capacity are used sometimes as central station for meeting small requirements and universally employed as stand by plant to supplement thermal power station or hydraulic station. Applications: The following are the applications of diesel electric power plants: Pick load plant: Diesel plants are suitable as pick load plants in combination with  thermal...

Aims and objectives of maintenance: The purpose of maintenance is to maintain the steam turbine in order to achieve as high a plant availability as possible at the minimum cost. Maintenance of steam turbines used in power station may be classified broadly in three categories: Rectification of defects: The defects may or may not be urgent. If immediate repairs are needed, these may be carried out on running limits...

Goto: Page 1 B.  Sequence when the turbine is in motion: Apply the load gradually. Check up the oil pressure going to the bearings and control gear. Observe the oil bearing temperature. Observe the turbine for any noise, vibration by watching the vibration and other indicators. C. Sequence when shutting the turbine down: Gradually reduce the load to 0. Start the auxiliary oil pump and make sure that oil will...