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Q.Explain working of Steam Drum?
Total solids concentration in the steam at steam manifold outlet shall not exceed 0.5 ppm during steady operation at MCR. Fabricator must indicate the maximum acceptable total dissolved solids concentration in the boiler water when operating normal drum water level.
The normal water operating level in the steam drum shall be not less than 25 mm (1") below the drum center line. In the drum, the surface area of the normal operating water level shall be sized based on 100% MCR, such that the maximum surface release rate shall not exceed 3,900 kg/m2h (800 lb/ft2h).
Water hold-up between fabricator's stated normal water level and top downcomer level shall be sufficient to enable operating at 100% MCR for at least five minutes in the event of loss of boiler feed water supply. This resident time design shall include ramping rate of 20% MCR per minute.
The water surge volume in the steam drum shall be adequate to accommodate the resultant swell from increase in load of 20% of MCR per minute without actuating the low water level cut-off.
Determine about the extent of excavation The extent of excavation depends upon the construction problems like dewatering and uplift. In extreme cases anchoring of the box may b
Axi s of symmetry If in diagram half part of diagram is mirror image of next ½ part, then there is a symmetry in diagram. The axis at which symmetry is create, called as axis
Q. Soil conditions for plant layout? Soil conditions affect the foundation requirements, drainage, type of substructure used and may limit the size and shape of the facility. T
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clamping calulations
Determine concept of Hydrostatic sensor paver machine A sensor asphalt paver is a machine used to deal out, shape, and partially compact a layer of asphalt on the surface of a
Calculate the centroid (use point A as the reference) and the moment of inertia of the shape shown in Figure. The dimensions are given in centimeters. Calculate the moment
Q. Feedwater Controls for Steam generator? associated with that Steam Generator. The flow controllers utilize regular P.I.D. controllers, and their outputs are fed directly to
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SUBMERGED ARC WELDING-Set Up Submerged arc welding system consists of the following basic modules: 1. Welding head 2. Power source 3. Flux feeding and recovery units Schematic
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