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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.
Q. Nitrogen storage and vaporizer? Bulk cryogenic storage of nitrogen must be located away from process equipment, preferably at the edge or corner of the process area where fi
Cross Drainage Works: Culverts A large number of culverts are needed for taking care of the streams crossing the railway lines. The culverts can be one of the followi
question no 2,page no 84 of strenght of materials by G H Ryder
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The shaft, as given in Figure is driven by pulley B from an electric motor. Another belt drive from pulley A is operating a compressor. The belt tensions for pulley A are 1500 N an
Explain Plate Type Jig?
Q. Plastic part manufacturing process? Plastic belongs to the family of organic materials. Organic materials are those materials which derived directly from carbon. They consis
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