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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.
Welding Process: There are many definition of a welding process. But the most comprehensive definition is below. Welding is defined as a "a localized coalescence of metals, wher
for drawing large size circles diameter greter than 150mm what is attached to compass? \
Describe the following terms:- a) Shear force and bending moment b) Concentrated load, Uniformly varying load and Uniformly distributed load c) Beam & Types of beam. d)
Load on beam: A beam AB as shown in the figure given below is hinged at A and supported at B by a vertical cord that passes over two frictionless pulleys C and
Q. How can we use Cereals? Foundry cereal is finely ground corn flour or corn starch. It (0.25-2%) increases the green and dry strengths of the moulding sand. Since the cereal
Q. Limitations of fusion bond epoxy coatings? The application of fusion bond epoxy coatings shall be limited to specially equipped coating yards or plants. The plant operations
Explain introduction of Radial Drilling Machine Machine Name: - Radial Drilling Machine Radial Drilling machine is a machine fitted with a rotating cutting tool known as dr
Q. Flue Gas Excess Oxygen Control for steam generator? Air-gas ratio control provides approximate excess oxygen control. However, an in-situ oxygen probe measures the actual o
Merchant forces diagram with assumption
What is the relation between break point elasticity and Yield point elasticity.?
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