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Q. Define Maximum Allowable Working Pressure?
The MAWP to be marked on the Section VIII nameplate is defined as the maximum gauge pressure permissible at the top of a completed vessel in its normal operating position at the designated coincident metal temperature for that pressure. This MAWP may be determined from the design pressure or from calculations, based on the specified nominal component thicknesses, reduced by the specified corrosion allowances.
The maximum permissible set-to-operate pressure of a single safety relief device cannot be higher than the MAWP.
A suitable margin consistent with the uncertainties with which the true maximum mean-metal temperature can be determined should be included. The design temperature for vessels shall be the maximum temperature for which a reduction in maximum allowable stress is not required (6500F (3430C) for carbon steel). If there is a limiting appurtenance, vessel design metal temperature shall be the maximum temperature allowed for that appurtenance at design pressure.
Calculate the crack Stress Intensity Factor: If on the beam specimen of last problem two loads, each equal to 500 N, are applied at distance of 25 mm from central plane, calcu
Describe various classifications of instruments and differentiate between null type and deflection of instruments with suitable examples.
Motor shall operate successfully at rated load with a voltage variation of plus or minus ten percent and frequency variation of plus or minus five percent, or combined variation of
Di fferentiate between strength of material and engineering mechanics Sol.: Three primary areas of mechanics of solids are statics, dynamics and the strength of materials.
what is strength of material?
Standard for the specific standard technical areas These norms are based on previously described models. Typical categories of these norms are: (a) drafting, which describe
Find out the thickness of the metal and the hoop stress: The cylinder of a hydraulic press has an internal diameter of 0.3 m & is to be designed to withstand a pressure of 10
Spot welding of different metals-Aluminium and its alloys High currents and shorter welding times are necessary for these materials. Special cleaning of the surface is warrante
Screw conveyor Screw conveyor during mixing and flow directing paddles are selectively adjustable for use on a wide variety of materials having dissimilar flow characteristics
Q. What is Warm extrusion? • Warm extrusion is done above room temperature, but below the recrystallization temperature of the material the temperatures ranges from 424 to 975
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