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Q. Process of Alloy Materials Sampling?
The following alloy-materials require a minimum of 10% per lot representative PMI sampling. If any incorrect material is found in representative sample basis testing, 100% PMI verification shall be required.
• Tubular products used in the fabrication of equipment, such as heat exchangers and boilers, provided that traceable mill certification is available.
• Fired heater, heat exchanger, and boiler internals example: tube hangers, tube supports, and tube-sheets. Internals which are part of the supports in fired heaters and boilers are also included in the PMI program.
• All alloy steel bolting, fasteners and nuts.
• Ring joint flange and clamp type (e.g., Grayloc) connector flange gaskets.
• Internal non-pressure-containing parts. Metallic alloy components for refractory linings (e.g., refractory anchors and hex mesh) shall be covered under this requirement.
Define the nature of shear force and bending moment under load variation. Sol.: The nature of SF and BM variation under two-load region is given in the table below
Q. Process of Corrosion in BFW Tank? The feed to the BFW Tank is hot and will be flashing when it enters the tank. The vapours will be corrosive when the tank is open to atmosp
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Q. Nozzle Design Loads? Minimum nozzle design loads shall be in accordance. F = Axial force on centre line of nozzle (lbs); Maximum Transverse Force =1.5F F R = Resultan
cases of equilibrium with explaination
(a) What are the disadvantages of not washing a motorcycle before servicing it? (b) List the parts on which water should not fall directly. (c) Write down the steps for washing and
WELDING VARIABLES The following major process variable play an important role in shaping the weld bead and the resultant weld metal in submerged arc welding: a. Welding cu
Q. Hot Service Insluation Thicknesses? Hot Service Insluation Thicknesses are specified based on the following design criteria: • Average Annual Climatic Conditions:
Is it possible to rotate turbine blades without any fluid means there is no requirement of water or air to rotate turbine blade. blades may rotates with the help of spring compress
Q. Show the procedure of Welding of vessels? Welding of vessels, including pressure retaining parts and attachments thereto, shall be performed utilizing Welding Procedures, We
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