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Q. Show Leak Area Preparation?
Clearly mark the location of the leak on the flange with a permanent marker.
Notes: 1. Depressurizing hydrocarbon lines in non-emergency events is not desirable.
For high temperature service refer to ASME B16.5 for maximum allowable pressures.
The leak repair procedure can be implemented provided the following conditions are met:
Leak rates are considered manageable and environmental conditions in the proximity of the leak allow safe maintenance operations.
Every attempt to eliminate ignition sources has been made.
Non-sparking tools shall be used in cases of hydrocarbon leaks.
A qualified process supervisor, safety person, maintenance supervisor, and design engineer have reviewed and approved the work.
The leaking flange does not have a ring joint gasket.
The Ordinate Dimension Command We can use The Ordinate command to annotate co-ordinate points with X or Y values. This might be useful for setting-out on site plans.
Explain Roughness width and Roughness width cut off? Roughness width: - Roughness width is the distance parallel to the normal surface between successive peaks or ridges whic
Q. Design pressure of Vessels? The design pressure shall be as specified on the Vessel Data Sheet. The design pressure for a vessel in vacuum service shall be full vacuum (1
Five kilograms of continuous boron fibers are introduced in a unidirectional orientation into 8 kg of an aluminum matrix. Calculate a. the density of the composite b.
Q. Explain about Post-weld Heat Treatment? Post-weld Heat Treatment (PWHT) shall be in accordance with the Code. PWHT procedures, including properly identified charts or certi
explain with suitable eg. static and dynamic force analysis
Stellite This is an alloy of Co as 40-60%, Cr as 25-35%, W as 4-25% and C as 1-3%. This is a cast alloy comprising C, W, and Cr in Cobalt matrix. Its major characteristic is l
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