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Process Equipment and Plant Design

Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

0.5
1.5
2.5
3.5

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering run) would be around

350
5
200
60

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Process Equipment and Plant Design
Flanges are connected to pipes by

Welding
Brazing
All of these
Screwing

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Process Equipment and Plant Design
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is

Less
Same
More
Cither A or B; depends upon the I.D. of the pipe

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Process Equipment and Plant Design
Spherical shaped pressure vessel is considered to be the most ideal, because it can

Withstand higher pressure for a given metallic shell thickness
Be fabricated very easily
Be supported very easily
Be designed without wind load considerations

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Process Equipment and Plant Design
Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing

Surge chamber
None of these
Rupture diaphragm
Dikes

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