Question

Bolts in the flanged end of pressure vessel are usually pre-tensioned. Indicate which of the following statements is true

• A. Pre-tensioning helps to seal the pressure vessel
• B. Pre- tensioning helps to reduce the effect of pressure pulsations in the pressue vessels
• C. Pre- tensioning reduces the maximum tensile stress in the bolts
• D. Pre- tensioning increase the fatigue life of the bolts

Answer 1

The correct option is D Pre- tensioning increase the fatigue life of the bolts

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