Vent line and valve analysis

Vent line and valve analysis

Fatigue failure in piping arrangement mitigated.

Client: A petroleum company.

Tough Problem: Elevated vibration levels were measured on a globe valve in the vicinity of the wellhead area of the platform. Failure of the piping immediately downstream of the valve was of concern due to the potential for increased dynamic stresses near a concentric reducer. Dynamic stress predictions were undertaken to assess the risk of fatigue failure for the valve-piping arrangement.

Practical Solution: Initial field vibration measurement was performed to assess the vibration levels. Finite element analysis was then performed to assess the stress and perform a fatigue assessment.

Bottom Line: Risk of fatigue mitigated with one call to SVT.