Atteris performed investigations on the available survey data to determine the cause of the identified pipeline movement and excessive spanning. Initial span analysis indicated unacceptable levels of fatigue. As such a refined fatigue analysis of key spans was performed including a probabilistic assessment of the possible fatigue considering varying distributions of key parameters. The probabilistic assessment assisted the client in making risk based decisions concerning the preferred mitigation approaches. Atteris supported the decision making process and provided detailed span rectification design.
