Since the publication of the Energy Institute (EI) Guidelines for avoidance of vibration induced fatigue failure of pipework [1], Shell has incorporated the acceptance criteria into the design philosophy and adopted them in vibration induced fatigue best practice as an RBI (risk based inspection) module. In tandem, with a practical application of these guidelines in assessing in service pipework’s susceptibility to vibration induced fatigue using a screening methodology, a web based software called Pipework LOF was developed incorporating these assessment procedures. The software is a screening tool based on the Guidelines and Shell’s Best Practice Guidelines [2] intended for use by engineers with awareness level understanding of vibration. The results are in the form of traffic light signals providing a screening criteria to highlight hot spots (red signal pipework) in need of further inspection or evaluation to check on parameters that govern its susceptibility to vibration induced fatigue. A useful and popular function of the software is the sensitivity tab which allows for the opportunity during the assessment stage to alter certain process or mechanical parameters of the pipework to lower the Likelihood of Failure value and alter its traffic light severity. At present, this software has been rolled out to Shell’s LNG plants with good feedback and customer satisfaction. Where it has been rolled out, operating sites now have the capability to address vibration problems and do a first pass screening. Any further assessment will be more focused to tackle the source of the vibration by removing its mechanism.

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