A means of assessing the integrityThe capability of a pipeline to perform its intended function safely and reliably throughout its life. It includes a range of factors, including the structural … of a new or existing pipeline, as detailed in American Petroleum Institute (API)The US Trade body for corporations engaged in oil and gas production and distribution. 1110 that involves filling the pipeline with waterAn inorganic compound of hydrogen and oxygen. Used in non-destructive testing as a penetrant and as a medium for testing. and pressurizing to a level higher than the maximum operating pressure (MOP)The maximum pressure that a pipeline or pressure vessel is designed to safely handle during normal operation. It represents the highest pressure that the system… of the pipeline to demonstrate that the pipeline is fit for service at the MOP.