Reasons to Clean a PipelineThroughput ImprovementIf pipeline throughput has declined or you need to increase pumping power, the solution is often to implement a cleaning program to remove debris gradually, thereby restoring throughput without blocking the pipeline. Pre-Inspection PreparationUnless its condition is already well known, a pipeline should never be inspected before undergoing progressive cleaning. A clean pipeline allows the inspection tool to collect the most accurate data and avoids the possibility of an expensive inspection tool sticking in the pipeline. New ConstructionNewly constructed pipelines often contain debris, including welding rods, alignment clamps, soil, rocks, wedges, boots and even dead animals that took refuge in the pipeline during construction. Planned MaintenanceIt is widely accepted that best practice in pipeline maintenance includes regular cleaning pig runs. Running cleaning pigs regularly clears the pipeline before debris has time to accumulate. The operator can then be certain that throughput is maximized and the possibility of sticking inspection tools or other pigs is minimized. The best cleaning programs involve weekly or even daily cleaning pig runs. Clearing a Known ObstructionIf regular cleaning runs have not been performed, debris such as wax or scale can build up, causing a significant obstruction. Key decisions must then be made regarding the risk of putting cleaning pigs through the line. If the line becomes blocked, an expensive cut-out may be required to remove the obstruction. The risks of blocking the line at this stage are high, and it is best to use an experienced cleaning contractor to remove the problem. Regular cleaning to restore capacity is a good investment. It is also the foundation of a long-term integrity program when combined with an inspection by an intelligent tool. Integrity is a lot more than a safety issue; it is good management, maximizing return from the system as a whole. |
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Regular Cleaning Is a Good InvestmentCleaning a pipeline is often the simplest way to achieve greater production. Many studies have shown that even small irregularities inside the pipe can cause turbulence in the product flow. Turbulence increases friction loss, reduces capacity and puts an unnecessary load on the pumps and compressors. Greater amounts of debris or deposits in the line increase turbulence, reduce pipe bore and decrease capacity. Our cleaning pigs are adaptable to varying pipeline environments and can be adjusted to remove more or less material. Our Dual Diameter pig is designed specifically to negotiate changes in pipeline diameters and other variances such as valves and hydro-couples. |