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Author: Admin | 2025-04-27
Are especially vulnerable to plugging issues. Cleaning is usually only an issue where man-entry is not possible. If a conduit requires cleaning, it should only be done after careful consideration of the potential effects on known or suspected deterioration within the conduit. The basic philosophy used in the cleaning of conduits should be to ‘do no harm.’ This means a very cautious approach is required for cleaning of conduits”.[3]“Cleaning may be required to improve the flow capacity within the conduit due to hard deposits, bacterial growths, sediments, or debris that may have collected in the conduit. Periodic operation of the conduit will flush out many of these types of collections. However, infrequent operation or nonoperation may allow for continued buildup of these collections”.[3]“The improper use or the selection of incorrect cleaning equipment may cause additional damage to a deteriorating conduit and further degrade its structural integrity. The type of conduit material (i.e., concrete, plastic, or metal) must be considered in selecting the appropriate cleaning method. Some conduit materials (such as CMP) are much more prone to defects. Cleaning of inaccessible conduits should only be considered after CCTV thoroughly inspects the conduit. If a deteriorating conduit is cleaned without the benefit of CCTV inspection, the conduit may become unknowingly damaged”.[3]“In some situations, minor cracks or joints experiencing seepage may eventually seal themselves by calcite deposition. This occurs when calcite precipitates out of solution and forms a deposit. Deposition may occur as the seepage evaporates, leaving the calcite behind. Calcite deposits typically
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