Introduction Composite repairs are gaining popularity and acceptance worldwide among asset owners and operators. Composite repair methods and procedure are guided international engineering standards and provide an engineered, proven and durable solution to non-metallic pipe repair works. Components of composite repair materials generally comprise of filler rebuilding material, resin component and reinforcement layered sheet. Filler…
Introduction One of the main considerations that need to be taken into account when using a pipe repair clamps is the ability of the repair system to accommodate the pressure imposed axial loadings/stresses. The other main consideration is the pipe remaining wall thickness – if the mechanical strength of the pipe is sufficient to withstand…
Introduction Most pipe repair components have a design basis in accordance with internationally recognised codes or standards. However in most cases these codes or standards may not concern piping or pipelines, but concern pressure vessel type codes, such as ASME Section VIII: Pressure Vessel Code, or API 6H: Specification on End Closures, Connectors and Swivels. Pressure vessel…
Common Causes of Flange Leakage A previous article highlighted the primary causes of flange leakage. This article provides more information about these. Uneven Bolt Stress. An incorrect boltup procedure or cramped working conditions near the flange can leave some bolts loose while others are overtightened and crush the gasket. This can cause in-service leaks, especially…
Here are some steps to help you deal with pipe bursts and pipe leaks. This article deals with temporary pipe repair instead of replacing it. Leakages The water supply is under pressure, typically somewhere around 40 to 60 psi. A patch on a leak requires counter-pressure as well as a compressible material to help in molding it…
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Introduction Copper Pipes have high mechanical quality; however the sensitive material is delicate and will weaken under high pressure. Leak will start to happen when the Copper Pipe system is subjected to considerable vibrations. Performing Copper Pipe leak repairs for little estimations can be viably completed after the underneath repair methods. Surface Preparation of Affected…
If a leak happens on an underground pipe after the meter from the water main, it looks like you will have to plan for the repair works to be carried out. This can be done with repair putty compounds. 1. Check and Confirm the Pipe Routing You may still have the old drawing of the pipe routing. Check to…
Introduction Pipe weld joints are one of the weakest links within the piping system. Pipe leaks often occur around the weld joints due to various reasons. Some of the reasons include: Lack of fusion Corrosion at heat affected zone Crack (due to heat stress, solidification, hydrogen-induced) Porosity Contamination Inclusion of slag In order to arrest…