Pipe joints are often the point of leakage on pipework systems and the number of joints in piping systems should be minimised where practicable. Joints can be permanently welded for high integrity systems or reformable types such as flanged, screwed or compression fittings may be used. Welded joints should meet the requirements of a standard such as BS 2971 'Specification for Class II welding of carbon steel pipework for carrying fluids'. Welds should be inspected by an appropriate method depending on the application requirements. Radiography and ultrasonics are widely used where high integrity welds are required. The operator should demonstrate that procedures are in place to ensure the appropriate level of integrity is provided by the jointing method employed.
