| 摘要 |
599432 Disclosed is a method of laying a mechanically lined pipe (MLP) (12) from a reel (10). The method involves the steps of spooling the mechanically lined pipe onto a reel in the complete or substantial absence of internal pressure above ambient pressure in the mechanically lined pipe, spooling the mechanically lined pipe off the reel and subsequently straightening the spooled off mechanically lined pipe to provide a mechanically lined pipe for laying. Furthermore, the mechanically line pipe is laid and subsequently pressurised to reduce wrinkles in the pipe to an acceptable height of less than 2mm. This method provides the advantage of not requiring pressurisation during reeling, significantly reducing the risk of serious injury in the case of pipeline failure during reeling or unreeling, while also removing wrinkles which would be detrimental to the operation of the pipeline. A mechanically lined pipe (see 2, figure 1) useable in the aforementioned method is also disclosed, having an outer layer (see 4, figure 1) configured to resist buckling under hydrostatic pressure and a smooth interior liner (see 6, figure 1) which protects the outer layer from corrosion due to the chemical composition of the fluid being conveyed. |
