This project involved the rationalisation of the Above Ground Installation at Paull, Humberside. Working for Amec Foster Wheeler on assets owned by National Grid and Northern Gas Networks, the scope included the decommissioning of existing streams and the installation of new pipework, along with associated electrical and instrumentation works.
The first phase of works was conducted over winter with significant challenges associated with the weather and on-site flooding; water pumps were required to facilitate works. PMC was recognised by the National Grid Project Manager for delivering the works in difficult circumstances whilst meeting all Health and Safety and Environmental requirements. The works were vast. With over 400 welds, the PMC welding department conducted around two years worth of welds in the space of six months. PMC employed a multi-skilled workforce to deliver the installation and on-site welding, testing and inspection in a seamless sequence.
PMC conducted all mechanical aspects of the project, which included pipe fabrication and installation of approximately 250m of above and below ground pipework with diameters ranging from 33mm to 330mm. PMC also replaced the existing minimum off-take inlet pipework, a twin stream filter bank, a modular boiler package complete with two 100% heat exchangers and two ultrasonic meter streams. PMC completed the replacement of regulators in two existing streams, cut and capped and decommissioned the feeder that crossed the site and removed redundant water bath heaters, filters, regulators, meter streams and below ground pipework.
Phase one of the works involved the off-site sectional fabrication, hydrostatic testing, non-destructive testing (including radiography and phased array) and blasting and coating (to PA10 and CW5 specification above and below ground respectively of pipework, all of which were carried out at our purpose-built paint and blast facility and welding workshops at Ambergate. Over 300 fabrications were undertaken during this phase of the works.
Phase two of the works were on-site. PMC managed the logistics associated with handling and transporting the sectional fabrications to site and procured the services of a lifting subcontractor for on-site cranage.
PMC also played a large role in the procurement of long lead items and the re-design requirements throughout the projects. These activities were integral to ensuring the delivery timescales were met.