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Hathersage Road

When 500mm PE will not do!





 SNM pipelines have recently completed a project on Hathersage Rd Manchester adjacent to Manchester Royal Infirmary and St Mary’s Maternity Hospitals, the scope was to decommission a 330metre section of 24” cast iron gas main and commission a replacement pipe.


Due to a high volume of traffic on both Hathersage Road and Upper Brook Street both major tributaries  into Manchester City centre and also the close proximity of both the hospitals and the University of Manchester campus, traditional open trench methods of construction to achieve equal capacity and volume of the existing 24” main were not feasible.


The Northwest Gas Alliance specified 560mm SDR21 PE80 pipe to be inserted through the existing 24” CI to maximise the internal bore. SNM pipelines completed the project as planned using a company owned large diameter hydraulic pushing machine (as photographed) for the insertion process and finally tying back into the network via valve connections at each end.


This is the first time the NWGA has used this particular size and grade of pipe, previously this project would have been completed with 630mm PE requiring an open trench construction which would have been significantly more costly, increased the construction timeline with additional disruption to road users and the locality and also a substantial increase to imported and exported materials creating a direct impact environmentally.






UVDB - Utilities Prequalification Scheme UVDB - Utilities Prequalification Scheme UVDB - Utilities Prequalification Scheme UVDB - Utilities Prequalification Scheme British Safety Council Energy & Utility Skills Register

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