Gas Distribution Networks
£337,164.00
This project seeks to successfully trial an improved method to replace short lengths of metallic main in specific locations of engineering difficulty (short lengths of main that connects onto its parent main in a major road junction) in a safe, efficient and practical manner and to agree an efficient implementation strategy for the technique.
The primary anticipated benefits of this project will be that Sealback II will:
• Reduction in operational risk and expenditure when replacing the cast iron tee sections. Sealback II would allow the mains located in areas of engineering difficulty to be replaced: e.g. tee’s under major roads and road junctions. In particular this technique delivers a solution to the requirement to replacement short length stub pipes under Appendix F of T/PM/REP2.
- Reduced excavation and reinstatement costs, contributing to the ‘No Dig’ targets;
- Reduced flow stop operations on the parent pipe and associated risks;
- Reduced cost associated with the insertion of replacement tees in large diameter parent mains;
- Enabling the replacement of mains that are not easily accessible;
- Reduced disruptions to the public and requirement for traffic management;
- Reduced damage to third party apparatus;
- Reduce risk associated with working in the highway and costs from lane rental;
- Reduced safety risk to the public due to reduced excavations;
• Considerably reduce impact on the environment and minimize inconvenience to the road user
- Reduce environmental impact by both minimizing all associated works as above including the requirement for imported backfill and landfill of excavated spoil and impact on trees;
- Increased reputation for minimizing disruptions.