Remote Live Mains Insertion (RLMI)

Completed

Fossil Fuels: Oil Gas and Coal(Oil and Gas, Refining, transport and storage of oil and gas)

Applied Research and Development

ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering)

Not Cross-cutting

Project Contact
Cadent Gas

Network Innovation Allowance

Ofgem

01 April 2019

01 March 2021

ENA months

£235,000

Energy

London

Network Innovation Allowance

Project Contact, Cadent Gas

RLMI will be designed for use from within an excavation and will permanently abandon the annular space between the existing metallic service and the new PE liner. The RLMI solution builds on several robust, approved and commercially available techniques offered by SVI, including GIS:LC14 approved Sealants and Foambag systems The scope has been developed and agreed between Cadent and SVI.1. In house testing Steve Vick International Ltd (SVI) will carry out testing on the two Tier 1 pipe diameters. In total there will be 9no. tests of 75mm PE in a 4” host mains & 9no. tests of 125mm PE pipe in 6” host mains. Host mains will include cast iron, ductile iron and steel. The tests will confirm positioning, foambag and annulus sealing performance, through associated pressure testing.2. Full system testingThis will test the systems ability to be deployed successfully and ability to cope with varying host pipe substrates. The tests will be performed at the SVI depot with a Cadent representative present to witness the testing. A total number of three full system tests will be carried out for each pipe diameter combination using varying host mains.3. Field trialsOnce laboratory testing has been completed successfully, a period of field trials under G23 guidance will be required. The field trials will be carried out on the Cadent network and be witnessed by the SVI project manager and representative(s) from Cadent. The installation will be performed by SVI technician teams. There shall be a minimum of 12 field trials, with six field trials for each pipe diameter size combination. The objective of the project is to test the RLMI method through the phases detailed in the project scope, above

RLMI will be designed for use from within an excavation and will permanently abandon the annular space between the existing metallic service and the new PE liner. The RLMI solution builds on several robust, approved and commercially available techniques offered by SVI, including GIS:LC14 approved Sealants and Foambag systems.

26/10/22