Case Study:

Lerwick District Heating System Repairs

LocationLerwick, Shetland
ClientsShetland Heat Energy & Power Ltd
MissionTo work with Team Inc. and Stuart Malcolmson Contractors to deliver one of the most complex workscopes seen to date on SHEAP’s Lerwick District Heating system.

The Challenge

The project required careful consideration when installing four line stops on the main flow and return lines however, Ocean Kinetics and Team Inc. were able to isolate two sections of line, enabling Ocean Kinetics’ welders to install two new valve sets. SHEAP’s engineers utilised bypass lines to maintain customer supply throughout the works.

The Result

Ocean Kinetics’ welding expertise provided the experience and competence to undertake welding on live lines, which was required to install the four hot tap saddles. Once the new valves were installed, inspected, and NDT’d; Ocean Kinetics went on to manufacture and install bespoke polyethylene insulated muffs, utilising a combination of electrofusion welding and extrusion welding.

Civil activities and support was provided by Stuart Malcolmson Contractors; careful planning of the phased excavation and reinstatement minimised risk to pipework and helped deliver the swift completion of the works.

The job was thoroughly planned and risk managed, with input from all three organisations, SHEAP and the SIC’s Roads Department. MS Teams conferencing software proved invaluable to enable all stakeholders to fully engage, whilst working from different locations (in response to Covid-19). The benefit was a safe, smooth, well organised, site work.

  • First mechanical line stop to be deployed on the Lerwick District Heating Network

  • Scotland’s largest District Heating Network

  • Work carried out with zero disruption to customer supply


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