In September 2015, National Grid awarded a contract to replace the existing Shunt Reactor 1 at Lovedean 400kV substation.
This was the first substation project that our Client had undertaken for National Grid with the scope of work comprising of:
- Demolition of the existing brick noise enclosure including removal of the asbestos insulation board around the transformer turrets
- Removal of the existing shunt reactor and cooler bank, including oil removal works
- Modifications to existing bund and plinth to accommodate the new shunt reactor, including bund lining
- Provision of flame trap and new drainage connection to the existing emergency oil drainage run
- Construction of new foundations and new structures to support a new 400kV, 63KA for 1s, standalone earth switch free issued by National Grid.
- Management of the installation of a new 400kV 200MVAr shunt reactor provided by the bulk purchase contractor
- Procurement and installation of new 400kV surge arrestors
- Incorporation of new alarms and indications within the substation control system
- Modifications to the existing security fence to facilitate the installation of the new shunt reactor
- Provision of new site lighting
Omnia’s scope of works in this project included:
- Project Management on behalf of the Client
- Undertaking the role of Principal Designer in accordance with the CDM Regulations 2015 and National Grid’s TP137 procedure.
- Provision of a TP141 Contractors Design Engineer (P&C and HV Plant) to lead the design team and ensure all design was in accordance with National Grid transmission specifications.
- Undertaking settings calculations to identify the changes required to the retained transformer protection in accordance with National Grid’s TP107 procedure.
- Provision of a SHE Advisor on behalf of the Client
The key challenge for this project was the programme with the outage commencing in October 2015, only 1month following contract award, and energisation scheduled for March 2016. Furthermore, with the outage spanning the winter period it also introduced weather risk into a programme that had several activities that were weather dependant such as crane lifts, working at height, bund re-lining and commissioning activities.
With Omnia Projects support, our Client successfully delivered their first substation scheme for National Grid on programme and without any injuries or environmental incidents.
For more information on this project please contact .