Details
- Contract Start 27 Jan 2014
- Location Inverkip, Inverclyde
- Client Brown & Mason ( Scottish Power Asset)
- Duration 16 Weeks
- Category Current Projects
Description
Challenge
Inverkip power station was an oil-fired power station in Inverclyde, on the west coast of Scotland. Built in the 1970’s, it was rarely used due to soaring oil prices.
The site to be decommissioned was the cable run from the former Inverkip Power station, Inverclyde to the live 400kv Inverkip switching station. The Power Station had been demolished to slab level by Brown and Mason, leaving the redundant 400kv oil filled cables that run from the former power station up to the 400 KV switching station. There were three circuits, three cables per circuit identified as copper cores, paper insulated and aluminium sheathed. There were approximately 49 control cables that follow the same route. The 400kv cables are oil filled and oil had been partially removed from the lower Section (from power station to railway line). The upper section was still full of oil. This was a liability for Scottish Power. The cable route was through woodland, cable tunnels, ducting under Network rail, railway line and through farmland.
Gilmerton Land Services (GLS) Solution
Once as laid drawings had been received, GLS performed a full site survey to establish a proposed scope of works. As a result we were able to offer a lump sum credit of £126,500.00 to Brown and Mason to allow for work to commence at no risk or cost to the client.
The site was cleared of trees/vegetation prior to bird nesting. Oil was purged from the 400kv cables, all cable removed and ground re-instated in stages working up towards 400kv switching station.
Scope of works
- Tree removal and chipping
- Purging of oil from 400kv cables approx. 10,000litres
- Excavation of 3 trenches approx. 800m each to access cables
- Removal of all 3 circuits and 49 control cables
- Cable removal from Tunnels – confined space works
Services Provided
- Site survey
- Vegetation Removal
- Radio detection – Cable location
- Establishment of other existing live services
- Excavation
- Purging of oil filled cables
- Oil Testing
- Working under Live 400kv OHL – HSE GS6 Guidance
- Traffic Management – chapter 8
- Cable recovery – Removal of all redundant cables
- Confined space work
Recycled From Site
- Scrap cable for recycling 270 Tonnes
- Recovered Cable Oil for recycling 10,000 Litres
Results
GLS were able to remove all oil filled cable and associated control cables, thus removing the environmental liability and delivering real value to Scottish Power.
