| Tranmere Oil Terminal | |
| Location Map: | United Kingdom Cheshire |
| Location Map Text: | Location within Cheshire |
| Country: | England, United Kingdom |
| Operator: | Shell UK (1924–2011) Essar Oil UK (2011-present) |
| Owner: | Essar Energy (2011-present) |
| Founded: | 1960 |
| Capacity Bbl/D: | 296000 |
| Employees: | 960[1] |
Tranmere Oil Terminal is situated on the River Mersey, 1.5miles south of Birkenhead. It was opened on 8 June 1960 to handle vessels of up to 65,000 tons, at two berths (North and South).[2] It is connected to the Stanlow Oil Refinery by a 15miles crude oil pipeline. and a fuel oil pipeline. Part of the terminal occupies the site of a former ferry service to Liverpool, with the extant pier considerably modified.
The terminal is operated by the Mersey Docks and Harbour Company.[3]
The terminal was built jointly by Shell Oil, then the owner of Stanlow Oil Refinery, and the Mersey Docks and Harbour Board at a cost of £6 million.[4] It was built to replace the role of the Herculaneum Dock and the later Eastham Oil Terminal which had only been inaugurated in 1954, but which did not have sufficient water depth to handle the 65,000 ton vessels that were operating by 1960.
By 2001, the terminal had two converted crude oil tanks which could handle 30000t. These were used for the storage of crude oil from the Foinaven oilfield.
All the crude oil feedstock for Stanlow Oil Refinery is delivered via the Tranmere terminal. The terminal is capable of handling vessels of up to 65,000 tonnes, and cargo sizes up to 170,000 tonnes on part laden Very Large Crude Carriers (VLCCs).[5]
Tranmere handles 140 ships every year, carrying a total of 9 million tonnes of crude oil.
The size and operating pressure of the pipelines between Tranmere and Stanlow are as shown:[6]
| Crude oil | Fuel oil | ||
| Length | 15 mile, 24 km | 15 mile, 24 km | |
| Diameter | 24/28 inch, 610 mm | 16 inch, 400 mm | |
| Pressure | 650 psi, 45 bar | 650 psi, 45 bar |