|Capacity||220,000 bbl/d (35,000 m3/d)|
|No. of employees||700 (2000)|
The Pembroke Refinery is an oil refinery situated on the Pembrokeshire coast in Wales at Rhoscrowther in the community of Hundleton. It first came on stream in 1964. The refinery occupies a prominent position on the south bank of the Milford Haven Waterway and can be seen for many miles. Around a quarter of the site is within the Pembrokeshire Coast National Park which was created in 1952.
The refinery came on stream in 1964. It was initially owned by the Regent Oil Company, a large domestic marketer of Trinidad-produced oils. Regent was fully acquired by Texaco in 1956 (although the brand name was only phased out in the UK in favour of Texaco in the late 1960s). Chevron acquired Texaco in 2000. Valero Energy Corporation bought the refinery from Chevron in 2011.
In August 1992, Texaco offered to purchase the entire village of Rhoscrowther which lies immediately adjacent to the refinery. Many of the residents accepted the offer - especially after a large explosion which occurred two years later - which included their properties being purchased at market price plus reasonable expenses. Once the properties were acquired by the refinery, they were demolished. Today, only five houses, a 14th-century church and a farm are all that remain of Rhoscrowther.
- At around 13:00 on 24 July 1994, twenty-six people were injured when a large explosion ripped through the plant. The blast's shockwave shook windows, doors and damaged properties within a 10-mile radius and was heard up to 40 miles away. Shortly before the explosion, a dry lightning storm in the area had caused disturbances at the plant. The resulting fire took several hours to extinguish with fire appliances being drafted in from as far away as Swansea and Cardiff. In all, over 130 firefighters assisted.
- Just after 20:00 on 15 February 1996, a crude oil tanker, the Sea Empress, en route to the refinery from the North Sea struck rocks off St. Ann's Head just four miles from the refinery's jetty on the Milford Haven Waterway. The tanker remained stuck on the rocks for four days and spilled 73,000 tonnes of oil - resulting in one of Britain's worst ever environmental disasters.
- In September 2000, during nationwide fuel protests, the gates to the refinery were blockaded by hauliers protesting at increasing petrol prices (then 80 pence per litre). Shortly after the protests, the refinery placed wooden stakes in the verges around the gates and perimeter fence to prevent vehicles parking there.
- At 20:55 on 24 March 2005, a fire broke out at a crude oil storage tank during a lightning storm. The blaze was fought by fifty firefighters and took just under an hour to extinguish. No injuries were reported.
- At 18:20 on 2 June 2011, a 730 cubic metre storage tank exploded  killing four refinery workers and seriously injuring a fifth. Ten fire and rescue appliances attended the scene, along with many other emergency services. The fire was extinguished within 90 minutes.
- "£44m investment at Pembroke refinery". BBC News. 2000-07-26. Retrieved 2010-01-03.
- Report by the Monopolies Commission on the Supply of Petrol to Retailers in the United Kingdom, 1965
- "Chevron and Valero's deal to buy Pembroke oil refinery". BBC News. 11 March 2011. Retrieved 2011-03-11.
- Prestage, Michael (9 August 1992). "Texaco offers to buy village". The Independent. London.
- Texaco press release, 24 June 2004
- "Fire crews fight refinery blaze". BBC News. 24 March 2005.
- "Chevron blast: Two questioned over Pembroke refinery deaths". BBC News. 9 February 2012. Retrieved 2012-02-09.
- Batty, David (2 June 2011). "Four people killed in Wales oil refinery explosion". London: Guardian News. Retrieved 2011-06-03.
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