Poolbeg Generating Station

Poolbeg Generating Station (irish place name|Cumhachtstáisiún an Pholl Beag|power station of the Small Holefact|date=March 2008) is a power station owned and operated by the Electricity Supply Board of the Republic of Ireland. There are two stations on the site, the older thermal station containing units 1, 2, and 3 and the combined cycle gas station containing units CG14, CG15 and ST16, which is located toward the eastern end of the site. The six units have a total installed capacity of 1020 MW.

The plant is located on the Poolbeg peninsula in Ringsend, Dublin, on the south bank of Dublin Port. Its two chimneys, at just over 207 metres, are visible over much of Dublin, particularly Sandymount Strand, making them well-known landmarks and some of the tallest structures in Ireland.

History

Poolbeg is situated adjacent to the now-decommissioned Pigeon House generating station, where electricity was first generated in 1903. The Pigeon House was previously a military barracks and the officers accommodation building still exists. It was used for power generation until it was decommissioned in 1976, and the Poolbeg plant is still known locally as "the Pigeon House".

The modern Poolbeg station was constructed in two separate phases, beginning in the 1960s. The ESB decided to construct the station in 1965 and the initial development was completed in 1971 with the construction of Units 1 and 2 at a cost of 20 million Irish pounds. The original Pigeon House generators remained on standby duty until 1976. Unit 3 was completed in 1978 at a cost of 40 million pounds.

The combined cycle station was constructed in the 1990s. CG14 was commissioned in 1994, CG15 in 1998 and ST16 in 2001.

Technical Details

The identical units 1 and 2 have a design output of 120 MW each. They both have turbo-alternators manufactured by Brown Boveri and 'drum type' boilers by Fives Penhoet, France.

Unit 3 has a design output of 271 MW. It uses a turbo-alternator manufactured by Alsthom, France and a 'once through' type Boiler by M.A.N Germany.

Uniquely among power stations run by the Electricity Supply Board, all three units in the thermal plant can currently fire on oil or gas. Gas is supplied to the site by the Bord Gais network. Oil is stored in five tank in the site's oil farm, with a maximum capacity of 140,000 tonnes.

The CCGT plant has two Siemens V92.4A gas turbines (units CG14 and CG15), a HRSG and a steam turbine (ST16).

Poolbeg Chimneys

The thermal station chimneys are among the tallest structures in Ireland and are visible from most of Dublin city. Number 1 chimney is 207.48 (680ft 9in) high. Number 2 chimney is 207.8m (681ft 9in) high. Dublin City Councillor and historian Dermot Lacey has initiated a process to list the chimneys for preservation to safeguard their future after the Station closes in 2010. [http://www.ireland.com/newspaper/breaking/2007/0706/breaking55.htm]

External links

* [http://www.esb.ie Electricity Supply Board of Ireland]
* [http://www.esbelectricmail.com/_archives/em_archive/archives/indexc9f1.html?id=1066&cat=1 Information on Poolbeg CCGT]
* [http://www.poolbegmarina.ie Poolbeg Yacht, Boat Club, & Marina ]