Agecroft Power Station

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Agecroft Power Station
MBB canal Agecroft Power Station.jpg
Agecroft Power Station in September 1985
Agecroft Power Station
Country
  • United Kingdom
Location Greater Manchester, North West England
Coordinates 53°30′55″N2°18′03″W / 53.515401°N 2.300896°W / 53.515401; -2.300896 Coordinates: 53°30′55″N2°18′03″W / 53.515401°N 2.300896°W / 53.515401; -2.300896
StatusDecommissioned
Commission date 1925
Decommission date1993
Operator(s) Salford Corporation Electricity Department
(1925–1948)
British Electricity Authority
(1948–1955)
Central Electricity Authority
(1955–1957)
Central Electricity Generating Board
(1958–1990)
Thermal power station
Primary fuel Coal
External links
Commons Related media on Commons
[ edit on Wikidata]

grid reference SD800021

Agecroft power station was a coal-fired power station between the eastern bank of the Manchester, Bolton and Bury Canal and the western bank of the River Irwell at Pendlebury, near Manchester, England. It operated between 1925 and 1993, and was demolished in 1994. HM Prison Forest Bank has since been built on the site.

Contents

History

Agecroft Hall, an ancient manor house once occupied a site nearby, between Lumns Lane to the west and the Manchester to Bolton railway line and disused Manchester, Bolton and Bury Canal to the east. It was dismantled by a new owner and shipped to Richmond, Virginia in the USA. [1]

The first power station on the site, Agecroft A Power Station, was formally opened by Alderman G. Billington, the Mayor of Salford, on Wednesday 23 September 1925. It was operated by the Salford Corporation Electricity Department. [1] [2] After nationalisation of the British electricity supply industry in 1948 the station was owned and operated by the British Electricity Authority (1948–1955), then the Central Electricity Authority (1955–1957), finally by the Central Electricity Generating Board (1958–1990). [1]

The station was then extended in 1950 with the construction of a B station and in the 1960s a C station. Agecroft B and C power stations were officially opened in 1962 and the event was commemorated with a plaque. [3]

Specifications

A station

The A station used three 12,500 and one 20,000 kilowatt (kW) Metropolitan-Vickers turbo generators to give a total generating capacity of 57,500 kW. These were supplied with steam from six Babcock & Wilcox, 65,000 pounds per hour (8.2 kg/s), and two John Thompson, 80,000 lb/hr (10.1 kg/s) boilers. [4] These operated at 325 psi at 720 °F (B&W) and 780 °F (JT). Following the rebuilding of some of the original chain grate coal fired boilers in the A station as oil fired units the needed extra steam capacity required for the 20,000 kW unit was supplied from the B station extra boiler capacity via a steam line several hundred feet in length. The pressure step down valves were located at the B station [1]

This site still features some original buildings, although most of these are stripped. There was a building marked as a "transformer bay" in site plans, which housed a small control room until recently. This building is also referred to as Agecroft A Substation [5]

Cooling water was obtained from the River Irwell.

The generating capacity and electricity output of Agecroft A is given in the table. [4]

Agecroft A electricity capacity and output
Year195419551956195719581961196219631967
Installed capacity, MW474747474758.158.158.158.1
Electricity output, GWh36.49532.97219.42218.04232.05214.37.31412.93327.174

B and C stations

The B station had four International Combustion Limited pulverised coal boilers rated at 35,000 lb/hr, steam conditions were 620 psi and a super-heater temperature of 538 °C with reheat to 538 °C. [6] The B station used two Metropolitan-Vickers 55 megawatt (MW) generating sets, these were commissioned in December 1950. An extension to 345 MW was authorised in July 1955. [4] The B station had two hyperbolic Mouchel concrete cooling towers each rated for 3.08 million gallons per hour. The generating capacity and electricity output of Agecroft B is given in the table. [4]

Agecroft B electricity capacity and output
Year19541955195619571958
Installed capacity, MW100100100100100
Electricity output, GWh559.116656.936525.917516.723593.020

The C Station used two 124 megawatt (MW) Metropolitan-Vickers hydrogen cooled sets giving a total generation capacity of 358 MW across the B and C stations. [7] The turbines were supplied with steam from two 860,000 lb/hr (108.4 kg/s) International Combustion Limited boilers operating at 1500 psi and 1000 °F (103.4 bar and 538 °C). Agecroft C was one of the CEGB's twenty steam power stations with the highest thermal efficiency; in 1963–4 the thermal efficiency was 3.51 per cent, 32.47 per cent in 1964–5, and 32.79 per cent in 1965–6. [8] The electricity output from the C station was as follows: [8] [9]

Electricity output from Agecroft C
Year1959-601960-11961-21962-31963–41964–51965–61966–671971–21978–91981–2
Electricity supplied, GWh3081,3931,7751,8131,2651,3221,3851,8321,1631,2611,129
Load factor, %4748.561.862.9262.165.068.262.339.442.838.3
Thermal efficiency, %33.1730.6331.4131.4733.5132.4732.7930.1429.3730.4932.13

Operations

A Robert Stephenson & Hawthorn-built 0-4-0ST pauses while shunting waggons at the power station in 1976. UK Agecroft Power Station RSH 0-4-0ST 1976.jpg
A Robert Stephenson & Hawthorn-built 0-4-0ST pauses while shunting waggons at the power station in 1976.

The stations used cooling water from the River Irwell and the B and C stations were cooled by four large natural draft cooling towers situated close to the banks of the Irwell. [10]

Three steam locomotives were built by Robert Stephenson and Hawthorns in Newcastle upon Tyne in 1948 to shunt coal wagons at the A station and later the B and C stations. However, with the nationalisation of the UK's electric supply industry, the locomotives became almost entirely redundant as a conveyor belt was constructed to carry coal directly across Agecroft Road (A6044) and into the station from Agecroft Colliery. [11] The colliery continued to supply the stations until its closure in March 1991. [1] Despite this however, locomotives were still used to shunt waggons of coal to and from the colliery. [12] The surplus of locomotives were sold in 1980s. After being retired in 1980, Agecroft No. 1 was saved from scrapping by being bought by a private owner. It was purchased by the Museum of Science and Industry in Manchester in a dismantled state in 2008, where it underwent a 3-year restoration costing £120,000. [13] [14] Agecroft No. 2 was bought by the Ribble Steam Railway and sent to Southport for restorations in December 1982. [11] Agecroft No. 3 is going under full restoration at the Whitwell & Reepham railway station in Norfolk.

Closure and demolition

Agecroft Colliery was closed in March 1991 and the closure of the power station was announced in November 1992. [12] The station closed in March 1993, and demolition commenced later that year. [15] The cooling towers and two main stacks were demolished on 8 May 1994. Their demolition was delayed because a pair of rare peregrine falcons had nested on the site. [16] HM Prison Forest Bank has since been built on the station's site. [17] It houses category B male offenders and was opened in January 2000. [1]

Sometime in December 2019 or January 2020, Agecroft A Substation was stripped of its Art Deco control panels. The reason is unknown, perhaps this represents a step towards demolition.

Cultural use

In 1983, the stations were the subject of a photograph by British landscape photographer John Davies. [18]

See also

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References

  1. 1 2 3 4 5 6 Agecroft Power Station, site of, Engineering Timelines, archived from the original on 4 April 2012, retrieved 25 November 2011
  2. ↑ Opening Agecroft Power Station. 1925. Retrieved 13 December 2008.
  3. ↑ "Acquisition and Disposal Policy 2005–2009" (PDF). msim.org.uk/. p. 51. Archived from the original (PDF) on 6 January 2009. Retrieved 27 November 2008.
  4. 1 2 3 4 Garrett, Frederick C., ed. (1959). Garcke's Manual of Electricity Supply vol.56. London: Electrical Press. pp. A-27, A-111–112.
  5. ↑ "Agecroft A Primary Substation - photographs of a control room which was stripped December 2019/January 2020". 29 January 2020.
  6. ↑ Handbook of Electricity Supply Statistics 1989. London: The Electricity Council. 1990. p. 4. ISBN   085188122X.
  7. ↑ "The European Fossil-fuelled Power Station Database Used in the SEI CASM Model" (PDF). www.sei.se/. Stockholm Environment Institute. 1996. p. 30. Archived from the original (PDF) on 6 October 2006. Retrieved 25 November 2008.
  8. 1 2 CEGB (1966). CEGB Statistical Yearbook 1964, 1965, 1966, 1972, 1982. London: CEGB. p. 20.
  9. ↑ GEGB Annual report and accounts, various years
  10. ↑ Longhurst, James WS (December 1989). "Oxides of nitrogen in the greater Manchester conurbation, UK". The Environmentalist. Springer Netherlands. 9 (4): 253–260. doi:10.1007/BF02241825. ISSN   0251-1088. S2CID   84658974.
  11. 1 2 "Agecroft No.2". www.ribblesteam.org.uk/. Archived from the original on 24 December 2012. Retrieved 24 November 2008.
  12. 1 2 "Agecroft Profile". homepage.ntlworld.com/. Archived from the original on 9 September 2005. Retrieved 25 November 2008.
  13. ↑ "Appeal to let steam loco ride again". Museum of Science and Industry . Retrieved 27 August 2012.
  14. ↑ "About Agecroft No. 1". Museum of Science and Industry. Archived from the original on 26 June 2012. Retrieved 27 August 2012.
  15. ↑ Keeling, Neal (17 February 2007). "Salford brewery changes Dr Who artwork". www.manchestereveningnews.co.uk/. Retrieved 27 November 2008.
  16. ↑ "Demolition of Agecroft Power Station video footage". ITN News. Archived from the original on 27 September 2007.
  17. ↑ "Forest Bank". hmprisonservice.gov.uk/. Archived from the original on 10 June 2011. Retrieved 27 November 2008.
  18. ↑ Hoppen, Michael. "John Davies". www.michaelhoppengallery.com. Archived from the original on 5 October 2012. Retrieved 27 August 2012.
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