Bold Power Station refers to a series of two

coal-fired power stations A coal-fired power station or coal power plant is a thermal power station which burns coal to generate electricity. Worldwide, there are about 8,500 coal-fired power stations totaling over 2,000 gigawatts Nameplate capacity, capacity. They ...

Bold In typography, emphasis is the strengthening of words in a text with a font in a different style from the rest of the text, to highlight them. It is the equivalent of prosody stress in speech. Methods and use The most common methods in ...

near

St Helens, Merseyside St Helens () is a town in Merseyside, England, with a population of 102,629. It is the administrative centre of the Metropolitan Borough of St Helens, which had a population of 176,843 at the United Kingdom Census 2001, 2001 Census. St Helens i ...

North West England North West England is one of nine official regions of England and consists of the ceremonial counties of England, administrative counties of Cheshire, Cumbria, Greater Manchester, Lancashire and Merseyside. The North West had a population of ...

. They were closed, decommissioned and demolished between 1981 and 1992, and a housing estate now occupies the site.

History

Bold A and B Power Stations were coal fired, with a direct coal conveyor belt link from a washery at the colliery. This fed either directly to coal bunkers in both stations or to a stocking area. The extensive rail sidings were utilised for coal delivery, either from Bold Colliery or from other collieries via the main Liverpool to Manchester Lines. The coal from Bold Colliery was deep mined and therefore costly to recover. In later years, due to commercial reasons, the main coal supply became mostly by road from either Yorkshire or Scotland. The 'A' power station had an installed capacity of 120 MW. It consisted of four 30 MW two-cylinder

turbine A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating ...

alternator An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature.G ...

s manufactured by

Metropolitan-Vickers Metropolitan-Vickers, Metrovick, or Metrovicks, was a British heavy electrical engineering company of the early-to-mid 20th century formerly known as British Westinghouse. Highly diversified, it was particularly well known for its industrial el ...

and Associated Electrical Industries (AEI). No.3 M/C was installed with the first direct water-cooled alternator. Steam was supplied from four

Yarrow & Co ''Achillea millefolium'', commonly known as yarrow () or common yarrow, is a flowering plant in the family Asteraceae. Other common names include old man's pepper, devil's nettle, sanguinary, milfoil, soldier's woundwort, and thousand seal. The ...

. coal-fired

boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, centr ...

s with tangentially fired tilting pulverized fuel burners, with 3no type LM13 table mills made by International Combustion of

Derby Derby ( ) is a city and unitary authority area in Derbyshire, England. It lies on the banks of the River Derwent in the south of Derbyshire, which is in the East Midlands Region. It was traditionally the county town of Derbyshire. Derby gain ...

. The 'B' power station was installed with three 60 MW machines (equalling 180 MW total capacity). It used a central unit control system with the turbine/hydrogen cooled alternators manufactured by the

General Electric Company The General Electric Company (GEC) was a major British industrial conglomerate involved in consumer and defence electronics, communications, and engineering. The company was founded in 1886, was Britain's largest private employer with over 250 ...

(GEC). As with 'A' power station, no.3 alternator was a prototype direct water-cooled machine. The coolant water was fed via glass tubes on the

three-phase Three-phase electric power (abbreviated 3φ) is a common type of alternating current used in electricity generation, transmission, and distribution. It is a type of polyphase system employing three wires (or four including an optional neutral r ...

connections. Each unit had boilers manufactured by

John Thompson John Thompson may refer to: Academics * J. A. Thompson (1913–2002), Australian biblical scholar * John D. Thompson (1917–1992), nurse and professor at the Yale School of Public Health * John G. Thompson (born 1932), American mathematician * ...

Wolverhampton Wolverhampton () is a City status in the United Kingdom, city, metropolitan borough and administrative centre in the West Midlands (county), West Midlands, England. The population size has increased by 5.7%, from around 249,500 in 2011 United ...

, each using two suction ball mills each with two exhausters, these feeding to twelve front wall pulverized fuel burners. The boilers were rated at 69 kg/s and fed steam at 900 psi/900 degrees Fahrenheit (62.06 bar and 482 °C) directly to each turbine/alternator. The electricity output from Bold A was as follows:GEGB ''Annual report and accounts'', various years The electricity output from Bold B was as follows: The Bold area was the site of Bold Colliery, with Bold A and B Power Stations on adjacent land. These power stations had a total electricity generating capacity of 300

megawatt The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after Jame ...

s (MW). At the time of completion, between 1958 and 1960, they were the largest such generating facility in the north west. Bold "A" Station closed on 26 October 1981. Bold "B" continued to run until the late 80's after it was privatised from the Central Electricity Generating Board to

National Power National power is defined as the sum of all resources available to a nation in the pursuit of national objectives. Assessing the national power of political entities was already a matter of relevance during the classical antiquity, the middle ages ...

. The B Station closed in 1991 and was soon after demolished, with the site’s 3 cooling towers and chimney demolished on the 29th March 1992. The site has since been redeveloped for housing and public open spaces. Other industry in the area included a large engineering works which is now an

industrial estate An industrial park (also known as industrial estate, trading estate) is an area zoned and planned for the purpose of industrial development. An industrial park can be thought of as a more "heavyweight" version of a business park or office park, ...

References

{{North West Power Stations Buildings and structures in the Metropolitan Borough of St Helens Coal-fired power stations in England Power stations in North West England

History

See also

References