Notes and news — December 1992
In this issue:
Hospitals at risk
- Hospitals at risk
- GLIAS cruise
- Croydon B power station
- Greenwich power station
- Visit to Stansted Airport
- The Longford and Duke of Northumberland's rivers
- Hydraulic organ blowers at Union Chapel
- City of London coal duty posts
- English Heritage
- Anthrax at King's Cross
- GLIAS visit to Royal Arsenal
Croydon B power station
(GLIAS Newsletter October 1990)
Greenwich power station
Earlier this year Scottish Power proposed to enlarge the generating capacity at the present LT Greenwich Power Station which is equipped with gas turbines and can supply electricity at 22kV for underground railways in central London at peak periods. Control is from the LT generating station at Lots Road.
Scottish Power proposals are to install two 123 MW combined cycle gas turbines (CCGT) driving generators; the exhaust gasses being passed through a heat recovery steam generator (HRSG) system. This would provide enough steam to drive a third 123 MW generator by means of a steam turbine, giving the new station a total capacity of 370 MW. The present LT load would be provided for from this output.
Natural gas would be used for fuel as at present, being drawn from the British Gas plc Regional Transmission System. The gas will need to be pressurised for the gas turbines. To cover possible interruption of mains gas supply distillate fuel oil would be used as an alternative, delivered direct by ship to the Power Station's Thameside wharf. Coal was used for fuel at Greenwich until the late 1960s and surviving buildings and structures of the coal handling system would be demolished.
The present main building dates from 1902-9 and would house most of the new equipment. The existing four 56 metre high chimneys would discharge the exhaust from the HRSGs with an additional six metres being added on top to improve dispersion. Cooling water would be taken from the Thames via a new tunnel extending 70 metres from the embankment. The water is to be returned to the River via a new outfall with a rise in temperature of not more than 12°C.
Additional land to the North East would need to be acquired from Morden College, who own it. Part of Hoskins Street would be permanently closed. It is understood there have been local objections on environmental grounds. The new generating station would have a power output just over twice that of the old Battersea B station but contemporary fossil fuel power stations have an output about six times that of Battersea B. Bob Carr
Visit to Stansted Airport
The Longford and Duke of Northumberland's rivers
Hydraulic organ blowers at Union Chapel, Compton Terrace, Islington
City of London coal duty posts
(GLIAS Newsletter April 1992)
Anthrax at King's Cross
GLIAS visit to Royal Arsenal
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© GLIAS, 1992