Station design' and layout

available suggests some penalty on performance and increased maintenance attention is incurred.

Gas turbine units can be installed in common build­ ings as conventional fossil-fired units, or can be sup­ plied in individual packaged units ready for installation on a prepared base.

3 Future development options

The CEGB, as a major operating utility, regulady reviews the technical and economic status of the various generating systems which could be available for future use.

The outline reviews discussed in the following sections are obviously related to the current state of development of the CEGB system, and apart from future projects which are actually committed for con­ struction, they must be regarded as somewhat specu­ lative. Hopefully, however, it will illustrate to the reader that the CEGB retains and fosters an active interest in future generation options and expends considerable resources in this direction.

Chapter 2

3.1 Fossil-fired plant

i

The CEGB considers that coaFfired stations will con­ tinue to provide a substantial contribution to UK energy needs for the foreseeable future. A ‘reference design’ for future 2 x 900 MW coal-fired stations, utilising a subcritical steam cycle, was completed in 1989 and, subject to the satisfactory conclusion of siting studies and consent applications, the CEGB hopes to

of new fossil-fired stations is the requirement for flue gas desulphurisation (FGD) equipment to be fitted. This plant, installed to meet increasing environmental concerns, requires additional buildings for the process plant and land for the handling and storage of the feedstocks and by-products of the flue gas treatment. Studies into coal gasification and supercritical steam cycles are continuing for possible future adoption.