Report on the Study to Evaluate Air Pollution Episodes and Intermittent Control Measures

  • David J. Moore
  • Assaad E. Saab
Part of the NATO · Challenges of Modern Society book series (NATS, volume 10)


Discussions within COGAR during 1981 indicated that collective information on the types of meteorological conditions when large single sources like power stations contributed to pollution episodes, the frequency with which they occurred, and the implications for intermittent control procedures was important for all member utilities. This paper summarises the findings of a working group set up by COGAR to study these problems.

Results indicate that most episodes are still attributable to low or medium level sources rather than large industrial plant. The worst cases in flat terrain where power stations do contribute for many hours involve either stagnant conditions persisting for more than 24 h or a steady wind blowing consistently from an area containing several stations. Single stations can present problems when topography interferes with dispersion or stack height is inadequate for the emission.

Data on the frequency with which episodes occur and the probability of predicting these conditions correctly are needed to evaluate whether intermittent control measures like fuel switching are an effective option. The study showed that it is necessary to measure the vertical structure of the atmosphere as well as ground level concentrations of pollutant. In complicated topography, measurements of the three-dimensional distribution of the pollutant must also be made.


Plume Height Pollution Episode Plume Rise Ground Level Concentration Intermittent Control 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bacci, P., Carboni, G. and Marzorati, A., 1982. The evaluation of pollution episodes in the Po Walley. ENEL-CRTN.Google Scholar
  2. Esteban, F., 1983a. General description of situation leading to pollution episode. ASINEL, Ref: 1032-CDR.Google Scholar
  3. Esteban, F., 1983b. SO2 immission levels around a 148 MW power plant. Madrid 18/11/1983.Google Scholar
  4. Esteban, F., 1983c. Experimental analysis of the incidence of SO2 emission of a power plant in an industrialised area. Madrid 18/11/1983.Google Scholar
  5. Lejeune, P., 1983. Air quality: the Belgium situation in a nutshell. LABORELEC.Google Scholar
  6. Lejeune, P., 1984. Case study of the contribution of two Belgium power unit to pollution episodes. LEJ/sd dated 20/02/1984.Google Scholar
  7. Moore, D.J., 1982. Validation of a Gaussian plume model for calculating averages and frequencies of concentrations around tall stacks. CEGB Laboratory Note TPRD/L/2553/N82.Google Scholar
  8. Moore, D.J., 1983. Conditions in which power stations contribute to high ground level SO2 concentration. CEGB Memorandum TPRD/L/AP/0092/M83?Google Scholar
  9. Steenkist, R., 1983. Meteorological parameters during high SO2 background concentrations. KEMA Report 9606–83.Google Scholar
  10. van Duuren, H., 1983. Brandstsoffeninzetplan voor centrales. Analyse van de periode 1981–1982, I en II. KEMA Report 6456–83.Google Scholar
  11. van der Kooij, van Duuren, H. and Erbring, J.J., 1983. Environmental consequences of the use of clean fuels for power production during air pollution episodes. KEMA Report 6422–83 M0-Luchtv.Google Scholar

Copyright information

© Springer Science+Business Media New York 1986

Authors and Affiliations

  • David J. Moore
    • 1
  • Assaad E. Saab
    • 2
  1. 1.CEGBUK
  2. 2.Electricite de FranceFrance

Personalised recommendations