Identification of the chemical inventory of different paint types applied in nuclear facilities
Journal article, 2013

The floors, concrete walls and many of the metal surfaces in nuclear power plant containments are coated with zinc primers or paint films to preserve the metal surfaces and simplify decontamination in the containment after the occurrence of a severe nuclear incident or accident. A chemical examination of paint films from different nuclear installations out of operation, as well as current operating ones, reveals that different types of paints are used whose composition can vary significantly. Results obtained for one type of paint at a certain nuclear site are in most cases unlikely to be comparable with sites painted with another type of paint. During normal operation and particularly during nuclear accidents, the paints will degrade under the high temperature, steam and irradiation influence. As paint and its degradation products can act as sources and depots for volatile iodine compounds, the type and aging conditions of the paint films will have a significant impact on the source term of the volatile fission product iodine. Thus, great care should be taken when extrapolating any results obtained for the interaction of radioactive iodine with one paint product to a different paint product. The main focus of the study is a comparison of the chemical profile of paint films applied in Swedish nuclear power plants. Teknopox Aqua V A, an epoxy paint recently used at Ringhals 2, and an emulsion paint used in the scrubber buildings of Ringhals 1-4 are compared with a paint film from Barseback nuclear power plant unit 1 that had been aged under real reactor conditions for 20 years. In addition, two paint films, an emulsion and a gloss paint, used in an international nuclear fuel reprocessing facility, are compared with the paints from the Swedish nuclear power plants.

mass-spectrometric analysis

Organic iodides

Iodine

iodine

ozone

Methyl iodide

Volatile

Epoxy paint

Containment

pyrolysis

melamine

Severe nuclear accidents

Author

Sabrina Tietze

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Mark Foreman

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Christian Ekberg

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

B. E. van Dongen

University of Manchester

Journal of Radioanalytical and Nuclear Chemistry

0236-5731 (ISSN) 1588-2780 (eISSN)

Vol. 295 3 1981-1999

Subject Categories

Chemical Sciences

DOI

10.1007/s10967-012-2190-3

More information

Latest update

2/28/2018