Corrosion product particles in boiling water reactor condensates

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Nuclear Technology; (United States)

OSTI ID:6283795

Hermansson, H P ^[1]; Persson, G ^[2]; Reinvall, A ^[3]

---

1. Studsvik Material AB, Nykoeping (Sweden)
2. Forsmark Nuclear Power Plant, Oesthammar (Sweden)
3. Industrial Power Co. Ltd., Olikiluoto (Finland)

The corrosion products formed in boiling water reactor (BWR) coolant systems cause a wide range of problems due to reduce heat transfer and transportation of radioactivity. It is of prime interest to describe corrosion product properties in order to form a basis for the reduction of their negative influence on plant performance. Corrosion product particle characterization was carried out in connection with a study of precoat filtration of condensate water in eight Swedish and two Finnish BWRs. A variety of different techniques and tools were used in the characterization work. Filtration was used for the capture of particles, and scanning electron microscopy was used for size measurements, surface studies, and analysis of the elements present. The X-ray diffraction technique was used for phase determinations. A wide range of iron-containing particulate material is present in the water of different BWR systems. The corrosion products are strongly dominated by particulate material. Most particles are in the colloidal size range and are composed of small crystallites or amorphous material and normally have a negative surface charge. The largest number of particles in condensates is found in the submicron range. The phase composition varies between drains and condensates. Crystalline phases, such as magnetite, hematite, and lepidocrocite, have been observed in both cases. In condensates, there is a 50/50 relationship by weight between crystalline particles are dominant.

• OSTI ID: 6283795
• Journal Information: Nuclear Technology; (United States), Journal Name: Nuclear Technology; (United States) Vol. 103:1; ISSN 0029-5450; ISSN NUTYBB
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
BWR TYPE REACTORS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMISTRY
COHERENT SCATTERING
CONDENSATES
COOLING SYSTEMS
CORROSION
CORROSION PRODUCTS
DIFFRACTION
ELECTRON MICROSCOPY
ENERGY SYSTEMS
ENERGY TRANSFER
ENRICHED URANIUM REACTORS
ENVIRONMENTAL TRANSPORT
FILTRATION
HEAT TRANSFER
MASS TRANSFER
MICROSCOPY
PARTICLE SIZE
PHASE STUDIES
POWER REACTORS
RADIONUCLIDE MIGRATION
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SEPARATION PROCESSES
SIZE
THERMAL REACTORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS
X-RAY DIFFRACTION