Steam purity in PWRs
Impurities enter the secondary loop of the PWR through both makeup water from lake or well and cooling-water leaks in the condenser. These impurities can be carried to the steam generator, where they cause corrosion deposits to form. Corrosion products in steam are swept further through the system and become concentrated at the point in the low-pressure turbine where steam begins to condense. Several plants have effectively reduced impurities, and therefore corrosion, by installing a demineralizer for the makeup water, a resin-bed system to clean condensed steam from the condenser, and a deaerator to remove oxygen from the water and so lower the risk of system metal oxidation. 5 references, 1 figure.
- OSTI ID:
- 6746258
- Journal Information:
- EPRI J.; (United States), Journal Name: EPRI J.; (United States) Vol. 7:8; ISSN EPRJD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
CHEMISTRY
CORROSION PROTECTION
ENVIRONMENTAL QUALITY
PWR TYPE REACTORS
REACTORS
STEAM QUALITY
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS
WATER QUALITY