Boric acid application guidelines for intergranular corrosion inhibition: Topical report

Technical Report · Tue Dec 01 00:00:00 EST 1987

OSTI ID:5626915

Hermer, R E

A significant fraction of the operating Pressurized Water Reactor steam generators have used or are using boric acid as an inhibitor to control stress corrosion cracking, intergranular attack, or denting. Boric acid is applied via crevice flushing, low power soaks, on-line, or using a combination of these methods. When boric acid is used it is important to have knowledge about its chemical and physical properties, its effect on corrosion, and how it should be correctly applied. The data on these subjects may be found in a diversity of sources, which are often not readily available or convenient to use. This document has been prepared to be a comprehensive treatise on boric acid relevant to its application in nuclear steam generators. 49 refs., 31 figs., 16 tabs.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Service Technology Div.
• OSTI ID: 5626915
• Report Number(s): EPRI-NP-5558; ON: TI88920134
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
PWR TYPE REACTORS
STEAM GENERATORS
CORROSION INHIBITORS
INTERGRANULAR CORROSION
STRESS CORROSION
BORIC ACID
INCONEL ALLOYS
SECONDARY COOLANT CIRCUITS
WATER CHEMISTRY
ALLOYS
BOILERS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM ALLOYS
COOLING SYSTEMS
CORROSION
ENERGY SYSTEMS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NICKEL ALLOYS
NICKEL BASE ALLOYS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
360105 - Metals & Alloys- Corrosion & Erosion