Published October 23, 1982 | Version v1
Patent Metadata-only

Flowing system in a primary coolant circuit for nuclear power plant

Creators

Description

Purpose: To precipitate and remove toxic metal ions at high efficiency from coolants circulating through the primary circuits in a BWR type nuclear power plant. Constitution: A metal ion removing device comprising filter elements made of metal having a greater ionization potential than that of cobalt ions is disposed to the flowing passage of a feedwater system and a recycling system through which coolants containing metal ions are passed. The filter element comprises fine metal wire chips, for example, made of aluminum, zinc and magnesium disposed within a frame which reduce and precipitate cobalt ions contained in the coolant as metallic cobalt on the surface of the metal chips. Since metal ions are precipitated by means of metal ion precipitators disposed to the filter element, the metal can be removed with increased efficiency and may not be dissolved again. (Moriyama, K.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
4 p.
IPC:
Int. Cl. G21C19/30.
IPC
Int. Cl. G21C19/30.
Patent number
JP patent document 57-172294/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
15056737
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ALUMINIUM; BWR TYPE REACTORS; CATIONS; COBALT; COBALT 60; COOLANT CLEANUP SYSTEMS; COOLANTS; DEPOSITION; IONIZATION; IONIZATION POTENTIAL; LIQUID FLOW; MECHANICAL FILTERS; PERFORMANCE; PRIMARY COOLANT CIRCUITS
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHARGED PARTICLES; COBALT ISOTOPES; COOLING SYSTEMS; ELEMENTS; FILTERS; FLUID FLOW; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; IONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; METALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS; YEARS LIVING RADIOISOTOPES

Optional Information

Secondary number(s)
JP patent application 56-57137.