Published November 12, 1993 | Version v1
Patent Metadata-only

BWR type reactor

Creators

Description

An austenite/ferrite stainless steel is used for upstream of a condensate cleanup system and only austenitic stainless steel is used for the downstream. An iron concentration in feedwater is kept lower than 0.1ppb and a volume of a reactor cleanup system is increased, to remove Co before it is deposited on the surface of fuels. With such procedures, any of an ion 60Co concentration and a crud 60Co concentration in coolants can be kept low, thereby enabling to suppress radiation dose rate on the surface of equipments and pipelines. (T.M.)

Availability note (English)

Available from JAPIO. Also available from EPO.

Additional details

Publishing Information

Imprint Pagination
6 p.
IPC:
Int. Cl. G21D1/00; G21C19/307; G21D1/02; G21D3/08.
IPC
Int. Cl. G21D1/00; G21C19/307; G21D1/02; G21D3/08.
Patent number
JP patent document 5-297187/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
25047638
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
AUSTENITIC STEELS; BWR TYPE REACTORS; COBALT 60; CONTROL; COOLANT CLEANUP SYSTEMS; COOLANTS; FEEDWATER; FERRITE; IMPURITIES; RADIATION DOSES; REMOVAL
Descriptors DEC
ALLOYS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ADDITIONS; COBALT ISOTOPES; ENRICHED URANIUM REACTORS; HYDROGEN COMPOUNDS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IRON ALLOYS; IRON BASE ALLOYS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; OXYGEN COMPOUNDS; POWER REACTORS; RADIOISOTOPES; REACTORS; STEELS; THERMAL REACTORS; WATER; WATER COOLED REACTORS; WATER MODERATED REACTORS; YEARS LIVING RADIOISOTOPES

Optional Information

Secondary number(s)
JP patent application 4-104554.