Published June 30, 1983 | Version v1
Patent Metadata-only

Method of operating a radioactive liquid waste concentrating apparatus

Creators

Description

Purpose: To suppress corrosions to the stainless steel materials by adjusting the pH value of liquid in a concentrating apparatus. Method: The radioactive liquid waste concentrating apparatus comprises a device for receiving and neutralizing radioactive liquid wastes and an evaporative concentrating device for radioactive liquid wastes. An excess sodium hydroxide is supplied to the device for receiving and neutralizing radioactive liquid wastes to adjust the pH value to greater than 10. Particularly, in order to keep the pH value near the concentrating device to greater than 10, sodium hydroxide (or further H2SO4) is added in a conventional manner to a liquid waste neutralizing tank so as to increase the pH value in the liquid waste neutralizing tank and the pH value in the concentrating device to greater than 10 previously, to thereby adjust the pH values therein. (Kawakami, Y.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
5 p.
IPC:
Int. Cl. G21F9/08.
IPC
Int. Cl. G21F9/08.
Patent number
JP patent document 58-109894/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
16065076
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ADDITIVES; CORROSION PROTECTION; EVAPORATORS; LIQUID WASTES; OPERATION; PH VALUE; RADIOACTIVE WASTE PROCESSING; SODIUM HYDROXIDES; STAINLESS STEELS; SULFURIC ACID
Descriptors DEC
ALKALI METAL COMPOUNDS; ALLOYS; CARBON ADDITIONS; HIGH ALLOY STEELS; HYDROGEN COMPOUNDS; HYDROXIDES; INORGANIC ACIDS; IRON ALLOYS; IRON BASE ALLOYS; MANAGEMENT; OXYGEN COMPOUNDS; SODIUM COMPOUNDS; STEELS; SULFUR COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES

Optional Information

Secondary number(s)
JP patent application 56-212305.