Published March 22, 1991 | Version v1
Patent Metadata-only

Pressure control system in a tank where a periodic dissolution by chemical reaction is taking place

Creators

Description

During introduction of spent fuel into hot nitric acid there is a peak of pressure followed by pressure decrease after recombination of gases. To maintain a slight depressurization the container is connected to two gas injection systems. The first is controlled by a vane for a fast flow rate of injected gas and the second with a higher time constant for more important flow rate

Availability note (English)

Available from Institut National de la Propriete Industrielle, Paris (France).

Abstract (French)

Lors de l'introduction des troncons de combustible irradies dans l'acide nitrique il se produit un pic de pression suivi d'une baisse de pression par recombinaison des gaz. Pour maintenir une legere depression l'enceinte est reliee a deux circuits d'injection de gaz. Le premier est pilote par une vanne pour faire varier rapidement le debit de gaz injecte et le deuxieme est commande par une seconde vanne de constante de temps superieure et de debit plus important

Additional details

Additional titles

Original title (French)
Systeme de regulation de pression dans une enveloppe siege d'une reaction chimique periodique de dissolution
Augmented title (English)
spent fuel dissolution

Publishing Information

Imprint Pagination
12 p.
IPC:
Int. Cl. G21c19/46.
IPC
Int. Cl. G21c19/46.
Patent number
FR patent document 2652192/A/

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
23052450
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
DISSOLUTION; PRESSURE CONTROL; PRESSURE SUPPRESSION; REPROCESSING; SPENT FUELS
Descriptors DEC
CONTROL; ENERGY SOURCES; FUELS; MATERIALS; NUCLEAR FUELS; REACTOR MATERIALS; SEPARATION PROCESSES

Optional Information

Secondary number(s)
FR patent application 8912183.