Published February 1985 | Version v1
Report Restricted

Investigation of aerosol formation during passive afterheat removal

Creators

Description

For the emergency cooling system of a storage facility for high-level radioactive waste of a reprocessing plant, a test rig for studying aerosol formation on a reduced scale has been developed. The vapour of the boiling solution of a waste tank is led through a heat exchanger, the condensate being fed back to the tank. The next step is an NOx scrubber. The heat from the condenser is led to an air cooler in a natural-draught stack. At four positions in this system, aerosol samplers are installed. Ca(NO3)2 serves as the aerosol indicator and is analysed by means of atomic emission spectroscopy. (PW)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Fuer das Notkuehlsystem eines Lagers fuer hochaktive Abfaelle einer Wiederaufarbeitungsanlage wurde ein Teststand fuer die Aerosolbildung im verkleinertem Massstab errichtet. Der Dampf der siedenden Loesung des Abfallbehaelters wird ueber einen Waermetauscher gefuehrt. Das Kondensat laeuft in den Behaelter zurueck. Weiter ist ein NOx-Waescher nachgeschaltet. Die Waerme vom Kondensator wird an einem Luftkuehler in einem Naturzugkamin uebertragen. In dieses System wurden 4 Probenahmestellen fuer den Aerosolaustrag eingerichtet. Als Aerosol-Indikator dient Ca(NO3)2 welches mit Atom-Emissionsspektroskopie analysiert wird. (PW)

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Additional details

Additional titles

Original title (German)
Untersuchung ueber die Aerosolbildung bei der passiven Nachkuehlung

Publishing Information

Imprint Pagination
14 p.
Report number
RCM--01385

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
18064984
Subject category
S61: RADIATION PROTECTION AND DOSIMETRY;
Descriptors DEI
AEROSOLS; AFTER-HEAT REMOVAL; CALCIUM NITRATES; COOLING SYSTEMS; FUEL REPROCESSING PLANTS; HIGH-LEVEL RADIOACTIVE WASTES; OFF-GAS SYSTEMS; RADIOACTIVE WASTE STORAGE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; COLLOIDS; DISPERSIONS; MANAGEMENT; MATERIALS; NITRATES; NITROGEN COMPOUNDS; NUCLEAR FACILITIES; OXYGEN COMPOUNDS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; SOLS; STORAGE; WASTE MANAGEMENT; WASTE STORAGE; WASTES