Published April 1984 | Version v1
Miscellaneous Restricted

Experimental investigations on fission product release (especially iodine and cesium) at design basis accidents. Part 1

Creators

  • 1. Kraftwerk Union A.G., Erlangen (Germany, F.R.). Hauptabteilung Radiochemie
  • 2. Kraftwerk Union A.G., Erlangen (Germany, F.R.). Abt. Radiochemie
  • 3. Kraftwerk Union A.G., Erlangen (Germany, F.R.). Abt. Labor Waermetechnik
  • 4. Kraftwerk Union A.G., Erlangen (Germany, F.R.). Abt. Radiologie

Description

By way of large-scale pressure release tests, the carry-over of non-volatile fission products (I, Cs) by droplets dissolved in PWR coolant after differential pressure line failure in the annulus was measured. In order to simulate the fission product carry-over, cesium ions (CsNO3) were used as tracer material. The cesium carry-over was distinctly below 0.5% as compared to the cesium amount which had entered the ruptured area. The results show that the calculatory basis outlined in the regulatory guide lines of the Federal Ministry of the Interior considerably overestimate the iodine and cesium fission product release. (orig./HP)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Anhand von Druckentlastungsversuchen im Technikumsmassstab konnten experimentelle Erkenntnisse zum Tropfenaustrag im Primaerkuehlmittel von DWR geloester nichtfluechtiger Spaltprodukte (I, Cs) nach einem Wirkdruckleitungsbruch im Ringraum erhalten werden. Als Tracersubstanz dienten Caesium-Ionen (CsNO3) zur Simulation des Spaltproduktaustrages. Der gemessene Caesium-Austrag liegt deutlich unterhalb 0,5% bezogen auf die in den Bruchraum eingestroemte Caesium-Masse. Damit wurde gezeigt, dass die in den Stoerfall-Leitlinien des BMI angesetzten Berechnungsgrundlagen die Freisetzung der Spaltprodukte Iod und Caesium betraechtlich ueberschaetzen. (orig./HP)

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Additional details

Additional titles

Subtitle (English)
Final report
Original title (German)
Experimentelle Untersuchungen zur Abgabe von Spaltprodukten (insbesondere von Jod und Caesium) bei Auslegungsstoerfaellen. Teilvorhaben 1
Original subtitle (German)
Abschlussbericht.

Publishing Information

Imprint Pagination
160 p.
Report number
INIS-mf--10294

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
18014536
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
CESIUM; CONTAINMENT; DESIGN BASIS ACCIDENTS; FISSION PRODUCT RELEASE; IODINE; PRESSURE RELEASE; PWR TYPE REACTORS; REACTOR SAFETY EXPERIMENTS; SIMULATION
Descriptors DEC
ACCIDENTS; ALKALI METALS; ELEMENTS; ENRICHED URANIUM REACTORS; HALOGENS; METALS; NONMETALS; POWER REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Contract/Grant/Project number
Contract BMFT 1500 658/5