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The ISP 34 (International Standard Problem) was the first CSNI-ISP dedicated to FP (fission product) transport. The aim was to assess the computer codes modelling FP behaviour, in the primary circuit and in the containment, against two experiments performed in the Falcon facility at the AEA Technology Centre, Winfrith (UK). The primary circuit consisted of a heated silica tube and a stainless steel pipe. The former was a 48 cm length tube, whose diameter changed from 3.5 cm to 2.5 cm at 10 cm from the entrance. A thermal gradient was maintained by varying wall temperature from 700 C at the inlet to 150 C at the outlet. The contribution of JRC Ispra to the ISP 34 is presented and summarised in this report. The major interest in these tests was the influence of chemistry on FP transport through the silica tube, so only this part of the circuit was considered.

Additional information

Bibliographic Reference: Paper presented: 20th Reunion Anual de la Sociedad Nuclear Espanola, Cordoba (ES), October 26-28, 1994
Availability: Available from (1) as Paper EN 38541 ORA
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