HTGR Knowledge Base

Conference Article: Investigation on the depressurization behaviour of a typical HHT thermal insulation

Weber, H. (Eidgenoessisches Inst. fuer Reaktorforschung, Wuerenlingen (Switzerland))

Abstract

The measurements of the depressurization behaviour of a fibre-type thermal insulation have been reproduced with sufficient accuracy by a simple numerical lumped parameter model. Two empirical parameters of the model had to be fitted and the same set of these two parameters - the effective surfaces of the flow across the perforated tube and the depressurization holes - could be used to reproduce both the experimental results with air and helium. This is in accordance with the results of a dimensional analysis.

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key words: depressurization; helium cooled reactors; htgr type reactors; materials testing; mathematical models; thermal insulation; transients; gas cooled reactors; graphite moderated reactors; reactors; testing
Reference:
International Atomic Energy Agency, Vienna (Austria). International Working Group on Gas-Cooled Reactors. Specialists meeting on gas-cooled reactor safety and licensing aspects, Lausanne, Switzerland, 1-3 September 1980. Summary report. Jan 1981
International Atomic Energy Agency, Vienna (Austria). International Working Group on High-Temperature Reactors.
IWGGCR--1, pp:154-162