oa Civil Engineering = Siviele Ingenieurswese - Surge-induced failure in fibre-cement pipelines due to sudden air release



Attention is drawn to the possible serious consequences of a sudden release of air during both the testing and operation of fibre-cement pipelines. The first part of the paper deals with failures during watertightness tests, highlighting important factors relating to such tests. The second part of the paper presents laboratory test results and gives an indication of the magnitude of induced pressure spikes due to sudden air release. Recommendations are made for the location of de-aeration points to limit air-release induced overpressures.


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