How temperature affects pipeline hydrostatic testing
Journal Article
·
· Pipeline Gas J.; (United States)
OSTI ID:6716705
The Pipelines Authority of South Australia offers a specific procedure, based on tables and equations included, to determine how temperature affects the test pressure in a pipeline undergoing hydrostatic testing. A rise in temperature of the pipe wall and test liquid causes circumferential expansion of the pipe wall and also an increase in volume of the test liquid. The combined effect of these expansions has the same effect as pumping additional water into the test section and will cause an increase in pressure. Because the thermal expansion of water varies considerably with temperature, calculations on the effect of temperature can only be meaningful if very great care is taken in temperature measurements. Precautions should be taken to ensure that the effects of sun, wind, rain, and other factors do not invalidate the measurements and that the test section has reached thermal stability before the hold period commences.
- OSTI ID:
- 6716705
- Journal Information:
- Pipeline Gas J.; (United States), Journal Name: Pipeline Gas J.; (United States) Vol. 203; ISSN PLGJA
- Country of Publication:
- United States
- Language:
- English
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