Hello everyone! Could I use gas instead of water for a hydro test on 46" crude oil transportation pipelines, considering the requirements of API 1110?
thanks in advance.
That's a large pipeline and will contain a fair amount of energy which if the pipeline fails could result in a significant crater. you would really need to do your homework on looking at the impact of a failure, whether you can create an exclusion zone ( prob >100m ) / stop vehicles crossing it, that sort of thing.
Many codes and companies and safety authorities won't allow it.
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