why is a pipeline backfilled before hydro-testing?

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why is a pipeline backfilled before hydro-testing?

2007-03-06 20:35:53 · 2 answers · asked by wisdom1234 1 in Science & Mathematics ➔ Engineering

2 answers

To purge air, and oxygen in it, that may cause an explosion.

2007-03-06 20:46:09 · answer #1 · answered by sciquest 4 · 0⤊ 0⤋

To keep it from moving, perhaps catastrophically, when pressure tested. Piping is usually center loaded, with the joints exposed so leaks can be observed.

2007-03-07 21:34:41 · answer #2 · answered by Ed 6 · 0⤊ 0⤋