Embedded Copper tube repair Method
Embedded Copper tube repair Method
(OP)
Hello all,
We have a 1” diameter copper (ASTM B88 Type K) line embedded in mass concrete that is part of a Piezometer system that is not holding pressure in a hydro dam project.
Prior to concrete placement it was tested and held a test pr of 290psi, but post concrete placement the pressure quickly falls to 125psi, then gradually to 0.
Total length is about 30 meters, with 6 nos of 1" elbows - so we are expecting the leak somewhere around first 15 meters.
As this is embedded no way knowing where the leaks are - so looking for an expertise, suggestions or experience in dealing such situation
We have a 1” diameter copper (ASTM B88 Type K) line embedded in mass concrete that is part of a Piezometer system that is not holding pressure in a hydro dam project.
Prior to concrete placement it was tested and held a test pr of 290psi, but post concrete placement the pressure quickly falls to 125psi, then gradually to 0.
Total length is about 30 meters, with 6 nos of 1" elbows - so we are expecting the leak somewhere around first 15 meters.
As this is embedded no way knowing where the leaks are - so looking for an expertise, suggestions or experience in dealing such situation
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RE: Embedded Copper tube repair Method
RE: Embedded Copper tube repair Method
RE: Embedded Copper tube repair Method
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P.E. Metallurgy, Plymouth Tube
RE: Embedded Copper tube repair Method
What pressure range is actually required for the use of the piezometer system? Water exerts a pressure of ~0.43 lb/in2 per foot of static pressure, so even 100ft (~30m) of head should only need to resist ~43 psi, and I would expect the concrete surrounding the pipe to provide that easily.
I would at least look into the cost to abandon the pipe and install another instrument to compare against the potential cost of rehabilitation/repair measures.