pin holes
- Thread starter jona
- Start date
A housebuilder client of mine has just had to replace, at enormous cost, most of the copper pipework in a block of 54 flats. Leaks appeared less than a year after it was built and every time they replaced one leg of pipe more sprung up elsewhere.
It turned out the whole batch was suffering from tiny pinholes. Almost certainly a manfacturing fault but the lawyers are lovin' it of course.
Maybe not relevant in this case but worth throwing into the equation.
It turned out the whole batch was suffering from tiny pinholes. Almost certainly a manfacturing fault but the lawyers are lovin' it of course.
Maybe not relevant in this case but worth throwing into the equation.
It would be interesting to get some samples of these pipes under a microscope. An ordinary scanning electron version would be the kiddie, to find out the chemical composition around the pinhole site, and whether the rogue elements were present in the rest of the pipe, so far unholed. Sample prep, examination and brief report would take around half a day, so not cost an absolute fortune. Have done some of this sort of stuff, in a former incarnation (metallurgist).
The shape and positions of the holes would be relevant too, as would evidence of overheating, over working of the metal, inclusions, porosity, composition, plus I daresay stacks of other things.
I'm not surprised TTP_designer didn't like my reply, and doesn't answer any criticism. I DO find it repulsive when people who clearly haven't a clue what they're talking about spout off pseudoscientific claptrap. That isn't advice, it's getting the facts wrong. I'm no expert, but for basic stuff it isn't necessary to be one!
"whats the point in people like you on this forum who only thinks their advice is right?" - obviously the bit where I referred to someone else's advice - measuring currents in the pipes- wasn't read?
The shape and positions of the holes would be relevant too, as would evidence of overheating, over working of the metal, inclusions, porosity, composition, plus I daresay stacks of other things.
I'm not surprised TTP_designer didn't like my reply, and doesn't answer any criticism. I DO find it repulsive when people who clearly haven't a clue what they're talking about spout off pseudoscientific claptrap. That isn't advice, it's getting the facts wrong. I'm no expert, but for basic stuff it isn't necessary to be one!
"whats the point in people like you on this forum who only thinks their advice is right?" - obviously the bit where I referred to someone else's advice - measuring currents in the pipes- wasn't read?
PaulAH said:
These wouldn't happen to be in the Preston area....
Not Preston but it was in the NW. Not a lawyer, are you? 
ChrisR: Understood your point about copper not forming its own protective surface compounds but the simple fact that it goes dull must mean it's reacting with something. What would that be? If I remember the chemo rightly, it only oxidises at very high temperatures and verdigris is something else (an acetate??)
ChrisR: Understood your point about copper not forming its own protective surface compounds but the simple fact that it goes dull must mean it's reacting with something. What would that be? If I remember the chemo rightly, it only oxidises at very high temperatures and verdigris is something else (an acetate??)
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