On Fri, 28 Aug 2009 22:08:51 -0500, "Martin H. Eastburn"
wrote:

I find the pure water - attacks ? I don't think so.

DI water attacks copper and copper based alloys quite aggressively.
Austenitic stainless steels and nickel base alloys are generally OK,
though I have experience with Inconel immersion heaters corroding
surprisingly fast, even at relatively low temps (140F) in DI water.


Chlorine and such will. H2O is stable. If they have
electric current flowing in the pipes - possible - it can
break down H2O into hydrogen gas and oxygen gas.
The hydrogen will attack steel. The oxygen will attack
almost anything.

I bet they had a mixed iron and copper system and did themselves
in without using current breaks - plastic joints.

The absence of ions would rule out galvanic corrosion, no?


Martin

Wes wrote:
"Tim" wrote:

IIRC,
our machines had to use deionized water.

I heard a horror story where a facility put in a reverse osmosis system to take all
impurites out of the feed water. Then they started having even more problems. Really
pure water attacks the alloying elements in the plumbing.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

--
Ned Simmons