If it looks good enough to reuse, then chimney sweep out the pipe
with a wire brush after it is dry. Scale might tend to slough off in
large chunks after it has dried. I've seen this happen with a 25 year
old cooling tower piping system after it was brought back up to
service after modification. That system had brand new dirt legs
installed at the tower base to catch this stuff, of which there was
an amazing amount btw. Sprinkler systems don't really have these dirt
legs for this.
Allan Seidel
St Louis, MO
On Jun 17, 2007, at 3:13 PM, [EMAIL PROTECTED] wrote:
Dear forum,
What is the consensus about reusing existing sprinkler piping in a
25 year
old system. The question here is, what is the typical design for
providing
new pipe and sprinklers in some parts of a building but using the
existing
pipe for the rest of the system and still warranting the entire
system -
existing and new?
What about taking out existing 25 year old pipe and relocating it
for use
in another area?
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