Since we're in a lull in the action, I've had some concerns about
some things I've lately seen in print on boilers, specifically testing
pressures, and my concern is that very misleading messages are being sent
by this and those who don't know better will take this to be good practice,
or
Hi Harry
I could not agree more. Even elastic will only stretch to a certain
point to return to its original length one over stretched it is always
to slack.
I remember the classic Cockenzie boiler test in Scotland a number of
years ago I think the plate was 8 inch thick if my memory serves me
I think that there are possibly three reasons that the units are tested to
such pressures that don't necessarily have any metallurgical bearing:
1) Users may have a tendency to raise the pressure setting on their pressure
relief valves above what the factory intends. Since the majority of prv's
At 12:09 PM 3/14/05 -0600, you wrote:
1) Users may have a tendency to raise the pressure setting on their
pressure relief valves above what the factory intends.
A bad habit to get into, but even so this cannot justify a test
standard of 300% of WP.
2) Pressure gauges are not normally
From: Harry Wade [EMAIL PROTECTED]
Reply-To: sslivesteam@colegroup.com
To: Multiple recipients of sslivesteam sslivesteam@colegroup.com
Subject: Boiler commentary
Date: Mon, 14 Mar 2005 09:54:07 -0600
Since we're in a lull in the action, I've had some concerns about
some things I've lately seen
