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RE: HAS Weld Symbol[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: HAS Weld Symbol
- From: Harold Sprague <spraguehope(--nospam--at)hotmail.com>
- Date: Wed, 7 May 2008 18:18:21 +0000
There is more than what I present here.
There are 2 general types of testing. There is testing done for "Qualification" and for "Production". "Inspection" is a separate item.
Qualification requires bending 10 studs with a pipe or hammer 30 degrees back and forth until the stud fails. The failure is supposed to be in the stud and not the weld.
Production requires that at the start of each shift or day's work 2 studs are to be bent 30 degrees.
Inspection may required bending a stud at his discretion 15 degrees.
The Harold Sprague method is to take a sledge hammer and bang it on the studs as I walk. You should hear a ping when it hits. If you hear a thud, you probably have a bad weld. Bang on it to bend it to about 15 degrees. Bend about every stud when you feel frustrated about one thing or another. About 1 in 10 is if you are feeling feisty and overly exposed to rap music. About 1 in 20 if you are in a mellow Mantovanie mood. As you can tell it is arbitrary unless your specification is more restrictive.
Another good source is:
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