No relationship.....temper bead is a welding process.........hot-tapping
is a mechanical process, which involves drilling into a vessel or pipeline!
temper bead is the welding process usually ( but not always ) employed
when welding the hot tap fittings (usually weldolets, split tee's
etc....) onto the vessel or pipeline as part of the hot tap process.
As regards qualifying welders, you should be very careful here, because
depending on service, this can be a hugely critical operation, and doing
it wrong can have catastrophic results. Its a while since I have done
any but as far as I can remember the best specs are British Gas (
Transco ) PS-P2 & PS-P9
regards
Declan
On 03/10/2010 11:13, arvinda shan wrote:
> Dear all,
> What is the relation between temper bead and hot tapping? Is there any
> specific procedure to qualify for hot tapping or only welders to
> qualify downhill progression?
> arvinda
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