[MW:5644] Re: Recommended practice for the Repair of Weld joint Edge preparations

Dear Haseeb,

In general you have to prepare your weld prefab according to your
qualified WPS / PQR with some small tolerances. If the actual
procedure used does not met those requirements in my opinion you
choose the wrong way of preparing your weld edges, especially when you
are talking about cuts of a few millimetres.

I know that often especially in shipbuilding companies face problems
with dimensions of weld preparation, in such cases they normally
buttering the weld edge and grind / machine them afterwards in order
to create the required weld preparation according to WPS. For this
procedure you will need approval of your client and/or Notified Body
(if applicable) and in my opinion when you have a few millimetres
depth to repair you need to re qualify your WPS with a test specimen
that also consist this buttering weld on the edges.

As QC inspector I have never seen / accept such defects repaired by
grinding them smooth and weld it during the actual Buttweld procedure
according to WPS.

But as mentioned before you have to confer this with your client or
local inspector responsible for the job.

Best Regards,

Herman Pieper

On 17 jun, 21:18, Haseeb <haseeb...@gmail.com> wrote:
> Carbon Steel plates are cut and their edges are prepared for a weld
> joint (Butt and/or Fillet). A few milimeters deep cuts are often
> observed during manual gas cutting. What is the recommended practice
> to repair them:
>
> 1. Weld metal build up no matter their depth?
>
> 2. Grinding the cuts to a smooth geometry and filling them during
> welding?
>
> Also, if 2 is the recommended practice then to what extent should, a
> deviation from desired weld joint geometry, be considered acceptable?

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