[MW:29120] derivation welds

Dear group,

Please if you could analyzed the attached image.

It´s pipeline B31.8.

Constructor at first time, welded tube-flanged joint. Then realized that its necessary have an instrument as showed.

The ask is there´re some restrictions for minimal distance between weld joint and derivation in pipe.

Please if you could give some reference in design code.

Thanks in advance

Miroslav Tadic

Integrity Engineer

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