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Is Temporary repair(clamp) on Fire Water line ( 6" Dia) can be considered as permanent repair when this clamp is welded ? I need clarity which standard allows this

Question asked by smfahmed on Oct 11, 2016

We have fire water ring in our industry and due to leakages in this header above ground we have applied some clamps now our mechanical guys need to reinforce this clamp with weld and want to make it permanent repair.I need clarity that is such kind of repair on Fire water network is allowed and which standard provide guideline for such repair.