Rewelding Existing Weld Joints
Rewelding Existing Weld Joints
(OP)
Hi Everyone,
When an API 650 tank is dismantled and relocated to a new location, can it be welded on its existing weld joints? Or is it required to cutoff the Heat Affected Zones (approx 2in) on each sides/edges of the plate before rewelding? The API 653 only states that "the existing weld joints shall meet the requirements of the as-built standard."
Appreciate any advise. Thanks.
When an API 650 tank is dismantled and relocated to a new location, can it be welded on its existing weld joints? Or is it required to cutoff the Heat Affected Zones (approx 2in) on each sides/edges of the plate before rewelding? The API 653 only states that "the existing weld joints shall meet the requirements of the as-built standard."
Appreciate any advise. Thanks.





RE: Rewelding Existing Weld Joints
RE: Rewelding Existing Weld Joints
Does this mean that we don't need to cut off the HAZ area? We will just clean and prepare the plate edges to undergo a new welding process?
RE: Rewelding Existing Weld Joints
RE: Rewelding Existing Weld Joints
Follow up question: What if I weld a high strength steel plate for pressure vessel application? Will there be any special requirements for rewelding? Especially if the plate thickness is over 36mm.
RE: Rewelding Existing Weld Joints