UT for overlays - cladding and ring grooves
UT for overlays - cladding and ring grooves
(OP)
API 6A (Spec for Wellhead and Christmas Tree) requires for PSL3 equipment UT inspection for CRA overlay. For overlay applied in ring grooves there is no volumetric inspection prescribed, not even for bond integrity evaluation. Its seams strange because, in my opinion, in the majority of cases the overlay in ring grooves for metal sealing rings would be under much higher tension than a simple cladding overlay.
I would be glad to have any reasonable explanation for this.
Could someone help me?
I would be glad to have any reasonable explanation for this.
Could someone help me?





RE: UT for overlays - cladding and ring grooves
We did this for years and for the most part API 6A doesn't like welding - or at least makes it difficult for the non-standard (high strength-non ASME recognized materials).
Hope this helps.
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