Thanks Weldstan- Unfortunately I can't go that route for 2 reasons, either of which is not acceptable. !. ASME does not allow welding on a vessel which has been PWHT. All welding must be completed prior to PWHT. Secondly, the vessel is too small for access after it is welded. In the past, I have used a sacrificial wear plate of 1"+ thickness. I am attempting to reduce the weight and cost, and increase the lifespan of the part.