Shane,
First to answer your questions in reverse order if I may,
No, I cannot answer K.Winais question and IMHO no one should be 'answering' this type of question on an internet forum with at best 30% of pertaining information presented. We can all offer ideas and opinions and in most cases, given enough basic information and background experience from the responder, these will be adequate although not definite answers to code questions, the idea being to provide code/standard references that allow the OP to pursue further research and confirm/deny his o
riginal thoughts.
In your 5.3.1 excerpt, I see you have placed in bold the statement '
all welding procedure qualifications'. That to me would state that all welding procedure qualifications would need a CVN on both Weld Metal and HAZ regardless of joint configuration of WPQ. ( I can see another question here!). I am not familiar with Cheveron structual specification but I have found it is easier to ask for a RFI/GQ or TQ or whatever terminology used in different parts of the world, to clear up different interpretations of work orders/contract specifications/purchase orders! These will nearly always outweigh any standard in effect.
Again, I have little knowledge of Australian Codes, although this may change shortly. I have heard they are "unusual"! However, in your stated case, I would perform LAM testing on all plates over-25mm and pass the cost on in a % of NDT expenses over all contract requiring LAM. I would imagine this would be cheaper, more efficient and more cost effective than trying to maintain 3 separate contract NDT document histories for LAM checking.
I disagree with you thinking it's a good question (more an adequate question
), Mr Winai has stated that his contract specification require CVN, I'm far from familiar with D1.1 but I'm pretty sure contract CVN requirements would preclude the use of Pre qualified WPS's under AWS D1.1? It is easy to offer a question on the internet, but sometimes we have to make a decision, this is often harder to do! That's what being a Welding Inspector is often about.
I was being a bit sarcastic in my original response for which I apologise to the OP, you have posted this and several other questions on many welding related web sites, hence my 'getting your monies worth' comment.
