Hello Lee
PD 5500 has a wealth of welding geometry details in its Annex E. There is so much information there, that it would be impossible to describe the illustrations in the space allotted on this forum.
Like AMSE VIII, Division 2, PD550 allows high design stresses (higher than division 2 in many cases), so generally all welding has to be full penetration. Try to get sight of a copy of PD500, as it is very informative. It is really necessary reading when the design of the vessel is being put together.
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Sincerely,
Ray Delaforce
CADWorx & Analysis Solutions
Hexagon PPM