Hello!!!
At designing of a vessel working under pressure the design engineer appoints the sizes of constructive elements of welded seams. Tell please!
Than is guided design engineer defining constructive elements of weld? (For full weld penetration)
Namely:
a - groove angle
c - root face
d - gap
(See the enclosed picture)

In what standard documentation ASME it is described?
Or how you appoint the sizes of these elements?

Please refer to UW-9 (b) Design of Welded Joints
The dimensions and shape of the edges to be joined shall be such as to permit complete fusion and complete joint penetration. Qualification of the welding procedure, as required in UW-28 is an acceptable proof that the welding groove is satisfactory.

AL

Let's admit a thickness of welded shells of the case of a vessel – 10 mm. What sizes (a, c and d) a ring weld seam can appoint to be assured in full weld penetration:
How precisely to count? What of sizes to accept d=2mm or d=4mm etc.

The dimensions would be defined in your WPS. This WPS would be qualified by a PQR.

Bye

AL

Well. But the question is not closed.

Than is guided author WPS and PQR defining constructive elements of weld? (For full weld penetration)
Namely:
a - groove angle
c - root face
d - gap
(See the enclosed picture)


Let's admit a thickness of welded shells of the case of a vessel – 10 mm. What sizes (a, c and d) a ring weld seam can appoint to be assured in full weld penetration:
How precisely to count? What of sizes to accept d=2mm or d=4mm etc.