PWHT for Cone 38 mm
PWHT for Cone 38 mm
(OP)
For one of our vessel we used the cone thickness 38 mm with shell thickness 32 mm, (SA516 Gr70N), do we need to perform partial PWHT for cone? or PWHT can perform if the thickness is more than 38 mm?





RE: PWHT for Cone 38 mm
RE: PWHT for Cone 38 mm
RE: PWHT for Cone 38 mm
UW-40
(5) When a welded joint connects parts of unequal
thicknesses, the nominal thickness shall be the following:
(a) the thinner of two adjacent butt-welded parts
including head to shell connections;
RE: PWHT for Cone 38 mm
RE: PWHT for Cone 38 mm
RE: PWHT for Cone 38 mm
UW-40 specifies that value in Material Certificate may be used, at manufaturer's option, in lieu of measuring the wall thickness at welded joint.
I personally think PWHT is technically unnecessary. Though, I have met clients who insists on performing the PWHT because the "as used" thickness is more than 38mm. ( 38.1mm~ )
Static equipment engineer at work.