EN 13445-3, 7.7.2 Experience with nozzle within 2,5√(ea*r) allowed.

When manufacturing vessels according to AD 2000 or ASME, experience can be obtained for nozzles located within a distance less than 2,5√(ea*r) from tangent line knuckle/cylindrical part. We would therefore like the possibility to chose this option when calculating dished ends with nozzles located this way without doubling the desing pressure.