Discontinuity Stress-Knuckle

Dear All,

I have a SS 304 Tank of Dia 2950 mm and Heigth (TL to TL) 4250mm.

The tank has a toriconical bottom with half apex angle of 75 degree.

The tank is subjected to atmosphereic pressure. Design temp = 110 deg cen

The tank is supported on 4 legs of 200 NB Sch 40.

The shell thickness = 04mm, bottom cone = 04 mm (Nominal)

Due to the static head of 4.25 mtrs, the bottom cone to shell junction is failing under discontinuity stresses.

Should I provide a knuckle radius as mentioned in ASME section VIII Div:01?

(For diamter of 2950mm knuckle radius comes to be around 177mm)

Please help.

Regards

ASD23789