Flange Calculation for External Loads 1

[enfield2016]

I want to perform a calculation for a Flange with External loads acting on it.Find the below details:
Size = 3"150#
MAWP = 244.322 psi
Design Temperature =181degF
Flange material = SA 105
Bolting Material= SA 193M Gr.B7
Corrosion Allowance= 3mm
As per new Interpretation (BPV VIII-1-16-85) we have to check whether the flange can withstand the external loads acting on it.
I have performed the calculations as per Appendix-2 but due to less bolt area than the actual required PV Elite will terminate the further Calculations.
Also a standard flange with external loads cannot be calculated as per Appendix-2 as it does not covers these section.
I have tried to convert the loadings into pressure but still it doesnt works.

Can someone suggest me proper steps of calculation to be performed for these flanges?

Thanks in advance.

 

[TGS4]

Follow the approach in PVP2013-97814. It employs a modified Equivalent Pressure calculation with a factor (greater than 1.0) on the rating pressure.

 

[enfield2016]

Thanks for your reply.

But i could not find any reference regarding to this. Can you send me the link for the file?

 

[TGS4]

http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1815390&resultClick=1