Tank designed to British Standards from the 60s

[Hurricanes]

Hi,

I am looking at a storage tank orginally designed in the 1960s to BS2654. I have BS2654, but I am struggling to find the specifications of the steel used. On the drawings plate to BS13 or BS15 is called for. I am chasing the yield strength of the plate to check what the orginal design stres limit was (2/3 yield or 260N/mm2 whichever is less). Can anyone shed some light upon the properties of these steels, or point me in right direction at least?

Thanks.

 

[IFRs]

Your best bet may be to send a sample of the material to a testing lab and get chemical and mechanical analysis. Chemical / mechanical to possibly identify the material, mechanical to establish safe liquid levels, appropriate low operating temperature etc.