L/D Ratio and Instrument Nozzles
L/D Ratio and Instrument Nozzles
(OP)
Basic pressure vessel question I guess the following two is:
1. Is there a prefered range within which the L/D ratio for a vessel should fall into?
2. Instrument Nozzles, in particular the flange bolt hole orientation. How are the bolt holes for the nozzles normally orientated? Are the centreline bolt holes perpendicular to each other (with centreline passing thru the bolt holes centrelines). Is this the standard practise and does the code mention this? Otherwise how would the level gauge manufacturer know the position to orientate his level gauge mating flanges?
Thanks.
1. Is there a prefered range within which the L/D ratio for a vessel should fall into?
2. Instrument Nozzles, in particular the flange bolt hole orientation. How are the bolt holes for the nozzles normally orientated? Are the centreline bolt holes perpendicular to each other (with centreline passing thru the bolt holes centrelines). Is this the standard practise and does the code mention this? Otherwise how would the level gauge manufacturer know the position to orientate his level gauge mating flanges?
Thanks.





RE: L/D Ratio and Instrument Nozzles
RE: L/D Ratio and Instrument Nozzles
For a tank filled with liquid the L/D or Height/D ratio must be around 0.5-0.6 for seismic zone 4 if one does want to have decent plate thicknes, you can read more on this on the tanks (AST) manual of Philip E. Myers.
RE: L/D Ratio and Instrument Nozzles
RE: L/D Ratio and Instrument Nozzles
"L/D or Height/D ratio must be around 0.5-0.6 for seismic zone 4 if one does want to have decent plate thicknes"
I doubt any thickness would be effected within these parameters?
RE: L/D Ratio and Instrument Nozzles
RE: L/D Ratio and Instrument Nozzles
RE: L/D Ratio and Instrument Nozzles
Steamguy2
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