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Rectangular sight glass, vessel reinforcement calcs?

Rectangular sight glass, vessel reinforcement calcs?

Rectangular sight glass, vessel reinforcement calcs?

(OP)
How do I carry our reinforcement checks for a rectangular sight glass in an ASME VIII Div. 1 vessel?

RE: Rectangular sight glass, vessel reinforcement calcs?

The code states that 'openings ... shall preferably be circular, elliptical or obround'. So even rectangular openings are allowed and can be checked according to code, starting at UG-36.
However the opening in the vessel wall does not need to be rectangular for a rectangular sight glass.

prex
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http://www.levitans.com : Air bearing pads

RE: Rectangular sight glass, vessel reinforcement calcs?

From the mechanical point of view rectangular openings are a source of stresses. The arc of these have a big effect on the stresses suffered by the vessel, that is why the codes go to circular (optimal) or at least elliptical ones. in any case despending on the material/pressure these can be used but always taking into account that it is not the best "mechanical" solution

RE: Rectangular sight glass, vessel reinforcement calcs?

Obrong is OK. If calcs pass or a repad will be needed

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