Do we need washers for pressure vessel?
Do we need washers for pressure vessel?
(OP)
I used to find the washers at manhole of some columns (pressure vessel). Is this a requirement in any codes or engineering standards (ASME Sect. VIII or others)? Please comment.





RE: Do we need washers for pressure vessel?
RE: Do we need washers for pressure vessel?
I suppose this is because nut seating conditions (bolt hole diameter, flange stiffness, flange material) are otherwise specified by codes, so the bolt will always sit under predetermined conditions.
prex
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RE: Do we need washers for pressure vessel?
RE: Do we need washers for pressure vessel?
RE: Do we need washers for pressure vessel?
V.Dwarakakrishna.
RE: Do we need washers for pressure vessel?
Where in the ASME code or other relavent pressure vessel related standards is bolt hole size specified.
What are the relavent issues and standards to specify washers for this situation?
RE: Do we need washers for pressure vessel?
Another thing to keep in mind with hardened washers is corrosion. We have experienced high corrosion rates with the hardened washers. The corrosion can lead to relaxation of proper bolt torque and eventual bolt failure.