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ASME BPE Requirements
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The Bioprocessing Equipment standard was created because pressure vessel codes address containment and say nothing about cleanability, drainability or traceability. BPE fills that gap with requirements specific enough to be verified and documented.
Surface designations. The SF series specifies both a roughness limit and the finishing method, distinguishing mechanically polished from electropolished surfaces. That distinction matters because the two behave differently in hot high-purity service.
Dead legs, slope and traceability. Projections limited by length-to-diameter ratio, drainability in the installed orientation, and material traceability running from mill certificate through to the nameplate.
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Documentation Cannot Be Retrofitted
Weld maps are produced as welds are made. Traceability survives only if it is maintained through cutting and forming. Finish verification happens while surfaces are accessible.
None of that can be reconstructed afterward with any credibility. Tell us at quotation what your IQ and OQ protocols require, so it becomes part of the fabrication plan rather than a problem discovered during qualification.
Selection Data We Need
Flow rate and identity of both fluids, inlet and required outlet temperatures, operating and design pressures, allowable pressure drop on each side, and any code, alloy or hygienic requirement. Fouling history, turndown range and cleaning method matter as much as the design point.
