Condensing Under cGMP

In pharmaceutical and bioprocess service the exchanger is part of a qualified system, so the deliverable is never just the hardware. ASME BPE, first published in 1997 and revised on a regular cycle, sets out what hygienic design actually means in practice: acceptable materials with full traceability, maximum surface roughness, hygienic weld procedures and inspection, dead-leg and L/D limits at every branch, and a documentation package you can hand to a validation team. A condenser that hits its thermal duty perfectly and arrives without that paperwork is not a usable unit. We scope both halves of the job at quotation, before anything gets fabricated.

• WFI and pure steam condensing on multiple-effect stills, single-effect distillers and pure steam generators, where the condensate itself is the compendial product and has to meet USP or EP limits.
• Double tubesheet construction with a vented, inspectable interspace on any duty where a tube leak could put utility fluid in contact with product or with WFI.

• API and intermediate process condensing on reactors, dryers and distillation columns, usually with solvent recovery, reflux control and containment driving the design.
• Bioreactor and fermenter off-gas condensing to knock moisture out of the exhaust ahead of filtration, protecting vent filters and holding vessel pressure steady through a run.

• Hygienic detailing as standard: 316L wetted surfaces, mechanically polished and passivated to a specified Ra, sloped for positive drainage, with sanitary clamp or extended tube weld ends.
• Documentation built for qualification — material test reports, weld maps and coupons, passivation certificates, hydrotest records, and slope and drainability verification.