3.3 Hygienic Piping
• Material: 316Lss hygienic tubing and fittings • Fittings: BPE certified (where applicable) • Surface Finish: 20 µin Ra ID (SF1) / 32 µin Ra OD
• Welding: Welds are completed using an orbital welder The welder interior is as-welded and argon gas purged All welds are borescope inspected for quality and accepted per current ASME BPE standards – see Section 9 Documentation for more information • Weld Finish: As-welded ID / color cleaned OD • Slope: 1 / 8 " per foot / 10% (GSD2) • Connections: Tri-clamp fittings with single hinged heavy-duty clamps with wing nuts • Gasket Material: EPDM (USP Class VI) • Valves: Diaphragm type with 316Lss body, PTFE faced / EPDM backed diaphragms, and pneumatic actuators 3.4 Service Panels • Description: Panels located on the load/unload side interface to provide access to interior maintenance space of the washer • Material: 304ss • Surface Finish: 32 µin Ra 3.5 Electrical Conduit • Material: Rigid conduit is schedule 40 galvanized pipe with PVC coating Flexible conduit to be non-metallic UL rated PVC with nylon fittings Connection to electrical devices operating at 50 volts and higher is installed with flexible conduit Connection to low voltage electrical devices is installed with flexible cord Calibrated instruments are provided with extra cord, allowing them to remain connected when moved to a calibration cart 3.6 Pneumatics • Location: Instrument air filters, pressure regulators and solenoids are mounted outside the control panel in the maintenance space • Material: Pneumatic equipment is connected to the skid mounted solenoid valves with polyethylene tubing 3.7 Instrument Tags • Description: Each valve, instrument, and equipment is provided with an identification tag containing the corresponding P&ID tag number • Material: 304ss • Weld Finish – Load/Unload Side: Ground and polished • Weld Finish – Maintenance Space: Color cleaned • Gasketing: EPDM foam
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TD-0002.4
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