3.3 Sanitary Piping
• Material: 304ss sanitary tube and fittings • Surface Finish: 32 µin Ra ID / OD • Welding: Welds are performed manually per AWS D181 / D181M standards (latest edition) The weld interior is argon gas purged • Weld Finish: As-welded ID / weld color removed OD • Slope: None • Connections: Tri-clamp fittings with single hinged heavy-duty clamps with wing nuts • Gasket Material: EPDM • Valves: Butterfly type with 304ss body, EPDM seat, and pneumatic actuator 3.4 Steam Piping • Description: Steam piping for direct steam injection into the chamber sump • Material: 304ss SCH 40 pipe • Surface Finish: Mill • Welding: Welds are performed manually per ASME B313 standards (latest edition) • Weld Finish: Weld color removed OD • Valves: Ball type with 304ss body and pneumatic actuator (control valve), or manual actuator (block and blow-down) 3.5 Electrical Conduit • PVC Conduit: SCH 40 PVC • Flexible Conduit and Fittings: UL listed PVC with nylon fittings • Connection to low voltage electrical devices is installed with flexible cord • Instruments requiring calibration are provided with extra cord to allow the device to remain connected and moved to a calibration cart 3.6 Pneumatics • Location: Instrument air filters, pressure regulators and solenoids are mounted inside the control panel • Material: Interconnections within the control panel and pneumatic air lines from the control panel to the skid mounted valves and equipment are run in polyethylene tube
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TD-0003.5
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