Module 9: Control Techniques - International Association of Fire ...

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IAFF Training for Hazardous Materials: Technician© Student Text Corrective Actions for Tank Car Fittings Loading and Unloading Fittings Location of Leak Probable Cause Basic Repair Method Liquid or Vapor Valve - Ball - or Plug Type Liquid or vapor leak from Valve not completely closed Close valve threaded orifice in valve Plug loose or missing Tighten or replace plug Plug or seat worn To be handled by a tank car specialist Liquid or vapor leak from Loose flange nuts Tighten flange nuts seat between valve and the manway cover plate Bad gasket To be handled by a tank car specialist Liquid or vapor leak around Packing retainer loose Tighten packing retainer valve stem Missing split ring packing To be handled by a tank car specialist Fill Hole Cover Liquid or vapor leak around Loose cover nuts Tighten loose cover nuts hole cover Fill hole gasket damaged To be handled by a tank car or missing specialist Manway Cover Liquid or vapor leak between Loose cover nuts Tighten loose cover nuts manway nozzle and manway cover Manway gasket damaged To be handled by a tank car or missing specialist Top-Operating Mechanism (Stuffing Box) for Bottom Outlet Valve Liquid or vapor leak Loose packing gland nut Tighten packing gland nut from cover of valve Defective packing material To be handled by a tank car specialist 9-46 Module 9: Control Techniques
Student Text IAFF Training for Hazardous Materials: Technician© Bottom Outlet Liquid leak from Bottom outlet valve open Close bottom outlet valve bottom outlet cap Bottom outlet cap/plug loose Tighten bottom outlet Liquid Line Flange Corrective Actions for Tank Car Fittings (continued) Loading and Unloading Fittings Location of Leak Probable Cause Basic Repair Method Bottom outlet cap gasket To be handled by a tank car missing or defective specialist Liquid leak from flange Loose flange nuts Tighten flange nuts Missing or defective gasket To be handled by a tank car specialist Module 9: Control Techniques 9-47
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Module 9: Control Techniques - International Association of Fire ...

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