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