1. Tank Car Specialist Training Support Package November 2014 Module 9: Leak Repair

2. Tank Car Specialist Introduction This module will explain the most common tank car leaks which occur in the top and bottom fittings and valves. The common methods of repairing these leaks will also be presented.

3. Tank Car Specialist Enabling Learning Objectives 9-1 Identify the safety considerations for containment of leaks. 9-2 Identify the requirements for containment of leaks. 9-3 Identify the various ways in which containers can release their contents.

4. Tank Car Specialist Enabling Learning Objectives 9-4 Identify the different techniques of containment: Plugging & Patching −Wedges & cones −T-bolt patches −Chemical patches, epoxies −Self tapping screws −Putties & expansion foams −Rubber ball toggle bolts −Various tapes Capping Kits −Chlorine C kit −Midland kit −Various other specialized kits Valve Repair & Replacement −O-rings, gaskets −Valve body replacement

5. Tank Car Specialist Considerations Compatibility Pressure/nonpressure Location Insulated/noninsulated Type of Leak –Jagged tear –Gouge –Puncture –Seam Interferences −Rust −Grease −Paint

6. Tank Car Specialist Techniques Non-reactive wedges, cones and devices Magnetic patches Mechanical patches Foam plugs Bladder wraps Adhesive patches

7. Tank Car Specialist Combination of Multiple Wedges and Cones

8. Tank Car Specialist Wedge and Putty

9. Tank Car Specialist T Bolt Plugs

10. Tank Car Specialist Self-expanding Sealants

11. Tank Car Specialist Self Tapping Screws for Small Holes Screws, preferably of stainless steel with washers

12. Tank Car Specialist Putty, Self-Expanding Foam and Other Sealants Putty Silicone Sealer Mastic Epoxy

13. Tank Car Specialist Pop Rivets Repair holes Attach patches

14. Tank Car Specialist Ball and Stopper Plug Kits

15. Tank Car Specialist Plastic Totes and Drums / Tire Seal

16. Tank Car Specialist Nuts, Bolts, Washers, O Rings

17. Tank Car Specialist Patch Kits

18. Tank Car Specialist Industrial Tapes

19. Tank Car Specialist Vetter Air Bag Systems

20. Tank Car Specialist Magnetic Patches

21. Tank Car Specialist Conclusion Participants were given the information to: Identify the safety considerations for containment of leaks. Identify the requirements for containment of leaks. Identify the various ways in which containers can release their contents.