SP WORKS INSULATED JOINTS INTO RAIL WELDING

Southern Pacific has adopted an approach to insulated joints in welded rail that involves the prefabrication of a bonded insulated joint between two 39 foot rails and the subsequent welding of the resulting 78 foot rail into welded strings at the welding plant. The insulated joints are assembled using an epoxy resin and Huck fasteners, and the epoxy is allowed to set for about 12 hours, after which the insulating value is tested with an Ohmmeter. The 78 foot rail must be backed into the welding machine. Such incorporation of the insulated joint into the welded rail string requires pre-planning the location of the insulated joints in the welded rail strings, and careful attention to the loading diagram when loading and unloading the welded rail train. The loading diagram is placed in a container at the loading end of the welded rail train.

• Corporate Authors:

  Simmons-Boardman Publishing Corporation

  P.O. Box 350
  Bristol, CT  United States  06010
• Publication Date: 1972-11

Media Info

• Features: Photos;
• Pagination: p. 24-25
• Serial:
  • Railway System Controls
  • Volume: 3
  • Issue Number: 11
  • Publisher: Business Press International Limited

Subject/Index Terms

• TRT Terms: Insulation systems; Joints; Signaling; Welded rail
• Identifier Terms: Southern Pacific Railroad
• Uncontrolled Terms: Insulated joints
• Old TRIS Terms: Bonded joints
• Subject Areas: Bridges and other structures; Railroads;

Filing Info

• Accession Number: 00041221
• Record Type: Publication
• Source Agency: Railway System Controls
• Files: TRIS
• Created Date: Apr 2 1976 12:00AM