![]() Shell openings are reinforced with riveted reinforcement liners. The courses are joined to each other by riveted circumferential seams. Usually the longitudinal seam of each course is riveted together using a longitudinal butt joint with inner and outer butt straps, though older boilers may have longitudinal lap seams. The boiler shell is made up of cylindrical sections or courses which may be straight or tapered. The common steam locomotive boiler is a horizontal straight fire tube boiler with riveted cylindrical boiler courses, a stayed internal firebox at the rear, and a smokebox at the front. For repair information and additional construction illustrations, the new NBIC Appendix H, Steam Locomotive Fire Tube Boiler Repair is recommended. The following brief description of the steam locomotive boiler will acquaint inspectors with its construction and summarize the inspection procedure. (5 printed pages)Īlthough steam locomotives are no longer used by the major railroad companies for transport, many remain in use on museum railroads for the public, while others are undergoing restoration. Summary: The following article is a part of National Board Classic Series and it was published in the National Board BULLETIN. Description of Construction and Inspection Procedure for Steam Locomotive and Fire Tube Boilers
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