| 1 |
Introduction |
| 2 |
Scope |
| 3 |
Selection of rails to be welded |
| 4 |
Execution of joints at site. |
| 5 |
Operations subsequent to welding |
| 6 |
Acceptance tests |
| 7 |
Sample test joint |
| 8 |
Other requirements |
| 9 |
Precautions |
| 10 |
Defects in A.T. welding |
| Annexure-1 |
Status of A.T. welding techniques |
| Annexure-2 |
List of Equipments for Alumino thermic welding of rail joints by short preheating process per welding team |
| Annexure-3 |
Composition of thermit welding team (Compressor tank wise) |
| Annexure-4 |
List of approved suppliers of Rail profile weld grinder & Weld trimmer |
| Annexure-5 |
Proforma for THERMIT WELD REGISTER |
| Annexure-6 |
Procedure for painting of weld collar for thermit welded rail joints to protect against normal corrosion |
| Annexure-7 |
Procedure for painting of weld collar for thermit welded rail joints to protect against severe corrosion |
| Annexure-8 |
Procedure for Ultrasonic testing of Alumino-thermic rail joints |
| Annexure-9 |
Extracts from IRST-19-1994, Clause 4.2 on Mechanical & Metallurgical tests on test welds and Retests |
| Annexure-10 |
Major defects in A.T. welding because of improper weld execution |
| Figure 3.1(a) |
Tolerance on the End bends in the Vertical-plane |
| Figure 3.1(b) & (c) |
Tolerance on the End bends in the Horizontal plane |
| Figure 4.7.1.1 (a) & (b) |
Tolerance for Lateral alignment at the time of welding |
| Figure 4.7.1.2 |
Tolerance for Vertical alignment at the time of welding |
| Figure 5.1 |
Details of Insulation hood |
| Figure 5.4.2 |
Tolerances on finished welds |