NR/L3/TRK/055/U17
Work Instructions for Ultrasonic Rail Testing: Ultrasonic Inspection of Rail Foot for Transverse Cracks Using Sperry Roller Search Unit Rail Testing System
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| Organization: | NR |
| Publication Date: | 3 September 2016 |
| Status: | active |
| Page Count: | 18 |
scope:
This technique applies to the following: - all pearlitic rails in plain line Switches & Crossings (S&C), Adjustment Switches and welds, as far as coupling conditions allow. Where coupling conditions are not possible see other approved procedures.
This procedure is capable of detecting the following defect types that lie directly below the rail web:-
- Transverse defects in the centre of the rail foot
- Corrosion pitting of the rail foot (not guaranteed as dependant on location, shape and depth)
- Transverse cracks in the in the centre of the rail foot under the web at the pearlitic / stainless boundary of tri metallic welds.
Purpose
This procedure applies when using the Sperry Roller Search Unit (RSU) Rail Testing System (RSU-RTS) for the detection of transverse rail flaws in the rail foot under the web to prevent rail breaks.
Document History
December 3, 2022
Work Instructions for Ultrasonic Rail Testing: Ultrasonic Testing of the Rail Foot for Transverse Cracks Under the Web Using a Roller Search Unit
This technique applies to the following: - all pearlitic rails in plain line, switches & crossings (S&C), Adjustment Switches and welds, as far as coupling conditions allow.
This procedure is...
NR/L3/TRK/055/U17
September 3, 2016
Work Instructions for Ultrasonic Rail Testing: Ultrasonic Inspection of Rail Foot for Transverse Cracks Using Sperry Roller Search Unit Rail Testing System
This technique applies to the following: - all pearlitic rails in plain line Switches & Crossings (S&C), Adjustment Switches and welds, as far as coupling conditions allow. Where coupling conditions...