172x Filetype PDF File size 2.33 MB Source: rdso.indianrailways.gov.in
Page 1 of 27 MC – 172 Effective from September 2018 For Official use only सत्यमेव जयत े GOVERNMENT OF INDIA MINISTRY OF RAILWAYS RESEARCH DESIGNS AND STANDARDS ORGANISATION LUCKNOW Code of Procedure of Ultrasonic Testing for WAP5 Loco Axle with direct drive to Drawing no. G34-300.00-81 in Service. METALLURGICAL AND CHEMICAL DIRECTORATE CODE OF PROCEDURE No. MC-172 SEPTEMBER- 2018 (First Issue) Page 2 of 27 MC – 172 Effective from September 2018 Page 3 of 27 MC – 172 Effective from September 2018 CONTENT S.No. Description Page 1. Scope 4 2. Normative References 4 3. Methodology 5 4. Code of procedure 5-7 5. Important Note 8 6. Important Points 8-9 7. Criteria for acceptance 9 8. Magnetic Particle Testing 9 9. Recording of test details 9 10. Appendix 1 10-11 11. Sketch of Axle 12 12. Practically Observed Trace Patterns 13-24 13. Some Important A-Scan Images Taken during Data collection 25-26 Page 4 of 27 MC – 172 Effective from September 2018 M & C DIRECTORATE RDSO/LUCKNOW Standardisation of Ultrasonic Testing for WAP5 loco Axle with direct drive to Drawing no. G34-300.00-81 in Service. Synopsis: To ensure safety and reliability of rolling stocks, axles are required to be examined periodically for presence of cracks. This report describes the details of work carried out on standardization of Ultrasonic Testing Technique for above axle in service by far end, trace- delay, Near-end low-angle scanning & High-angel scanning using pulse echo reflection technique. This procedure is applicable for axles in service and intended to be used by ultrasonic personnel trained and certified by RDSO. 1. Scope: To Standardize the Ultrasonic Testing of WAP5 loco Axle with direct drive to Drawing no. G34-300.00-81 in Service. 2. Normative References: The following RDSO/IS standards contain provisions, which through reference in this text constitute provisions of this code of procedure. At the time of Publication, the edition indicated were valid Specification No. Title RDSO Specification no. Portable digital ultrasonic flaw detector with A-Scan M&C/NDT/125/2004, Rev-II, January Storage 2017 or latest RDSO Specification no. WD-17-Misc-92 Specification for Soft Grease / latest IS: 1628-1986 Reaffirmed in Feb 1996 / Specification for Axle Oil latest IS: 1875-1992 / latest Carbon steel billets, blooms, slabs and bars for forgings IS: 12666-1988/latest Methods for performance assessment of ultrasonic flaw detection equipment IS 8791 - 1978 / latest Code of practice for ultrasonic flaw detection of ferritic steel forgings ASTM E112 ( latest version) Standard Test Methods for determining Average Grain sizes
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