Ultrasonic Testing Of Skv/At Welds With Contractor S Own Weld Tester And Operators On Nominated Routes Of East Central Railway Including Hand Probing (Flange Testing) Of Welds As Per Indian Railway Standard Specification For Ultrasonic Testing Of Rails/Welds, Revised-2020 (Document No. T-53) And Manual For Ultrasonic Testing Of Rails And Welds, Revised 2022 (With Latest Amendment) Issued By Rdso.