Items - Ultrasonic testing of Rails & Welds (B- Scan Digital Ultrasonic Flaw Detectors equipped with 9 channels for Rails & A- Scan Digital Ultrasonic Flaw Detectors for welds) by Need Based Concept method under traffic conditions through outsourcing and reporting the same as per Indian Railway Standard Specification for Ultrasonic testing of Rails and Welds (Revised-2020) read with latest correction slip & Comprehensive instructions of USFD testing of Rails and Welds on outsourcing and Manual for Ultrasonic testing of rails and welds (Revised 2022) read with latest correction slips with contractor's own B-scan 9 channel & A-scan machines and operators in Khurda Road, Sambalpur & Waltair divisions of East Coast Railway.