1. Guiding Document RD 153-34.1-003-01. Welding, heat treatment, and testing of pipe systems of boilers and pipelines during installation and repair of power equipment (RTM-1s), Moscow: PIO OBT, 2001.
2. Federal Norms and Rules in the Field of Atomic Energy Use NP-084-15. Rules for testing base metal, welded joints, and deposited surfaces during operation of equipment, pipelines, and other elements of nuclear power plants, Moscow: Rosenergoatom, 2015.
3. Federal Norms and Rules in the Field of Atomic Energy Use NP-105-18. Rules for testing metal equipment and pipelines of nuclear power plants during manufacture and installation, Moscow: Rosenergoatom, 2018.
4. GOST (State Standard) R 55724—2013. Nondestructive testing. Welded joints. Ultrasonic methods, Moscow: Standardinform, 2014.
5. GOST (State Standard) R 05.05.02—2018. System of compliance in the field of atomic energy use. Conformity assessment in the form of testing. Unified techniques. Ultrasonic inspection of welded joints and deposited coatings, Moscow: Standartinform, 2018.