Conformity assessment system for the use of nuclear energy. Conformity assessment in the form of examination. Unified procedures. Ultrasonic testing. Thickness measurement of monometals, bimetals and corrosion-resistant cladding surfaces
Electrical installations of buildings. Part 5. Selection and erection of electrical equipment. Section 534. Devices for protection against surge overvoltages
State system for ensuring the uniformity of measurements. Geophysical well logging and petrophysical study of rock, fluids and gas samples. Units of measured quantities
