These statistics apply to the measurement of x-radiation emitted from high voltage rectifiers and shunt regulators. These x-radiations' are considered as the soft x-ray variety emanating from the tube and produced by an accelerating potential in excess of 10@000 volts. Purpose- To establish the statistical acceptance criteria for controlling soft x-radiation from high voltage receiving tubes initially and during life.
TEP 173-1970 history
1970TEP 173-1970 Quality Control of X-Radiation Emitted from High Voltage Rectifier and Shunt Regulator Receiving Tubes@ Recommended Practice for