The STS-K-78P is a unique, radiation-resistant television system that provides controlled surface scanning at high speed and measures deviations with metrological-certified accuracy. The system is designed for automated pre-operational and operational control of the base metal, weld coatings, and welds inside PWR, BWR, and VVER reactors. The system meets the visual inspection criteria VT-1, PNAE G-7-016-RD-89, and EA-0079-2005. STS-K-78P systems have discovered dozens of RPV defects that inspectors determined would not have been detected by other means.