Energia i regulacje · 20/12/2018

NRC Clarifies Requirements for Reactor Pressure Vessel Upper Head Examinations

The U.S. Nuclear Regulatory Commission (NRC) has issued a Regulatory Issue Summary (RIS) to clarify the requirements for bare-metal visual examinations of reactor pressure vessel upper heads, as outlined in the American Society of Mechanical Engineers (ASME) Code Case N-729-4.