Energia i regulacje · 3.08.2004

Proposed Generic Communication; Draft Revision to NRC Inspection Manual Chapter 9900, “Technical Guidance,” Operability Determinations and Resolution of Nonconformances of Structures, Systems, and Components” (“Regulatory Issue Summary 2004-XX”)-(MC2262)

The U.S. Nuclear Regulatory Commission (NRC) is proposing to issue a Regulatory Issue Summary (RIS) to provide the nuclear power industry with updated staff guidance on operability determinations and resolution of degraded and nonconforming conditions of Structures, Systems, and Components (SSCs). This proposed RIS updates the previous guidance in NRC Inspection Manual Chapter (IMC) 9900, "Technical Guidance," and endorsed by the NRC in Generic Letter 91-18, "Information to Licensees Regarding Two NRC Inspection Manual Sections on Resolution of Degraded and Nonconforming Conditions and on Operability." The guidance is being updated to reflect relevant changes in the NRC regulatory process and regulations contained in 10 CFR 50.59, "Changes, Tests, and Experiments," and 10 CFR 50.65, "Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants;" and to clarify the guidance for selected issues based on operating experience, and; to consolidate and streamline the guidance in two previously separate NRC IMC 9900 sections. Earlier guidance on these subjects was provided to the industry in two sections of IMC 9900 as an attachment to GL 91-18, issued on November