Document: NRC Regulatory Guide
Document ID: e1a28538-35cc-4fc2-ab12-2e1d95830205
Document Type: regulatory_guide
Title: Acceptability of ASME Code, Section XI, Division 2, Requirements for RIM Programs for NPPs, for Non-LWRs
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2112/ML21120A185.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.246
CFR Part: 
CFR Title: 

Content:
to document the results of RIM activities that have taken place during a plant outage, or from online inspections, tests, MANDE, and maintenance, repair, and replacement practices that support the RIM program. Passive Component A component that has no moving parts and does not depend on an external input such as actuation, mechanical movement, or supply of power. It can experience changes in pressure, temperature, or fluid flow in performing its functions. Some examples of passive components include heat exchangers, pipes, vessels, electrical cables, and structures. Probabilistic Risk Assessment A quantitative assessment of the risk associated with plant operation and maintenance that is measured in terms of frequency of occurrence and consequences of event sequences, event sequence families, or release categories. Preservice Inspection (PSI) Inspections that are conducted on a component after construction examinations but before it is placed into service or after a repair or replacement activity. The intent of a PSI is to establish a baseline to compare future inspection results to determine whether damage is occurring. A preservice examination also provides assurance that no significant flaws from construction were missed and left in the component. DG-1383, Page 19 Pressurized-Water- Cooled Nuclear Power Reactor A nuclear reactor type that pressurizes the water coolant to prevent boiling of the coolant. Qualification or Certification Program A program to ensure NDE personnel meet a minimum level of performance to conduct NDE or nondestructive tests. Reheat Cracking/Creep Stress Cracking Cracking that occurs in high-strength, low-alloy steels, particularly chromium, molybdenum, and vanadium steels, during post-heating and that may be caused by the poor creep ductility of the heat-affected zone. Reliability Target A performance goal established for the probability that an SSC will complete its specified function to achieve plant-level and reliability goals. RIM