Document: NRC Regulatory Guide
Document ID: 47283fef-08ff-4021-afa3-0c8370080b94
Document Type: regulatory_guide
Title: Inservice Inspection of ASME Code Class 2 and 3 Nuclear Power Plants components
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1335/ML13350A361.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.51
CFR Part: 
CFR Title: 

Content:
one-third of each inspection interval. 3. Inspection requirements for ASME Code Class 3 components should include the following: a. System pressure tests should be performed to the extent necessary to perform the component examination. Test pressure should be at least: (1) For closed systems, 110 percent of the design pressure. (2) For open storage tanks, the nominal hydrostatic pressure developed with the tanks filled to design capacity. (3) Open-ended portions of systems may be exempted from pressure testing. b. Visual inspections for evidence of unanticipated component leakage, structural distress. or corrosion. c. Inspection of supports and hangers for piping and components over 4 inches in diameter for evidence of inadequate support, unintended restraint, or strurtural distress. 4. Records of the inserice inspection should be established and maintained for the life of the plant and should include: a. Identification of systems components inspected; b. Date of inspection; c. Repair or replacement; and d. Signature of employee certifying dte inspection was made. 1.5 1-2