Document: NRC Regulatory Guide
Document ID: 8b2255d1-47a9-4dfe-ba41-568c561a89ee
Document Type: regulatory_guide
Title: Inspection of Water-Control Structures Associated with Nuclear Power Plants + HISTORY – HISTORY 01/2015 – DG-1245 , Proposed Revision 2 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1325/ML13255A435.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.127
CFR Part: 
CFR Title: 

Content:
ration of the water-control structures should be assembled and, to the extent practicable, included in the initial inspection report discussed in Section C.10 of this RG.1 This data should include the following items, where available and appropriate: a. General Project Data (1) a regional vicinity map showing the project location and the upstream and downstream drainage areas; (2) as-built drawings of important project features, including details such as instrumentation, internal drainage, transition zones, or relief wells; and 1 Most engineering data are presented in preliminary and final safety analysis reports. To aid the inspectors, the initial inspection report should either incorporate this information or reference in detail its location in the safety analysis reports. Pre-Decisional DG-1245, Page 7 (3) construction progress and as-built photographs of excavation, backfill, and concrete surfaces, points of contact between structures or between structures and earth embankments, and foundation conditions. b. Hydrologic and Hydraulic Data (1) drainage area and basin characteristics; (2) storage and surcharge capacities, including dead storage; (3) elevation of the maximum design pool and freeboard height; (4) spillway characteristics (location, type, width, and crest length and elevation); and (5) location and description of flashboards, fuse plugs, and emergency spillways. c. Other Types of Data (1) foundation data and regional geological features, including boring logs, geological maps, profiles and cross-sections, and reports of foundation treatment; (2) properties of embankment and foundation materials, including the results of laboratory tests, field tests, construction control tests, and assumed design material properties; (3) concrete properties, including the source and type of aggregate, the cement used, mix design data, and test results during construction; (4) electrical and mechanical equipment type; the rating of normal and emergency power supplies,