Document: NRC Regulatory Guide
Document ID: f4c5fb1d-efb9-4168-9804-5ad3f6f64d06
Document Type: regulatory_guide
Title: Reporting Procedure for Mathematical Models Selected To Predict Heated Effluent Dispersion in Natural Water Bodies
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0037/ML003739535.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.4
CFR Part: 
CFR Title: 

Content:
imension of each exit port should be specified, and irregulady shaped discharge ports should be described in the text. c. Location. The discharge location is either shoreline or offshore. Shoreline is defined as the boundary between the land surface and the receiving water body. The decision for discharge ocation depends upon the point of entry to the receiving water body. d. Pudtiam. The discharge postion is eaher inarface or submerged. A surface discharge is defined as one for which the water surface is a boundary at the point of entry to the receiving water body. All other positions ar regarded as submerged. For a prototype with a submerged discharge, the text should state the 4.4-2 ýertical distances from the discharge centerline to (1) the bottom and (2) the surface of the receiving water body. e. DbvctL In the case of the prototype, the horizontal discharge direction should be specified as the compass angle (degrees) of the initial horizontal component of discharge relative to local true North; the nonhorizontal discharge direction should be specified as the angle (degrees) produced by the initial discharge direction vector and the horizontal. If a model can simulate both horizontal and nonhorizontal discharge directions, this should be indicated in the MAT. f. Volume Flow Rate. The anticipated operating range of volumetric flow rates for the prototype should be given. g. Dchiuge Vdocity. The normal operating range of discharge velocities at the outfall should be specified. 1. Effluent Excess Temperature. Excess temperature is defined as the difference between effluent temperature and ambient water temperature at the discharge point. The measured or expected value of each temperature parameter (intake, discharge, ambient) should be given in the text. 3. Receiving Water Chinactks a. Type. The type of receiving water body should be identified in the MAT by the following number code: (1) lake (2) rime, tidal (3) river, nontidal (4) estuary (5) ocean (6) cooling