Document: NUREG-1555
Document ID: 16efba2d-597d-4734-84e7-046c257d75c3
Document Type: esrp
Title: HEAT-DISCHARGE SYSTEM
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 5
Section ID: 5.3.3
CFR Part: 
CFR Title: 

Content:
nature of the available meteorological data and observational experience at operating stations. ` Coordinate this analysis with the reviewers for ESRPs 5.1.1, 5.1.3, 5.3.3.2, and 5.8.1 to ensure that appropriate heat dissipation system factors are considered and to avoid duplication of any environmental analyses. (7) For an independent analysis, use the following procedure: ` For towers, use hourly onsite meteorological data, tower performance specifications, and an appropriate model to generate information on the spatial distribution of the elevated plume, annual plus seasonal and/or monthly estimates of ground level fogging, icing, and drift deposition as a function of distance and direction from the tower. These data should be compared with the meteorological data provided by the reviewer for ESRP 2.7 to determine the additional amount of ground level fogging and icing and to calculate the amount of drift deposition for the appropriate site-vicinity locations. ` For cooling systems employing spray canals or a cooling pond, assume the following: - The plume will exist as ground level fog, but will evaporate within 300 m or lift to become stratus for wind speeds greater than 2.2 m/sec. - The plume will exist as fog over the pond, lifting to become stratus for winds less than or equal to 2.2 m/sec. IV. EVALUATION FINDINGS Input to the EIS should contain the following information: October 1999 5.3.3.1-7 NUREG-1555 ` reference to the ESRP 3.4 description of the applicant’s proposed heat dissipation system, including a statement to locate the system on the station site and its distance from site and vicinity locations that could be affected by heat dissipation system operation ` predictions of the following for the affected site and vicinity locations: - additional amount of ground level fogging and icing - annual and/or monthly amount of drift deposition in gm/m2 or drift concentration in mg/m3 - cloud development and cloud shadowing - weather modification in terms