Document: NUREG-0800
Document ID: 48fb37ec-8e3e-4c2c-96c3-daa5e7da62f9
Document Type: srp
Title: of the applicant's SAR is reviewed to identify any missing data,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340557.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.12
CFR Part: 
CFR Title: 

Content:
n can be implemented before design basis conditions are exceeded. 2.4.12-14 Rev. 2 - July 1981 V. SARs (Standard Format & Content Information, Sections 2.4 & 2.5) for each of the plants with permanent dewatering systems should include the following information: (a) Provide a description of the proposed dewatering system, including drawings showing the proposed locations of affected structures, com- ponents and features of the system. Provide information related to the geotechnical and hydrologic design of all system components such as interceptors, drainage blankets, and pervious fills with descrip- tions of material source, gradation limits, material properties, special construction features, and placement and quality control measures. (Note structural, mechanical and electrical information needs described elsewhere.) Where the dewatering system is important to safety, provide a discussion of its expected functional reliability. The discussion of the bases for reliability should include comparisons of proposed systems and components with the performance of existing and comparable systems and components for applications under site conditions similar to those proposed. Where such information is unavailable or unfavorable, or the application (design and/or site) is unique, the unusual features of the design should be supported by additional tests and analyses to demonstrate the conservative nature of the design. In such cases the staff will meet with the applicant, on request, to establish the bases for such additional tests and analyses. (b) Provide estimates, and their bases, for soil and rock permeabilities, total porosity, effective porosity (specific yield), storage coeffi- cient and other related parameters used in the design of the dewater- ing system. In general, these site parameters should be determined utilizing field and, if necessary, laboratory tests of materials representative of the entire area of influence of the expected draw- down of the system.