Document: NUREG-0800
Document ID: 04c894f5-e3ab-479e-8bca-0722777c79a7
Document Type: srp
Title: Revision 4 – January 2016
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1502/ML15027A401.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11
CFR Part: 
CFR Title: 

Content:
of malfunctions analyzed should be limited to the postulated failure or rupture of a tank and components located outside of containment or outdoors. The evaluation considers the impact of the failure on the nearest potable water supply in the unrestricted area and the long-term use of water for direct human consumption or indirectly through animals (livestock watering), crops (agricultural irrigation), and food processing (with water being an ingredient), with all potential exposure pathways, as described herein. The purpose of this BTP is to provide guidance in defining the mechanism of the failure, assumptions used for the analysis, and the approach applied in assessing the radiological impact. The objective is to develop an estimate of the amounts of radioactive materials released in an unrestricted area, and to assure that the radiological consequences will not exceed SRP acceptance criteria. Licensees use the results of this analysis to develop TS limits BTP 11-6-3 Revision 4 – January 2016 for liquid holding tanks to comply with 10 CFR 50.36a and design objectives for liquid effluents under 10 CFR 50.34a. Section B, below, provides an acceptable approach in addressing the concerns outlined above. This position paper sets forth minimum requirements. It does not prohibit the implementation of more rigorous design codes, standards, or quality assurance measures, nor does it prohibit applications of more conservative site geology and hydrology characteristics and site-specific conceptual models for surface water and ground water transport than those indicated in this BTP. Also, it does not require a reevaluation of LWMS with limiting conditions or controls for operation based on more conservative analysis and calculational assumptions. If the results of site-specific analyses still do not conform with the acceptance criteria of this BTP, the applicant is expected to propose TS limiting the total amount of radioactivity in such tanks and components. In all