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:
ater intakes whose current use or future construction may be identified, or may be reasonably deduced from available land-use census information. For tanks included in Standard Technical Specification 3.11.1.4 and Tables 3.3-11 and 4.3-11, an activity limit (curie/becquerel) should be determined based on the methodology presented in SRP Section 11.2, “Liquid Waste Management System,” and BTP 11-6. The methodology is based on the calculated radionuclide inventory in the selected tank and components filled at 80 percent capacity using a design basis fission product source term of: (a) 0.12% of the operating fission product core inventory being released to the primary coolant for a PWR, or (b) consistent with a noble gas release rate of 15 uCi/MWt per second (0.56 MBq/MWt per second) with 30-minute decay for a BWR. The selection of 80- percent assumes that some of the content of the failed tank would remain in the tank and room or cubicle where the tank is located, with the associated amounts of radioactive materials retained in the building itself and, therefore, not available for environmental transport. The method cited above is used to derive the inventory of radioactivity that if contained in the tank and components would result in radioactivity concentrations equal to the SRP acceptance criteria of a total dose of 100 mrem (1 mSv) at the point of entry into the nearest existing or predicted future water supply that is used as a source of water for direct human consumption, or that is used indirectly through livestock watering or irrigation of grazing pastures, consumption of animal products (meat and milk products), fish and invertebrate consumption, crop irrigation and consumption of such crops, or else is used as an ingredient in food products or food processing. By excluding dissolved and entrained noble gases from surveillance requirements, Standard Technical Specification 3.11.1.4 should apply to the lowest radioactive inventory of activation and mixed