Document: NUREG-0800
Document ID: 06ca0ca1-d4e9-478b-ad5d-c52597a36b46
Document Type: srp
Title: COOLANT SOURCE TERMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1305/ML13058A173.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.1
CFR Part: 
CFR Title: 

Content:
s (TS), or the design basis source term, whichever is more limiting, is used to determine the effects of events like primary to secondary leaks and reactor steam source terms. This is addressed in SRP Section 11.1 for reactor coolant (primary and secondary) and reactor steam design details. 3. Design basis source term, based on 0.25 - 1 percent fuel defects, is used to determine shielding and ventilation design requirements. Addressed in SRP Section 12.2, “Radiation Sources,” source terms contained in systems and components. This information is also used in SRP Section 12.2 to develop post-accident shielding (for vital area access, including work areas) source terms in addressing NUREG-0737, “Clarification of TMI Action Plan Requirements,” Item II.B.2, or Regulatory Guide (RG) 1.183, “Alternative Radiological Source Terms for Evaluating Design Basis Accidents at Nuclear Power Reactors.” 4. Equipment qualification (EQ) source term, which may or may not be more limiting than the stated accident source term. Addressed in SRP Section 3.11, “Environmental Qualification of Mechanical and Electrical Equipment” and SRP Section 12.2 in developing source terms used to assess dose and dose rates to equipment. 5. Accident source term, which is based on Design Basis Events (DBE), is used to determine dose to the public and plant operators during a DBE. Addressed in SRP Chapter 15, “Transient and Accident Analysis.” As described below, this SRP section addresses the derivation and the use of the source terms described in Items 1 and 2 above. Other SRP sections may utilize parameters (i.e., letdown rate, removal efficiencies, and decontamination factors, etc.) described within SRP Chapter 11 as the basis for deriving the design bases for shielding and ventilation utilizing the source term described in Item 3. As a result, the information needed for the staff to conduct its evaluation will require the review of several PSAR/FSAR sections to confirm the relevance