Document: NUREG-0800
Document ID: feb81401-32fe-404e-84da-ff4b36e788bf
Document Type: srp
Title: RADIOLOGICAL CONSEQUENCES OF MAIN STEAM LINE FAILURE OUTSIDE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350151.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.6.4
CFR Part: 
CFR Title: 

Content:
CONTAINMENT (BWR) REVIEW RESPONSIBILITIES Primary - Accident Evaluation Branch (AEB) Secondary - Reactor Systems Branch (RSB) I. AREAS OF REVIEW The purpose of the review is to calculate the whole body and thyroid doses result- ing from a postulated failure of a main steam line outside containment of a BWR facility, and to assure that radioactive releases due to the failure are ade- quately limited by the technical specifications on primary coolant activity. The review includes two cases for the reactor coolant iodine concentration: (1) with a preaccident iodine spike, and (2) with the maximum equilibrium concentration for continued full power operation. A secondary review is performed by the Reactor Systems Branch (RSB). The amount of potential fuel failure resulting from the postulated main steam line break (MSLB) accident is routinely evaluated by RSB and the result provided to the AEB for consideration in the evaluation of the MSLB radiological consequences. The review of the applicable technical specifications is coordinated with and per- formed by the Licensing Guidance Branch as part of its primary review responsibil- ity for SRP Section 16.0. The acceptance criteria necessary for the review and the method of.application are contained in SRP Section 16.0. II. ACCEPTANCE CRITERIA The acceptance criteria are based on the requirements of 10 CFR Part 100 as related to the radiological consequences of an accident. The plant site and the dose mitigating engineered safety features (ESF) are acceptable with respect to the radiological consequences of a postulated MSLB outside containment of a BWR facility if the calculated whole body and thyroid doses at the exclusion area and the low population zone boundaries do not exceed the-following exposure guidelines: Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and