Document: NUREG-0800
Document ID: fb2c3684-8fec-4057-868d-a766b49899b7
Document Type: srp
Title: INTRODUCTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350113.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.0
CFR Part: 
CFR Title: 

Content:
Systems Branch provides assistance in evaluating the sequence of postulated events, protective and safeguards systems actuation and potential bypass modes, and manual control. ICSB determines whether reactor.protection and safeguards control and instru- mentation will function as assumed in the transient analysis with regard to manual or automatic actuation; remote sensing, indication, and control; and interlocks with auxiliary or shared systems. PSB determines the adequacy of onsite emergency power systems. The AEB review is concentrated on those more severe accidents that could result in the release of radioactive materials and could have significant radiological consequences involving the general public. AEB determines the potential doses resulting from the accidents and compares these doses to established dose criteria and guidelines. Based on the results of these analyses, AEB determines the adequacy of equipment designed to mitigate radio- logical consequences. In addition, radiological analyses are made to determine certain technical specification limits for safety-related equipment and structures. The ASB provides an evaluation of the auxiliary systems to confirm that these systems can supply all the functions required to support ECCS during and following a Desigrn Basic Accident (DBA), LOCA or any other primary system pipe break. CSB evaluates the functional capability of the containment and subcompartments for the spectrum of loss-of-coolant events under SRP Section 6.2.1. CSB, on request from the RSB, also provides an evaluation of containment pressure calculations utilized in the reflood portion of the ECCS performance analyses. MEB is responsible for the review of the effects of blowdown loads on core support structures and on control rod guide structures. MEB verifies that the core remains in place in case of a LOCA and that the control rods can be inserted. MEB is also responsible for evaluating the effects of blowdown loads including jet forces on