Document: NUREG-0800
Document ID: 45eeca5d-838e-41bb-9ab1-5681c845852e
Document Type: srp
Title: TURBINE GENERATOR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0703/ML070380204.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.2
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CFR Title: 

Content:
ts between the low-pressure turbine exhaust and the main condenser should prevent adverse effects on any safety-related equipment in the turbine room in the event of a rupture (it is preferable not to locate safety-related equipment in the turbine room). Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. Compliance with GDC 4 requires, in part, that SSCs important to safety are appropriately protected against dynamic effects, including missiles. GDC 4 applies to this SRP section because missiles resulting from a failure of the TGS can potentially cause a loss of function of safety-related structures or components, thus compromising the safety of the nuclear power plant. Specifically, turbine overspeed is a potential initiating event that could cause turbine blades to fail and become a source of missiles. Implementation of a turbine overspeed protection system serves to control turbine action under all operating conditions, thereby ensuring that a full-load turbine trip will not cause the turbine to overspeed beyond acceptable limits. Meeting this requirement provides assurance that missiles resulting from a TGS failure will not result in a loss of function of safety-related portions of the nuclear power plant. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. The NRC staff uses the procedures below during the construction permit review to determine whether the design criteria and bases and preliminary design in the preliminary safety