Document: NUREG-0800
Document ID: 68c52f40-6536-4c97-a8ab-72ea2a8c1c8c
Document Type: srp
Title: TURBINE BYPASS SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070595.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.4
CFR Part: 
CFR Title: 

Content:
fied design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.30 IV. EVALUATION FINDINGS The reviewer determines that sufficient information has been provided and that the review supports conclusions of the following type, to be included in the staff's safety evaluation report: The turbine bypass system (TBS) includes all components and piping from the branch connection at the main steam system to the main condensers. The scope of review of the turbine bypass system for the ____________ plant included layout drawings, piping 31 and instrumentation diagrams, and descriptive information for the TBS and auxiliary supporting systems that are essential to its operation. The basis for acceptance of the TBS in our review was conformance of the designs, design criteria, and design bases to the Commission's regulations as set forth in General Design Criteria (GDC) 4 and 34 of Appendix A to 10 CFR Part 50. 1. The applicant has met the requirements of GDC 4, "Environmental and MissileDynamic Effects Design Bases," with respect to the system being 32 designed such that a safe shutdown will not be precluded as a result of the TBS failure. 2. The applicant has met the requirements of GDC 34, "Residual Heat Removal," with respect to the ability to use the turbine bypass system for shutting down the plant during normal operations. The turbine bypass system is designed such that sufficient steam can be bypassed to the main condenser so that the plant can be shutdown during normal operations without using the turbine generator. 3. If the TBS lines and other TBS components in BWR plants that do not incorporate an MSIVLCS are credited for fission product holdup and plateout, the applicant has met the guidance of SECY 93-087.33 The staff concludes that the design of the turbine bypass system conforms to all applicable GDCs, staff positions and industry standards and is therefore acceptable. For design certification reviews, the findings