Document: NUREG-0800
Document ID: cad7a703-c5bb-48ce-bbc4-d11359471665
Document Type: srp
Title: through 9.5.8 cover the review of various essential elements of the emergency
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350037.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.4
CFR Part: 
CFR Title: 

Content:
s, and floods. This meets the positions of Regulatory Guide 1.115, "Protection Against Low-Trajectory Turbine Missiles," Position C.1, and "Tornado Design Classification," Appendix Position 13. 2. The applicant has met the requirements of GDC 5, "Sharing of Structures, Systems, and Components," with respect to capability of shared systems and components important to safety to perform required safety functions. Each unit of the plant has its own emergency diesel generators whose EDEFSS is not shared between the diesel generators. 3. The applicant has met the requirements of GDC 17, "Electric Power Systems," with respect to the capability of the fuel oil system to meet independence and redundancy criteria. Each EDEFSS is independent and physically separated from the other system serving the redundant diesel generator. A single failure in any one of the two systems will affect only the associated diesel generator. This meets the positions of Regulatory Guide 1.9, "Selection, Design, and Qualification of Diesel Generator Units Used As Standby (Onsite) Electric Power Systems At Nuclear Power Plants," and Regulatory Guide 1.137, "Diesel Generator Fuel Oil Systems." The applicant has also met the positions of Branch Technical Position ICSB-17 (PSB), "Diesel Generator Protective Trip Circuit Bypasses," and NUREG/CR-0660, "Enhancement Of Onsite Emergency Diesel Generator Reliability." The applicant has met the requirements of the following industry standards: ANSI-N195 "Fuel Oil Systems for Standby Diesel Generators," IEEE-Standard 387 "IEEE Standard Criteria For Diesel Generator Units Applied As Standby Power Supplies For Nuclear Power Goverating Stations," and Diesel Engine Manufacturers Association (DEMA) Standard. The staff concludes that the design of the diesel fuel oil storage and transfer system conforms to all applicable GDC, positions of the regulatory guides cited, NUREG/CR-0660, staff positions, and industry standards, and is therefore acceptable. V.