Document: NUREG-0800
Document ID: 12f45e44-74bc-4a6b-933a-2fd6bc43c6dd
Document Type: srp
Title: deals with the fuel oil storage and transfer system for these diesel engines up to the engine
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070569.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.4
CFR Part: 
CFR Title: 

Content:
ado 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 systemsEDEFSS will affect only the associated diesel generator. 58 This meets the positions of Regulatory Guide 1.9, "Selection, Design, and Qualification, and Testing of Diesel Generator Units Used As Standby (Onsite)Class 1E Onsite Electric Power Systems At Nuclear Power Plants," and 59 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, 60 "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 61 387 "IEEE Standard Criteria For Diesel Generator Units Applied As Standby Power Supplies For Nuclear Power Generating 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. DRAFT Rev. 3 - April 1996 9.5.4-12 If the applicant proposes to designate an emergency diesel generator as the