Document: NUREG-0800
Document ID: 82c03523-2d2b-49d4-a06b-4def71350079
Document Type: srp
Title: EMERGENCY DIESEL ENGINE FUEL OIL STORAGE AND TRANSFER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070680388.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.4
CFR Part: 
CFR Title: 

Content:
of the site. 9.5.4-7 Revision 3 - March 2007 4. GDC 17 requires an onsite electric power system for the functioning of SSCs important to safety. GDC 17 requirements include sufficient independence and redundancy for the onsite electric power system to perform safety functions, assuming a single failure. RG 1.137 provides regulatory positions on the emergency diesel engine and fuel oil system design criteria and features subject to GDC 17 requirements, which provide assurance that electric power will be available for systems necessary (i) to prevent fuel damage in anticipated operational occurrences and (ii) to maintain core cooling and containment integrity in postulated accidents. 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. Plant-to-plant variations in the design of fuel oil storage and transfer systems occur due to the number of architect-engineering companies having design responsibility in this area. Differences may occur in the number of redundant systems, in piping interconnections between diesel engines, and in sharing requirements between units. The reviewer selects and emphasizes material from the following paragraphs to fit the particular design under review. 1. The SAR is reviewed to verify whether the EDEFSS description and related diagrams clearly indicate all modes of system operation, including the means for indicating, controlling, and monitoring fuel oil level, temperature, and pressure as required for uninterrupted operation. 2. The reviewer verifies whether the system is designed to withstand the effects of seismic events, other design bases,