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:
iate, to accommodate comments and to reflect new informa- tion and experience. Comments and suggestions for improvement will be considered and should be sent to the U.S. Nuclear Regulatory Commission, Office of Nuclear Reactor Regulation, Washington, D.C. c. Sufficient space has been provided to permit inspection, cleaning, maintenance, and repair of the system. d. A minimum of seven days' supply of fuel oil, for each redundant diesel generator system, has been provided onsite to meet the engineered safety feature load requirements following a loss of offsite power and a design basis accident. e. Adequate and acceptable sources of fuel oil are available, including the means of transporting and recharging the fuel storage tank, following a design basis accident (DBA) so as to enable each redundant diesel generator system to supply uninterrupted emergency power for as long as may be required. f. Seismic Category I structures housing the system protect it from natural phenomena and external missiles. 2. The PSB verifies that suitable precautions will be taken to prevent deleterious material from degrading the stored fuel and that periodic tests will be performed to verify that fuel degradation does not proceed to the point where engine performance is affected. 3. The PSB will determine the adequacy of the design, installation, inspec- tion, and testing of all electrical components required for reliable opera- tion of the system, including interlocks. In the review of the diesel engine fuel oil storage and transfer system, the PSB will coordinate other branch evaluations that interface with the overall review of the system as follows: Structural Engineering Branch (SEB) determines the acceptability of the design analyses, procedures, and criteria used to establish the ability of facility structures housing the system to withstand the effects of natural phenomena such as the safe shutdown earthquake (SSE), the probable maximum flood (PMF), and tornado missiles as part of