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:
diesel generator, whichever is longer. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. GDC 2 requires that SSCs important to safety be designed to withstand the effects of natural phenomena like earthquakes, tornadoes, hurricanes, floods, tsunami, and seiches without loss of capability to perform safety functions. The EDEFSS safety function is to store quality fuel and transfer it to the emergency diesel engine following an engine start signal. Compliance with GDC 2 requirements ensures that natural phenomena will not affect EDEFSS capability to supply fuel oil to the emergency diesel engines. 2. GDC 4 requires that SSCs important to safety be designed to withstand the dynamic effects of pipe ruptures like pipe whip and jet impingement and externally- or internally-generated missiles. The EDEFSS safety function is to store quality fuel and transfer it to the emergency diesel engine following an engine start signal. Compliance with GDC 4 provides assurance that the dynamic effects of equipment failures and events external to the plant will not affect EDEFSS capability to supply fuel to the emergency diesel engines. 3. GDC 5 prohibits the sharing of SSCs important to safety among nuclear power units unless such sharing can be demonstrated not to impair their ability to perform safety functions, including in the event of an accident in one unit an orderly shutdown and cooldown of the remaining unit. The EDEFSS safety function is to store quality fuel and transfer the fuel to the emergency diesel engine following an engine start signal. Compliance with GDC 5 provides assurance that EDEFSS failures in one unit will not affect other units 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