Document: NRC Regulatory Guide
Document ID: e7cef6d0-2869-4d77-9a08-126120ae6043
Document Type: regulatory_guide
Title: Fuel Oil Systems for Emergency Power Supplies + HISTORY – HISTORY 06/2012 – DG-1282 , Proposed Revision 2 Prior to the issuance of DG-1282, RG 1.137 was entitled "Fuel –Oil Systems for Standby Diesel Generators (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1210/ML121090447.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.137
CFR Part: 
CFR Title: 

Content:
hout loss of capability to perform their safety functions. The design bases for these structures, systems, and components shall reflect: (1) Appropriate consideration of the most severe of the natural phenomena that have been historically reported for the site and surrounding area, with sufficient margin for the limited accuracy, quantity, and period of time in which the historical data have been accumulated, (2) appropriate combinations of the effects of normal and accident conditions with the effects of the natural phenomena and (3) the importance of the safety functions to be performed. 7. The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code, Section XI, “Rules for Inservice Inspection of Nuclear Power Plant Components” (Ref. 9), applies to fuel oil system components that are designed to ASME B&PV Code Section III. ASME “Code for Operation and Maintenance of Nuclear Power Plants” (ASME OM Code) (Ref. 10), applies to the inservice testing of certain pumps and valves of the fuel oil system as described in Section ISTA-1100, “Scope,” of the ASME OM Code. 8. Section 6.2.4 of ANSI/ANS-59.51-1997 requires that adequate heating be provided for the fuel oil system. Assurance should be provided that the fuel oil can be supplied and ignited at all times under the most severe environmental conditions expected at the facility. The guidance provided in the American Society for Testing and Materials (ASTM) D975-11, “Standard Specification for Diesel Fuel Oils” (Ref. 11), Table 1, “Detailed Requirements for Diesel Fuel Oils”, Note J, should be applied, as needed, to ensure that reliable diesel generator and gas turbine generator operation and performance are maintained during low ambient temperature conditions. 9. Section 6.2.5, “Other Requirements,” of ANSI/ANS-59.51-1997 states, in part, that “…protection shall be provided as required against external and internal corrosion, such as by coatings or cathodic