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
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CFR Title: 

Content:
ncumbent on the user to verify the validity of the reference standards. Revision 2 of regulatory guide 1.137 is being issued to endorse portions of the updated industry consensus standards in ANSI/ANS 59.51-1997, and provide regulatory guidance on contemporary practices and related standards. Background Proper quantity and quality of fuel oil is necessary for reliable operation of the emergency diesel generators and gas turbine generators. Appendix C to ANSI/ANS-59.51-1997, “Recommended Fuel Oil Practices,” addresses recommended practices for maintaining fuel oil quantity and quality. Although not a mandatory part of the standard, the NRC staff believes Appendix C serves as an acceptable basis for a program to maintain the quality of fuel oil, with additions, deletions, and clarifications as contained in Section C, “Staff Regulatory Guidance” of this guide. The majority of the guidance provided herein relates to the reliability and availability of the fuel oil storage and transfer system and is equally applicable to both diesel engines and gas turbines. However, the required fuel oil quality of a gas turbine may differ somewhat from that of a diesel engine. The gas turbine manufacturer’s recommendations, as well as emission standards specific to gas turbines, should determine the requirements for gas turbine fuel quality. Regardless of the fuel quality provided for gas turbine performance and emissions, the level of fuel oil storage and transfer system reliability and availability should be maintained consistent with the guidance provided herein. Other Codes and Standards This regulatory guide endorses the use of one or more voluntary consensus codes or standards developed by external organizations. These codes or standards may contain references to other codes or standards. These references should be considered individually. If a referenced standard has been incorporated separately into NRC regulations, licensees and applicants must comply with that