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:
Systems” (Ref. 15), contains more specific information concerning both external coatings and cathodic protection. This information may be useful to applicants and licensees. Section 5 of SP0169-2007 contains a list of acceptable types of external coatings and the standards to which these coatings should comply. With the exception of installations where it can be demonstrated that external corrosion control is not required (paragraphs 1.2.1-1.2.3 and section 3), paragraph 4.2.1 states, in part, that “External corrosion control must be a primary consideration during the design of a piping system. Materials selection and coatings are the first line of defense against external corrosion. Because perfect coatings are not feasible, CP must be used in conjunction with coatings.” 9.3. When provided, cathodic protection systems should be designed, operated, maintained and tested in accordance with NACE SP0169-2007. 10. Section 6.2.5 of ANSI/ANS-59.51-1997 includes requirements for fire protection for the diesel generator fuel oil system. The requirements of Section 6.2.5 are not considered a part of this regulatory guide since this subject is addressed separately in more detail in other NRC documents. Thus a commitment to follow this regulatory guide does not imply a commitment to follow the requirements of Section 6.2.5 concerning fire protection. Fire protection for the fuel oil systems for diesel generators and gas turbine generators should be provided in accordance with Regulatory Guide 1.189, “Fire Protection for Nuclear Power Plants” (Ref. 16) and meet the requirements of Appendix R of 10 CFR Part 50. 11. Section 6.3.3, “Instrumentation and Controls,” of ANSI/ANS-59.51-1997 provides requirements for controls, instrumentation and alarms. The system should include sufficient instrumentation and alarms, both in the main plant control room and at each diesel generator or gas turbine generator local control panel, to permit operators to adequately monitor the