Document: NRC Regulatory Guide
Document ID: dfb24267-98c5-442f-8325-3b1dee97bc46
Document Type: regulatory_guide
Title: Maintenance, Testing, and Replacement of Vented Lead-Acid Storage Batteries for Production and Utilization Facilities + HISTORY – HISTORY 08/2022 – DG-1401 , Proposed Revision 4 03/2013 – DG-1269 , Proposed Revision 3 10/2006 – DG-1155 , Proposed Revision 2 Prior to the issuance of DG-1155, RG 1.129 was entitled "Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Nuclear Power Plants" (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2202/ML22026A441.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.129
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CFR Title: 

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normally maintains the battery fully charged and supplies the direct current (DC) loads. However, specific applications, such as emergency lighting units, semiportable equipment, and alternate energy applications, may have other appropriate practices that are beyond the scope of the recommended practice. This standard does not include any other components of the DC system, and it does not require inspection and testing of the DC system even though the battery is part of that system. IEEE Std. 450-2020 is an updated consensus standard that adds new recommendations, as well as informative annexes, which reflect the current state of technology for vented lead-acid batteries. In addition, RG 1.128 relates to installation of vented lead-acid storage batteries, and RG 1.212 relates to sizing of large lead-acid storage batteries. Consideration of International Standards The International Atomic Energy Agency (IAEA) works with member states and other partners to promote the safe, secure, and peaceful use of nuclear technologies. The IAEA develops Safety Requirements and Safety Guides for protecting people and the environment from harmful effects of ionizing radiation. This system of safety fundamentals, safety requirements, safety guides, and other relevant reports, reflects an international perspective on what constitutes a high level of safety. To inform its development of this RG, the NRC considered IAEA Safety Requirements and Safety Guides pursuant to the Commission’s International Policy Statement (Ref. 14) and Management Directive and Handbook 6.6, “Regulatory Guides” (Ref. 15). The Staff also considered IAEA Specific Safety Guide (SSG) No. SSG-34, “Design of Electrical Power Systems for Nuclear Power Plants,” issued August 2016 (Ref. 16) in the development and update of this RG. DG-1401, Page 6 Documents Discussed in Staff Regulatory Guidance This RG endorses, in part, the use of one or more codes or standards developed by external organizations, and