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: 

Content:
on, DC 20503; e-mail: oira_submission@omb.eop.gov. Public Protection Notification The NRC may not conduct or sponsor, and a person is not required to respond to, a collection of information unless the document requesting or requiring the collection displays a currently valid OMB control number. DG-1401, Page 5 B. DISCUSSION Reason for Revision The NRC issued RG 1.129, Revision 3, in September 2013, to endorse (with certain clarifying regulatory positions) IEEE Std. 450-2010 (Ref. 13). Since then, IEEE has revised the standard as IEEE Std. 450-2020 to provide clarifying guidance on maintenance, testing, and corrective actions. The revised IEEE standard also provides guidance for the condition monitoring of stationary batteries. The staff determined that the revised IEEE standard, subject to the conditions below, supports applications for new licenses, design certifications, standard design approvals, and license amendments. Background This RG provides guidance to manage vented lead-acid battery degradation such that a battery in service would retain its readiness for supporting design-basis events. It endorses, with certain clarifying regulatory positions, IEEE Std. 450-2020. The IEEE Power Engineering Society Energy Storage and Stationary Battery Committee developed this standard, and the IEEE Standards Association Standards Board approved it on December 3, 2020. IEEE Std. 450-2020 provides the recommended maintenance, test schedules, and testing procedures intended to optimize the life and performance of permanently installed vented lead-acid storage batteries used for standby power applications. It also provides guidance to determine when batteries should be replaced. IEEE Std. 450-2020 applies to full-float stationary applications in which a battery charger 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