Document: NRC Regulatory Guide
Document ID: 7ff7fac8-958f-48d8-82dd-0c18b1b6e487
Document Type: regulatory_guide
Title: Installation Design and Installation of Vented Lead-Acid Storage Batteries for Nuclear Power Plants + HISTORY – HISTORY 01/2024 – DG-1421 , Proposed Revision 3 10/2006 – DG-1154 , Proposed Revision 2 Prior to the issuance of DG-1154, RG 1.128 was entitled "Installation Design and Installation of Large Lead Storage Batteries for Nuclear Power Plants" (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2327/ML23277A276.pdf
Revision Date: 2024-01
Chapter: 
Section ID: RG-1.128
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CFR Title: 

Content:
t required to respond to, a collection of information unless the document requesting or requiring the collection displays a currently valid OMB control number. DG-1421, Page 5 B. DISCUSSION Reason for Revision This revision of the guide (Revision 3) endorses, with clarifications, IEEE Std. 484-2019 and applies to production and utilization facilities licensed under 10 CFR Part 50 and 10 CFR Part 52 within the scope of this RG. The previous version of this RG endorsed, with certain clarifications, IEEE Std. 484-2002 (Ref. 15). In 2019, the IEEE revised IEEE Std. 484 to add information on thermal factors of influence (exposure temperature, ambient temperature, temperature gradient, and rate of temperature change) and safety provisions (e.g., electrical hazards, shock hazards, ground fault hazards, arc flash hazards, chemical hazards), modifications to the personal protective equipment section, major changes to mounting and ventilation sections, new provisions on connection to direct current systems and spare cells, and new provisions for material handling and hazard assessment, as well as many other updates, corrections, and clarifications to various sections. The revised IEEE standard provides two new normative annexes. The NRC staff determined that, based on the revised IEEE standard, a revision to this RG is needed to support applications for new reactor licenses, design certifications, and license amendments. Background This RG provides guidance to applicants and licensees to meet regulatory requirements for the installation design and installation of vented lead-acid storage batteries in production and utilization facilities. IEEE Std. 484-2019 provides recommended design practices and procedures for storage, location, mounting, ventilation, instrumentation, preassembly, assembly, and charging of vented lead-acid batteries. IEEE Std. 484-2019 is an updated consensus standard that adds new recommendations and guidance, as well as informative annexes, for vented