Document: NRC Regulatory Guide
Document ID: 43b9de94-a140-4f44-8c19-0129bc5e24b5
Document Type: regulatory_guide
Title: 02/1989
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740047.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.158
CFR Part: 
CFR Title: 

Content:
s regulations, the methods described herein will be used in the evaluation of the qualification of safety-related lead storage batteries for the following nuclear power plants: 1. Plants for which the construction permit is issued after February 28, 1989. 2. Plants for which the operating license application is docketed after August 28, 1989. 3. All operating nuclear power plants that replace batteries. 1.158-2 VALUE/IMPACT STATEMENT BACKGROUND Large lead storage batteries are used in nuclear power plants as a source of emergency power for vital instrumentation and control systems such as electrical distribution breaker controls for engineered safety features, inverters for the reactor protection instru ment channels, and certain other safety-related equipment. Since safety-related lead storage batteries must meet user specifications throughout the batter ies' installed life, the batteries undergo a program of qualification as part of an overall quality assurance program that also includes requirements for design, production, quality control, installation, maintenance, and periodic testing. This guide provides regulatory guidance for the qualification of safety-related lead storage batteries used in nuclear power plants. VALUE There is no published NRC document that de scribes methods acceptable to the NRC staff for quali fying safety-related lead storage batteries. As a conse quence, license reviews of safety-related lead storage batteries are being done on a case-by-case basis. IEEE Std 535-1979, "IEEE Standard for Qualifi cation of Class 1E Lead Storage Batteries for Nuclear Power Generating Stations," was published in Sep tember 1979. This standard needed several improve ments. Since then the staff has worked with IEEE in developing IEEE Std 535-1986, which is satisfactory and delineates an acceptable methodology for meet ing the Commission's regulations for qualification of safety-related lead storage batteries. Issuing a regula tory guide is consistent with