Power plant battery replacement procedures

What is a lead-acid storage battery maintenance plan?

This document provides recommended maintenance, test schedules, and testing procedures that can be used to optimize the life and performance of permanently installed, vented lead-acid storage batteries used in standby service. It also provides guidance to determine when batteries should be replaced.

What is a Regulatory Guide for lead-acid storage batteries?

This regulatory guide describes methods and procedures that the staff of the U.S. Nuclear Regulatory Commission (NRC) considers acceptable for use in complying with the agency’s regulations with regard to the maintenance, testing, and replacement of vented lead-acid storage batteries in nuclear power plants.

What is a stationary lead-acid battery?

Stationary lead-acid batteries play an ever-increasing role in industry today by providing normal control and instrumentation power and back-up energy for emergencies. This recommended practice... Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications

When should a battery be replaced?

For example, the battery replacement criteria in IEEE Std 485-2010 are based on IEEE Std 450-2010, which recommends that the batteries be replaced when their actual performance reaches 80 percent of their rated performance.

When should battery performance testing be performed?

However, when modified performance test/service test results show that the battery has degraded or has reached 85 percent of its expected life with a capacity lower than 100 percent of the manufacturer’s rating, modified performance testing should be performed on an annual basis.