This Recommended Practice provides recommended design practices and procedures for storage, location, mounting, ventilation, instrumentation, preassembly, assembly, and charging of large lead storage batteries. Required safety practices are also included. This Recommended Practice applies particularly to installations at generating stations, including nuclear, and large substations. The portions of this Recommended Practice that will specifically relate to personnel and nuclear plant safety are mandatory and are designated by the word shall; all other portions are recommended practices and are designated by the word should. Battery sizing, maintenance, capacity testing, charging equipment, dry charged cells, and consideration of other types of batteries are beyond the scope of this Recommended Practice.