What standard addresses water tanks specifically for private fire protection?

The standard that addresses water tanks specifically for private fire protection is NFPA 22. This standard provides guidelines focused on the design, construction, installation, and maintenance of water tanks intended for fire protection, including criteria for capacity, materials, and operational requirements. NFPA 22 ensures that these water supply systems are adequate and reliable for fire-fighting purposes, which is essential for providing effective fire protection services to private entities.

In contrast, other standards such as NFPA 20 primarily focus on the installation of stationary pumps for fire protection, NFPA 25 outlines the inspection, testing, and maintenance requirements for water-based fire protection systems, and NFPA 13R is concerned with the installation of sprinkler systems in residential occupancies that are not high-rise buildings. While these standards address various elements of fire protection systems, NFPA 22 specifically targets the requirements and considerations for water tanks used in private fire protection, making it the most pertinent choice for the question.