Fire pumps are rated and tested according to which specifications?

Answer: B — National Fire Protection Association (NFPA)

Fire pumps are rated and tested according to NFPA standards, which set the formal criteria for how fire protection equipment must perform and be evaluated. The primary document governing stationary fire pumps is NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection. It specifies the procedures for installation, acceptance testing, and performance checks, ensuring the pump can deliver the required flow and pressure under expected fire conditions. This includes steps like pump run tests, verification of suction and discharge piping, checks on system pressures, and confirmation that the pump curve meets the design requirements. ANSI provides general national standards across many industries, but it is not the specific body that defines how fire pumps are rated and tested. UL is a safety certification laboratory that may certify components or assemblies, but the governing criteria for pump performance and testing come from NFPA standards. ISO offers international standards, which are broader and not the primary basis for fire pump ratings in typical fire protection practice.