scope:

This standard encompasses the design and performance requirements for diesel engines used in fire pump service that are designed and installed in accordance with FM Global Property Loss Prevention Data Sheets.

This Standard does not address National or Local Codes which require specific emission levels to be met by stationary diesel engine installations.

Accessories such as a Variable Speed Pressure Limiting Control System may be examined within the scope of this Approval Standard.

This standard encompasses mechanical speed controller (governor style), in addition to electronic fuel management systems.

This standard encompasses diesel engines that are normally aspirated, turbocharged, twin turbocharged, and those fitted with aftercoolers.

This standard encompasses diesel engines with liquid cooling or open air cooling.

This standard encompasses diesel engines with operating speeds at or below 3600 rpm. Typical engine speeds are: 1000, 1200, 1450, 1760, 1800, 2100, 2350, 2400, 2600, 2800, 3000, and 3600 rpm.

Newly developed accessories will be examined on a case-by-case basis.

Purpose

This standard states Approval criteria for diesel engines used to drive fire pumps that supply water to fire protection systems. These diesel engines must have an extended service life, throughout which they must be capable of operating reliably at rated power and speeds during emergency fire incidents, despite being idle for extended periods.

Approval criteria include, but are not limited to, performance requirements, marking requirements, examination of manufacturing facility(ies), audit of quality assurance procedures, and a surveillance audit program.

Approval standards are intended to verify that the product described shall meet stated conditions of performance, safety, and quality useful to the ends of property conservation.