Did you know that apparatus pumps and engines are only rated for altitudes up to 2,000 feet? At higher elevations, they may not have sufficient lift or power to pass either the pump acceptance test or the annual pump service tests unless action is taken when the apparatus is ordered.

The procedures for dealing with this problem are defined in NFPA 1901, Automotive Fire Apparatus. Departments ordering apparatus must first specify the desired performance and the altitude. For example, "pump shall supply 1,500gpm @ 150psi at altitudes up to 5,000 feet using the NFPA 1901 acceptance testing procedures for operations from draft."

In turn, apparatus manufacturers must determine the engine and pump ratings required to meet that performance and notify the customer of any changes to the specifications. For example, it may require a larger pump or engine.

If your operating area is above 2,000 feet elevation, be sure to discuss this situation with the manufacturer before ordering new apparatus.

About this feature
This feature offers a variety of short tips and facts about apparatus maintenance and testing. Look for it every month. Submissions of 150 words or less are welcome, subject to editing. Send them to Senior Editor Chris Cavette.