Document ID:	A-A-59503       Scroll down to access document images

Overview

Title:  Nitrogen, Technical Scope:  This commercial item description (CID) covers two types of nitrogen: gaseous and liquid. Each type of nitrogen can be obtained in three different technical grades based primarily on nitrogen and oxygen content. Liquid nitrogen is used as a cooling agent for low temperature and cryogenic processes to shield temperature-sensitive materials and equipment from the effects of heat. Gaseous nitrogen is used to purge or pressurize systems or provide inert atmospheres. The list of intended uses includes, but is not limited to: pressurizing fuel tanks, hydraulic system accumulators, aircraft struts, rocket engine propellant systems, and carbon dioxide cylinders; purging aircraft oxygen converters; and purging and calibrating instruments. Since some systems are sensitive to oil contamination, gaseous nitrogen is divided into two classes: oil free and oil tolerant. Class 1, oil free nitrogen, is used for applications that cannot tolerate hydrocarbons, such as the purging of oxygen equipment. Class 2, oil tolerant nitrogen, is used for pressurizing oil-containing systems such as aircraft struts. Status:  Active Document Date:  04-JUN-2025         Next Review Due:  03-JUN-2030 FSC/Area:  6830 Doc Category:   Commercial Item Description (CID)

Responsibilities

Lead Standardization Activity:  GS  DLA Aviation - Richmond     Preparing Activity: GS3  DLA Aviation - Richmond DoD Interest Level:  / Prepared by DoD activity Coordination:  Full   Army Custodian:  AV   Combat Capabilities Development Command, Aviation and Missile Center   Navy Custodian:  SH   Naval Sea Systems Command (Ship Systems)   Air Force Custodian:  68   Air Force Petroleum Office (AFPET/PTP)   DLA Custodian:  GS   DLA Aviation - Richmond

Projects

Project Number:     6830-2025-001

Revision History

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