scope:

This standard provides the requirements for precision cleaning and testing of oxygen or oxygen-enriched systems and components; oxygen generating plants including nitrogen, hydrogen, and demineralized water support systems and components; and helium, helium-oxygen, and hydrogen life support systems and components. Compressed air systems directly supporting oxygen generating equipment are cleaned in accordance with MIL-STD-1622. Each activity should implement the applicable requirements of this document through a locally prepared and approved procedure. Activities subject to additional quality assurance requirements such as NAVSEA SS800-AG-MAN-010/P-9290 or NAVSEA SS521-AA-MAN-010 should obtain procedure approval from the applicable certifying activity.

This standard is applicable to all surface ships, Submarines, and supporting shore base facilities which contain any of the following:

Oxygen or oxygen-enriched systems and components, including gaseous and liquid oxygen generating equipment. The cleanliness boundary includes all material wetted by any fluid containing greater than 25 percent by volume oxygen during normal operations.

Hydrogen, nitrogen, and demineralized water systems and components that support gaseous or liquid oxygen generating equipment.

The cleanliness boundary for hydrogen systems supporting oxygen generating equipment encompasses all wetted material from, and including, the point of interface or interface connection with an oxygen or oxygen-enriched system or component to the first check valve or normally shut isolation valve. Remaining portions of hydrogen systems should be cleaned using best commercial practice to remove loose scale, dust, grit, filings, oil, and grease.

The cleanliness boundary for submarine nitrogen systems supporting oxygen generating equipment encompasses all wetted material from, and including, the point of interface or interface connection with an oxygen or oxygen-enriched system or component upstream to either:

(a) The nitrogen supply flasks, including all piping and components associated with charging when such supply is dedicated to oxygen generating equipment.

(b) The last check valve or normally shut isolation valve that separates the nitrogen supply flasks from the oxygen generator when such supply is not dedicated to oxygen generating equipment. Remaining portions of the nitrogen system are cleaned in accordance with MIL-STD-1622.

The cleanliness boundary for surface ship nitrogen systems includes any portion of the system that can be used to pressurize or purge the oxygen system, oxygen system components, oxygen-nitrogen producer, and storage equipment. Remaining portions of the nitrogen systems are cleaned in accordance with MIL-STD-1622.

The cleanliness boundary for demineralized water systems supporting oxygen generating equipment encompasses all wetted material from, and including, the point of interface or interface connection with an oxygen or oxygen-enriched system or component to the ships demineralizer.

Helium, helium-oxygen, and hydrogen systems and components that provide life support. The cleanliness boundary encompasses all wetted material providing life support functions except the following: diving helmets, masks, umbilicals and items otherwise exempted by NAVSEA which are cleaned in accordance with MIL-STD-1622.

Equipment which comes in contact with or is used to transfer any fluid from its source to a system or component within any of the boundaries defined in 1.2.1, 1.2.2, and 1.2.3 when such interface is intended to maintain the cleanliness requirements specified herein.

Open ended applications constructed of material that is configured and operated at a pressure that represents a fire hazard in the presence of an oxygen or oxygen-enriched atmosphere when determined in accordance with the guidelines of ASTM G 63 and ASTM G 94. For open-ended piping or configurations constructed of material and operated in an oxygen or oxygen-enriched atmosphere at a pressure that does not propagate a flame when determined in accordance with the guidelines of ASTM G 63 and ASTM G 94, clean in accordance with MIL-STD-1622 for diver applications; otherwise use best commercial practice to remove loose scale, dust, grit, filings, oil, and grease. For information, copper, copper-nickel, bronze, brass, and monel will not propagate a flame in an oxygen or oxygen enriched atmosphere at pressures up to 7500 pounds per square inch (lb/in²).

This appendix is a mandatory part of the standard. The information contained herein is intended for compliance. This appendix provides results of compatibility testing and direction for performing additional testing.

This appendix is a mandatory part of the standard. The information contained herein is intended for compliance. This appendix provides a procedure for determination of non-volatile residue (NVR) in the Navy oxygen cleaner (NOC) by gravimetric analysis. The residue could consist of any insoluble low vapor pressure material in the NOC including particulate, gels, and inorganic as well as organic residues which are retained by a Teflon membrane filter of pore diameter 0.45 micrometer.

This appendix is a mandatory part of the standard. The information contained herein is intended for compliance. This appendix provides a procedure for solvent extraction of inorganic aqueous Navy oxygen cleaner (NOC) or tri-sodium phosphate (TSP) cleaning solution. The solvent extract is subsequently analyzed for hydrocarbon oil and grease or non-volatile residue.

This appendix is a mandatory part of the standard. The information contained herein is intended for compliance. This appendix provides a procedure for determining hydrocarbon oil and grease in dichloropentafluoropropane (HCFC-225s) solvent extract by Fourier transform infrared (FTIR) spectrophotometric analysis. This procedure is based on ASTM D 3921.

This appendix is a mandatory part of the standard. The information contained herein is intended for compliance. This appendix identifies the NAVSEA approved halogenated solvents, and specifies information regarding safe and effective use.

intended Use: