MIL-STD-1330D(SH)
20 September 1996
1. SCOPE
1.1 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 SSS00-AG-MAN-010/P-9290 or NAVSEA SS521-AA-MAN-010 should obtain procedure approval from the applicable certifying activity.
1.2 Applicability. This standard is applicable to all surface ships, submarines, and supporting shore base facilities which contain any of the following:
1.2.1 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.
1.2.2 Hydrogen, nitrogen, and demineralized water systems and components that support gaseous or liquid oxygen generating equipment.
1.2.2.1 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.
1.2.2.2 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.
1.2.2.3 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.
1.2.2.4 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.
1.2.3 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.
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