NPFC - MIL-STD-1330
PRECISION CLEANING AND TESTING OF SHIPBOARD OXYGEN, HELIUM, HELIUM-OXYGEN, NITROGEN, AND HYDROGEN SYSTEMS
| Organization: | NPFC |
| Publication Date: | 28 June 2007 |
| Status: | active |
| Page Count: | 90 |
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.
Each activity will 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-9
Applicability.
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. An exception is the following diver life support equipment: diving helmets, masks, umbilicals, and items otherwise exempt by NAVSEA which are cleaned in accordance with MILSTD-1622, critical applications. For information, compressed air systems directly supporting oxygen generating equipment are cleaned in accordance with MIL-STD-1622, critical applications.
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. Nitrogen piping to the ship demineralized water storage tank is cleaned in accordance with MIL-STD-1622, general applications.
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, general applications.
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, general applications.
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 ship's 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, critical applications.
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 G63 and ASTM G94. 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 G63 and ASTM G94, 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).
intended Use:
This standard practice is for the precision cleaning and testing of naval surface ship, submarine and diving oxygen, oxygen enriched systems, and interfacing systems. The precision cleaning... View More
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