MIL-STD-1330 Precision Cleaning And Testing Of Shipboard Oxygen, Helium, Helium-Oxygen, Nitrogen, And Hydrogen SystemsThis 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-9290 or NAVSEA SS521-AA-MAN-010 will obtain procedure approval from the applicable certifying activity.

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MIL-STD-1330D(SH)

w/ Change 1

5.1.6.2  Class B.

a.    Clean undamaged coveralls or smocks, without buttons, exposed zippers, keys, and similar articles shall be worn by all personnel including visitors and observers.  Clothing should not be worn open or worn outside of the cleanroom or controlled area.

b.    Where dirt could be brought in from the outside, shoe covers shall be worn.

c.    Clean items shall only be handled with clean gloves such as latex, vinyl, or polyethylene which are free of lint and powder.  Gloves in contact with cleaning solvents or solutions shall be chemically resistant for personnel safety and to prevent spread of contamination to oxygen clean surfaces.  Oxygen clean surfaces touched with bare hands shall be considered contaminated.

d.    Special precautions shall be taken in the case of opened piping and components to prevent the introduction of loose articles such as buttons, jewelry, pens, coins, glasses, contact lenses, and hearing aids.  Badges, where required to be worn, shall be securely fastened to the clothing.

5.1.6.3  Class C.

a.    Clean undamaged clothing with firmly affixed buttons and zippers shall be worn by all personnel including visitors and observers.

b.    Tack mats or shoe covers shall be used if dirt could be brought in from the surrounding area.

c.    Clean items shall only be handled with clean gloves such as latex, vinyl, or polyethylene which are free of lint and powder.  Gloves in contact with cleaning solvents or solutions shall be chemically resistant for personnel safety and to prevent the spread of contamination to oxygen clean surfaces.  Oxygen clean surfaces touched with bare hands shall be considered contaminated.

d.    Special precautions shall be taken in the case of opened piping and components to prevent the introduction of loose articles such as buttons, jewelry, pens, coins, glasses, contact lenses, and hearing aids.  Badges, where required to be worn, shall be securely fastened to the clothing.

5.1.7  Tools and equipment.  Tools and equipment brought into a cleanroom or controlled area shall be free of visible soil and particulate.  Tools and equipment used in direct contact with oxygen clean surfaces shall be cleaned in accordance with this standard.  Where the configuration of the tool or equipment prevents cleaning in accordance with this standard such as micrometers and dial indicators, all exposed surfaces shall be wiped clean with an approved final cleaning solvent or solution and inspected as specified in 5.13.1 for visual cleanliness.

5.2  Aqueous component cleaning process.

5.2.1  Applicability.  This aqueous component cleaning process is applicable to items that can be fully immersed in the ultrasonic tank or parts washer specified in 5.2.3.  Large components such as flasks shall be cleaned as specified in 5.3 (see 6.3).

5.2.2  Objective.  The objective of the aqueous component cleaning process is to remove all visible soil and particulate during the pre-clean and rinse step as specified in 5.2.4 before proceeding to a final clean, verification,

and rinse step as specified in 5.2.5.  The objective of the final clean, verification, and rinse step is to apply an oxygen and life support safe cleaning agent to remove thin soil films and particulate that may remain after the pre-clean step

and to verify the required cleanliness.  An effective pre-clean step increases the probability of a successful final clean and verification step reducing overall process cost and time.

5.2.3  Material and equipment.

a.    A supply of rinse water and associated equipment such as sinks, spray nozzles, and ultrasonic tanks. b.    A supply of compatible pre-cleaner as specified in 4.3, 4.4, or 4.5 and associated equipment such as

brushes, sinks, spray nozzles, and ultrasonic tanks.

c.    A supply of NOC or TSP final cleaner as specified in 4.3 in an ultrasonic tank or a parts washer as specified in 5.2.3(f).

d.    A supply of nitrogen if used for drying.

e.    An oxygen clean facility as specified in 5.1.

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