MIL-STD-1622B(SH)
inspection results. Depending upon the application, the following would be considered as unacceptable potentially requiring corrective action as specified in 5.13.3. This list is for guidance only and does not include all items that may be encountered requiring corrective action.
(a)For critical applications and emergency breathing air, fluorescence under ultraviolet light or observable coatings attributed to other than approved lubricants. The procedure specified in 5.14.6 for detection of hydrocarbon contamination by swipe is useful in differentiating an approved non-flammable fluorinated lubricant from a flammable hydrocarbon lubricant.
(b)Large visible particles attributed to several causes such as failure of a valve seat, exposure to an uncontrolled atmosphere, inadequately filtered test gas, or corrosion of nearby components. If possible, particles should be collected and analyzed in order
to determine the source.
(c)Sea water contamination detected by:
(1) Salt deposits noted by visual inspection.
(2) Analysis of water effluent indicating a chloride level
greater than 50 ppm.
5.13.3 Corrective action. Contaminated systems shall be evaluated by local engineering for the need to reclean to the requirements specified herein. Consideration should be given to items such as the application, configuration, and potential hazards posed by the contamination. Loss of cleanliness in any critical system due to other than normal system use shall be noted (see 6.3) specifying corrective action. Corrective action options are as follows:
(a)Extensive organic contamination of any system can only be corrected using a chemical flush as specified in 5.6.
(b)Extensive particulate or sea water contamination of any system can be corrected using a hot or cold water flush as specified in 5.9.
(c)Organic contamination of a general application component can be removed as specified in 5.2 or by local cleaning as specified in
5.13.4.
(d)Organic contamination of a critical application component can be
removed as specified in 5.3 or by local cleaning as specified in
5.13.4. However, if removing hydrocarbon contamination by local
cleaning, in addition to the visual inspection requirements of
5.14.1.1, a swipe as specified in 5.14.6 shall be performed.
(e)Particulate contamination of a general application component can be
removed as specified in 5.3, 5.9.2, or by local cleaning as
specified in 5.13.4.
(f)Particulate contamination of a critical application component can
be removed as specified in 5.2, 5.9.2, or by local cleaning as
specified in 5.13.4.
5.13.4 Local cleaning. Clean using methods such as clean cloths, vacuuming, brushing, or any combination thereof. When large amounts of oil or grease, rust scale, or other foreign material is present, clean with a cloth wetted with warm (100 to 120oF) NOC or TSP or other cleaner as specified in
4.2 or 4.3, or, with local engineering approval, a NAVSEA approved halogenated solvent. Halogenated solvents are excellent for removing fluorinated greases. Remove aqueous cleaning solutions by wiping with a new cloth wetted with warm (100 to 120oF) grade C water for general applications or grade B water for critical applications. Dry the wetted surfaces with a clean cloth. This process shall be repeated until the parts pass the visual inspection as specified in 5.14.1.1. If necessary, use air or nitrogen to dry the surface.
5.14 Process verification methods.
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