Inadequate cleaning of components used in oxygen systems can result in the ignition of contaminants or components by a variety of mechanisms such as hostile particle, mechanical or pneumatic impact. Adequate contamination control in oxygen systems is imperative to minimize hazards, avoid components failures and possible accidents.
Polycontrols ffers an oxygen-cleaning service. Our dedicated installations and our c ontrolled cleaning operational procedures are in accordance with standard practice for cleaning methods and cleanliness levels ASTM G 93, Verification Type I, Test 1 through 4.
Cleaning for oxygen service includes:
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Disassembly of instruments to prevent contaminants’ deposit in places difficult to reach (only when construction allows it)
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Ultrasonic cleaning to eliminate all fine particles that could have adhered on surfaces
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Special solvent cleaning in order to reach the appropriate level of cleanliness
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Nitrogen purging in order to assure all solvents’ elimination
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White light inspection to detect contaminants larger than 50 μm.
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Ultraviolet light inspection to detect greases and oils which are not detectable with white light
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Reassembly of instruments
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Helium leak test
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Special packaging and identification in accordance with the ASTM specifications