problem z obiektem flash

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10. Most dangerous solid contaminants in operated lubricating systems.

The most dangerous solid contaminants occurring in operated oil systems include:

• Fly ash, dust and coal dust,
• Metal chips, cuts and any residues after polishing and other repair works,
• Cinders (welding leftovers), burrs,
• Glass, sand and small mechanical contaminations, oxidising products and material formed in the process of wearing machine parts,

The 16/13 purity class acc. to ISO 4406 is recommended for oil systems and oils systems in turbines. The statistics performed demonstrate that oil with lower purity class deteriorates the availability of the entire turbine set and is a reason for over a half of forced downtimes during start-up. These observations clearly indicate the adverse impact of contaminants. The problem becomes even more radical when starting up a turbine set after repair, by extending considerably the turbine set start-up time. It is contrary to the basic goal of each repair. Each longer timeout is an excellent opportunity for cleaning and preparing an oil system for failure-free work.

There are many oil system cleaning technologies. Note, however, that clean oil is not an ultimate solution by itself, since an uncleaned oil system may contaminate it again.