In-Service Testing Schedule

In-Service testing schedule for Steam Turbine
2A - First 12 months' operation (new turbine)
Test (note 1)	Appearance Odour	Colour	TAN	Sludge	Particles	Viscosity
Frequency (Note 20	Daily or at least weekly	Monthly	Monthly	After 1 month 6 month 12 months	After 1 month 6 months 12 months	After 1 month 3 months 6 months 12 months
Oxidation stability	Water content	Rust test	Water separability	Foam test	Air release	Flash point
After 1 month 6 months 12 months	After 1 month 3 months 6 months 12 months	After 1 month 3 months 6 months 12 months	After 1 month 12 months	After 1 month 12 months	After 1 month 12 months	After 1 month 12 months

2 B - Normal Schedule (note 3)
Test (note 1)	Appearance Odour	Colour	TAN	Sludge	Particles	Viscosity
Frequency (note 2)	Daily or at least weekly	Quarterly	Quarterly	Yearly	Yearly	Yearly
Oxidation stability	Water Content	Rust test	Water separability	Foam test	Air release	Flash point
Yearly	Yearly	Yearly	Yearly	Yearly	Yearly	Yearly

Note :

If contamination is suspected, tests such as water separability, foam, air release, flash-point, may be useful to determine degree and effect or contaminants present. An outside laboratory or oil supplier can also assist in a more in depth analysis.
Frequency is based on continuous operation or total accumulated service time.
This schedule should be used as a guide. Increased frequency is required for a turbine where conditions are serve or for oils approaching the end of their service life. Most turbines should be covered by this schedule.

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