The turbine oil of unit no.3 in one power plant had been seriously deteriorated only after three months in operation.For this

oil quality analysis and rotary oxygen bomb test have been carried out.The results show that the main causes leading to oil deterioration are very poor oxidation resistant capability of the new oil and the residual products of deterioration in the system after replacement of new oil

resulting in decrease of fragmenting emolsion capability of the newly replaced oil.For this

after oil treatment in operation by using QZZ-6 turbine oil regeneration equipment

the bad influence of residual organic ester and oil sludge in the oil system upon the oil quality has been thoroughly eliminated.It is recommended that the rotary oxygen bomb test should be carried out during acceptance of new oil in power plant

taking the rotary bomb value greater than 300 min as the acceptance standard

ensuring the oxidation resistant performance of new oil to meet the requirements.