Based on the study through the analysis data of gas dissolved from oil once the paroxysmal failure happened to tow main transformer,the paper brings some opinion on judgment of transformer failure through the application of dissolved gas analysis.

The determination method of sudden breakdown of the safety accessories of liquefied gas tank car in operation is expounded; The causes to the breakdown are analyzed; And the emergency disposition measures are put forward.

The mechanism,features and diagnosis method of sudden vibration of turbo-generator rotor during its operation are described in this paper.

The present paper summarizes the experiences and methods in dealing with those motor vibration troubles in combination with the overall process of checking and repairing a main drive motor vibration trouble in the mill.

The reason, detriment, inspection and prevention of common vibration troubles of turning machinery have been presented in the paper, which can be taken as the reference for the people of equipment installing, operating or managing, etc.

Vibration Fault Analysis and Diagnosis for the Rotor System;

The complicated vibration fault of Unit 2 was eliminated successfully,which is of referential value to the treatment of vibration faults of similar units.

and explain how to diagnosis vibration fault with forward direction logic,the accuracy of fault diagnosis is improved.