Study on the Dynamic Inspection for Decreasing the Losses and Costs Caused by Accidents of Fixed Equipment in Petrochemical Plants

Author:

Cong Guang Pei1,Gao Jin Ji2,Hou Bing3,Zhu Jing4,Zhang Bao Wei5

Affiliation:

1. Dalian University of Technology

2. Beijing University of Chemical and Technology

3. China University fo Petroleum

4. Shenyang University of Technology

5. China University of Petroleum

Abstract

The risk- and condition-based dynamic inspection proposed to decrease losses and costs caused by accidents which is not only a decision-making and optimal method for inspection strategies, but is also a soft measurement system for fixed equipment safety status. In the risk- and condition-based dynamic inspection method, data collection is standardized to decrease the impact of personal factors on the data. Moreover, a procedure in which experts approve the data collected from plants is supplemented to amend error and supplement omission of data in time. A relevant inspection strategy is adopted based on the different damage types and its initiation and growth for the aspect of inspection decision-making. In the meantime, the cost-risk efficiency of the inspection is regarded as an objective function to optimize inspection strategies according to the risk status of equipment. Finally, a model is established to assess the frequency of in-service inspection and ensure equipment safety during the end of equipment life based on the fitted linear relationship between the corrosion rate and stress energy.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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