Risk Assessment for Gas Chlorination Units of Water and Wastewater Treatment with FMEA Method

Document Type : Research Paper

Authors

1 Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

2 Hirad industrial company

3 Head of Chlorination Office, Mashhad water and wastewater company. Mashhad. Iran

4 Head of R&D office, Mashhad water and wastewater company

5 Member of R&D office, Mashhad water and wastewater company

6 Member of Chlorination office, Mashhad water and wastewater company

Abstract

In the present paper, based on case study, risk measurement using failure mode effects analysis (FMEA1) methodology was performed in 4 chosen water and wastewater treatment plants in Mashhad. In this method, first the chlorination units were categorize to 6 classes including cylinders storage, chlorination room, gas cylinders, transportation of chlorine gas, joints of chlorination equipment, and educational systems of employee and management. The different potential modes of failures of these water and wastewater treatment units were listed and the severity rating, occurrence rating, and detectability rating were determined with interviewing the experts. According to these, risk priority number was calculated and the risk of mode of failure was prioritized in the parts of the water and water treatment plants. The results indicate that in general, the first priorities corresponded to the risks in terms of electrical and transportation; and using standard equipment and appropriate means of transport were suggested.

Keywords

References

 
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Journal of Water and Wastewater Science and Engineering
Volume 5, Issue 4
January 2021
Pages 31-40

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History

  • Receive Date: 27 February 2020
  • Revise Date: 10 August 2020
  • Accept Date: 10 August 2020

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