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Failure of Circulating Water Pumps Discharge Header Cross Connect Valve — Optimum Solutions

[+] Author Affiliations
Mohammed Alismail

Saudi Electricity Company, Dammam, Saudi Arabia

Paper No. POWER2014-32003, pp. V001T07A001; 3 pages
  • ASME 2014 Power Conference
  • Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues
  • Baltimore, Maryland, USA, July 28–31, 2014
  • Conference Sponsors: Power Division
  • ISBN: 978-0-7918-4608-7
  • Copyright © 2014 by ASME


The circulating water system is a very important system in Ghazlan Steam Power Plant- 4276 MW, as it supplies the sea water to the tubes side of the Condensers during normal operation. A large butterfly cross-connect valve was installed at the circulating water pumps discharge header to isolate the pumps and the header for maintenance. A forced unit shutdown occurred due to valve’s shafts end leakage and collapse after maintenance work. This paper explains the wrong design location of the valve in the piping as the root cause of the problem. Analysis with ASME reference will be presented. This paper will also present potential solutions and actions taken as a lesson learned to avoid occurrence in other plants.

Copyright © 2014 by ASME
Topics: Pumps , Valves , Failure , Water



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